Micro Application Example
Automatic Transfer switch
with LOGO! and SENTRON circuit breaker
Micro Automation Set 29
Table of contents
Micro Automation Set 29 Beitrags-ID 27074055
Note
The Micro Automation Sets are not binding and do not claim to be complete
regarding the circuits shown, equipping and any eventuality. The Micro
Automation Sets do not represent customer-specific solutions. They are only
intended to provide support for typical applications. You are responsible for
ensuring that the described products are correctly used. These Micro
Automation Sets do not relieve you of the responsibility of safely and
professionally using, installing, operating and servicing equipment. When using
these Micro Automation Sets, you recognize that Siemens cannot be made
liable for any damage/claims beyond the liability clause described.
We reserve the right to make changes to these Micro Automation Sets at any
time without prior notice. If there are any deviations between the
recommendations provided in these Micro Automation Sets and other Siemens
publications  e.g. catalogs  the contents of the other documents have priority.
Warranty, Liability and Support
We accept no liability for information contained in this document.
Any claims against us  based on whatever legal reason  resulting from the
use of the examples, information, programs, engineering and performance data
etc., described in this Micro Automation Set shall be excluded. Such an
exclusion shall not apply in the case of mandatory liability, e.g. under the
German Product Liability Act ( Produkthaftungsgesetz ), in case of intent, gross
negligence, or injury of life, body or health, guarantee for the quality of a
product, fraudulent concealment of a deficiency or breach of a condition which
goes to the root of the contract ( wesentliche Vertragspflichten ). However,
claims arising from a breach of a condition which goes to the root of the contract
shall be limited to the foreseeable damage which is intrinsic to the contract,
unless caused by intent or gross negligence or based on mandatory liability for
injury of life, body or health. The above provisions do not imply a change in the
burden of proof to your detriment.
Copyright� 2007 Siemens A&D. It is not permissible to transfer or copy
these Micro Automation Sets or excerpts of them without first having prior
authorization from Siemens A&D in writing.
V01.00 05.11.2007 2/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Table of contents
Micro Automation Set 29 Beitrags-ID 27074055
Foreword
Micro Automation Sets are fully functional and tested automation
configurations based on A&D standard products for simple, fast and
inexpensive implementation of automation tasks for small-scale
automation. Each of the available Micro Automatic Sets covers a frequently
occurring subtask of a typical customer problem in the low-end
performance level.
The sets help you obtain answers with regard to required products and the
question how they function when combined.
However, depending on the system requirements, a variety of other
components (e.g. other CPUs, power supplies, etc.) can be used to
implement the functionality on which this set is based. Please refer to the
respective SIEMENS A&D catalogs for these components.
The Micro Automation Sets are also available by clicking the following link:
http://www.siemens.en/microset
V01.00 05.11.2007 3/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Table of contents
Micro Automation Set 29 Beitrags-ID 27074055
Table of contents
Table of contents.......................................................................................................... 4
1 Fields of Application and Benefits................................................................ 6
1.1 Automation Task............................................................................................... 6
1.2 Automation solution Set 29............................................................................... 7
1.3 Application Areas.............................................................................................. 8
1.4 Benefits............................................................................................................. 8
2 Wiring diagrams.............................................................................................. 9
2.1 Wiring plan: Uninterruptible power supply with battery and change-over
contactor of the supply mains. ..................................................................... 9
2.2 Wiring plan: LOGO! Basic with expansion module DM8 and digital monitoring
relay ........................................................................................................... 10
2.3 Wiring plan: Circuit breaker ............................................................................ 11
3 Hardware and Software Components......................................................... 12
3.1 Transfer switch ............................................................................................... 12
4 Function Principle ........................................................................................ 14
4.1 Circuit breaker with motor drive ...................................................................... 14
4.2 SIRIUS Monitoring relay ................................................................................. 16
4.3 SITOP UPS..................................................................................................... 17
4.4 Transfer switch process in automatic operation.............................................. 18
4.5 Service functions ............................................................................................ 22
4.6 Overview on the operator functions ................................................................ 23
4.7 Depictions on the display of the LOGO! logic module .................................... 25
4.8 Load shedding ................................................................................................ 26
5 Configuring the Startup Software ............................................................... 27
5.1 Preliminary remark.......................................................................................... 27
5.2 Downloading the startup code ........................................................................ 27
5.3 Configuring Components ................................................................................ 27
5.3.1 Installing and wiring hardware ........................................................................ 28
5.3.2 Power supply and emergency power supply .................................................. 29
5.4 Preparations ................................................................................................... 30
6 Live-Demo ..................................................................................................... 32
6.1 Overview of all scenarios................................................................................ 32
6.1.1 Scenario 1: AUT  short time grid failure....................................................... 33
6.1.2 Scenario 2: AUT - Grid failure without procedure error when generator is
requested ................................................................................................... 34
6.1.3 Scenario 3: AUT - Grid failure with procedure error when generator is
requested ................................................................................................... 37
6.1.4 Scenario 4: AUT - Grid failure with subsequent grid return during generator
request ....................................................................................................... 41
V01.00 05.11.2007 4/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Table of contents
Micro Automation Set 29 Beitrags-ID 27074055
6.1.5 Scenario 5: MAN  Manual mode circuit breaker NET ................................... 43
6.1.6 Scenario 6: MAN  Manual mode circuit breaker GEN................................... 44
6.1.7 Scenario 8: SERVICE  Service operation..................................................... 45
7 Technical data............................................................................................... 47
7.1 SITOP ............................................................................................................. 47
7.2 LOGO! ............................................................................................................ 47
7.3 SENTRON ...................................................................................................... 48
7.4 SIRIUS............................................................................................................ 48
7.5 Instruction and display devices....................................................................... 49
V01.00 05.11.2007 5/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Fields of Application and Benefits
Micro Automation Set 29 Beitrags-ID 27074055
1 Fields of Application and Benefits
1.1 Automation Task
On the event of a power failure in a shopping center the emergency lights and
other devices important to maintain the infrastructure are to be powered by a
generator.
A monitoring sensor is to be used to monitor the availability of the current network.
If it detects a power failure, a control unit requests power from the generator.
If a further monitoring sensor informs the control unit about the availability of the
generator current, it should trigger the network-circuit breaker to cut the main circuit
of the shopping center from the public grid.
After the power was cut from the public grid, the emergency power network of the
shopping center is to be connected to the generator.
This state is to be maintained until the first monitoring sensor signalizes that the
public grid is available again. As a result the control unit should then cut the circuit
breaker responsible for the emergency power supply from the emergency power
network of the shopping center.
After a successful disconnection from the emergency power network, the control
unit should switch the network circuit breaker on in order to supply the shopping
center with current from the public grid again. If this procedure is finished, the
control unit informs the generator to stop operation.
In order to guarantee a constant availability of the generator, its functionality has to
be checked once a month. To do so, the control unit should be able to switch the
network circuit breaker on/off in the manual mode using push buttons.
A mechanical interlock avoids the two circuit breakers being switched on at the
same time.
Figure 1-1
Generator
Shopping center
Control
Controlunit
unit
"
V01.00 05.11.2007 6/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Fields of Application and Benefits
Micro Automation Set 29 Beitrags-ID 27074055
1.2 Automation solution Set 29
One circuit breaker of the type VL 160N connects the public grid to the main circuit
and one connects it to the emergency power system of the shopping center,
respectively.
Using the SIRIUS monitoring relay the availability of the three phases of the public
grid and of the emergency power system is monitored.
The LOGO! logic module disconnects the circuit breaker from the public grid if the
SIRIUS monitoring relay detects a phase error or a failure. It then triggers the
generator to switch on.
If the availability of the generator grid is confirmed by the SIRIUS monitoring relay,
the LOGO logic module cuts the circuit breaker to the generator grid.
If the SIRIUS monitoring relay signalizes that the public grid is available again, a
switch-back to the public grid and the switching off of the generator is triggered by
the LOGO! logic module.
The SITOP DC-UPS-MODULE ensures that the LOGO! logic module can operate
while switching between public grid and generator grid is carried out.
For maintenance purposes a knob switch is used to switch between automatic and
manual mode. Using a further knob switch, the circuit breaker on the one hand to
the public grid or on the other hand to the generator grid can be selected. Using a
push button it can be switched on or off.
Figure 1-2
Grid
Generator
1 2
G
4
3
1
D C 24V
13NO 21NC 31NC 21NC A1+
0
I II
5 s
10
7 8 9 11 4
0
6 I II
14NO 22NC 32NC 44NO A2-
Circuit breaker VL160 (Grid) 2 Circuit breaker VL160 (Generator) 3 SITOP Power supply
1
SITOP UPS DC24V SITOP Batt. module SIRIUS Contactor 7 LOGO! Logic module
4 5 6
Buttons
LOGO! Expansion module Knob switch SIRIUS Grid monitoring relay
8 9 10 11
V01.00 05.11.2007 7/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Fields of Application and Benefits
Micro Automation Set 29 Beitrags-ID 27074055
1.3 Application Areas
Industry
" Production lines for continuous production (foundries, chemical
processes, etc.)
" Engine rooms on ships
" Important additional equipment for thermal power plants
Infrastructure
" Docks and railway systems
" Airport lighting
" Monitoring systems for military bases
Building technologies
" Operating rooms in hospitals
" Safety devices for high-rise buildings
" Computer rooms (banks, insurance companies, etc.)
" Lighting systems for shopping centers
1.4 Benefits
" The automatic transfer switch ensures a continuous power supply in
case of a power failure.
" The continuous grid monitoring is performed by the SIRIUS 3UG4
monitoring relay. The transfer operation is reliably controlled by the
LOGO! logic module
" The high demand of the transfer switch is implemented by the motor
driven SENTRON circuit-breakers.
" Safety  provided by the continuous power supply in case of a power
failure.
" Saving of time  by the automatic transfer switch in case of a power
failure and by the automatic resetting on the power return, service
engineers do not have to intervene.
" Optimum power management  by the option of power shedding when
switching to emergency power supply.
V01.00 05.11.2007 8/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Wiring diagrams
Micro Automation Set 29 Beitrags-ID 27074055
2 Wiring diagrams
2.1 Wiring plan: Uninterruptible power supply with battery and
change-over contactor of the supply mains
Figure 2-1
L1
L2
L3
N
PE
L1
L2
L3
N
PE
A5\K14
Sitop UPS
Sitop Smart
21 13 31 43 A1
A1
A2
R3
1
L+ M
22 14 32 44 A2
R1\L1(4)
R2\L1(4)
R1\N(1)
A3
R1\N(1)
X1.1
X1.2
X1.3
X1.4
X1.5
X1.6
Sitop battery
L+ M X1.7
X1.8
L+
M
The LOGO! Logic module is powered by an uninterruptible power supply
(UPS) (see  A1 and  A2 in figure 2-1). While switching from grid to
generator and vice versa the battery buffers the LOGO! logic module.
The change-over contactor "R3 connects the phase  L1 and the zero
conductor, depending on the availability of the generator between public
grid and generator grid, with the power supply  A1 and with the servo
motor of the circuit-breaker. As soon as the generator grid is available the
relay switches from the public grid to the generator grid.
V01.00 05.11.2007 9/49
Grid
Generator
SI 7.5A
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Wiring diagrams
Micro Automation Set 29 Beitrags-ID 27074055
2.2 Wiring plan: LOGO! Basic with expansion module DM8 and
digital monitoring relay
Figure 2-2
L+
Serv
Auto
Man M
S5 S1.S1 S1.S2
S1 S2
�1 �2
S2.S1
S1
Knob switch
S2.S2
0
Net
Gen
S4
S1 S2
�1 �2
S3
S2
L1 L2 L3 L1 L2 L3
L1 N I1 I2 I3 �4 I5 I6 I7 I8 L1 N I1 I2 I3 �4
On
A4 A5
A6 A7
4 3
S3
12 11 14 12 11 14
Off
Q11Q12 Q21Q22Q31Q32Q41Q42 Q11Q12 Q21Q22Q31Q32Q41Q42
2 1 22 21 24 22 21 24
Buttons
R3\A1
S4
Ack
4 3
S5
The transfer switch is controlled by a LOGO! logic module  A1 and by an
expansion module DM8  A2 . The SIRIUS monitoring relay monitors the
availability of the public grid or of the generator grid, respectively. Both
monitoring relays transmit the state via a digital signal to the LOGO! logic
module.
The knob switch  S1 is responsible for selecting the operation mode. Using
this switch the operation modes  automatic and  manual can be selected.
If the  manual mode is selected, the knob switch  S2 is used to address
the circuit-breaker either to the public grid or to the generator grid. The
push button  S3 is then used to switch the selected circuit-breaker on, the
push button  S4 is used to switch it off again..
An error triggered by exceeding the timeout counter for instance, has to be
acknowledged by the push button  S5 .
V01.00 05.11.2007 10/49
Monitoring relay
Logic module
Monitoring relay
Logic module
24V DC
SIRIUS
SIRIUS
LOGO!
LOGO!
DM 8
Gen:L2
Gen:L1
Gen:L3
Grid:L1
Grid:L2
Grid:L3
Manual Grid
Manual Gen
Off
On
Auto Mode
R2\HS.X2.4 (closed)
AC K
R1\AS.X2.6 (triggered)
R1\HS.X2.4 (closed)
R2\AS.X2.6 (triggered)
R1\SA:1.\X1.1
R2\S2B
R2\SA:1.X1.1
R3\14 (Gen)
R3\22 (Netz)
R1\HS.X2.1
R2\HS.X2.1
Start:Gen\A12\I0.7
R1\S2B
A2 \X2.9
A2 \X2.10
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Wiring diagrams
Micro Automation Set 29 Beitrags-ID 27074055
2.3 Wiring plan: Circuit breaker
Figure 2-3
L1
L2
L3
N
PE
L1
L2
L3
N
PE
1 3 5 1 3 5
L+ 24V A6\Q12 L+ 24V A6\Q42
AS.X2.5 SA:1(X1.1) AS.X2.5 SA:1(X1.1)
HS.X2.3 HS.X2.3
A6\Q22 A7\Q22
HS.X2.1 HS.X2.1
R2\S2A R1\S2A
HS.X2.2 HS.X2.2
A6\I7 M 24V A6\I8 M 24V
HS.X2.4 SA:2(X1.2) HS.X2.4 SA:2(X1.2)
A6\I3 A6\I4
AS.X2.6 AS.X2.6
2 4 6 2 4 6
R1 R2
PE(X20.5) PE(X20.5)
R3\K32 R3\K32
L2-(X20.1) L2-(X20.1)
R2\HS.X2.2 R1\HS.X2.2
S2A(X20.2) S2A(X20.2)
Legend:
A7\Q32 A6\Q32
SA = Circuit switch
S2B(X20.3) S2B(X20.3)
HS = auxiliary switch
R3\K22 AS = alarm switch R3\K22
L2+(X20.4) L2+(X20.4)
The circuit breakers are operated via the LOGO! logic module. In order to
avoid both circuit breakers to be switched on at the same time, the digital
activation command has been looped to the circuit breaker  R1 ( R2 )
using an auxiliary contact to the circuit breaker  R2 ( R1 ).
The servo motors of the circuit breakers are powered analogically to the
UPS via the currently available grid using the change-over contactor  R3 .
This enables both circuit breakers to be controllable even in the case of a
power failure in one of the grids.
V01.00 05.11.2007 11/49
Grid
Generator
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Hardware and Software Components
Micro Automation Set 29 Beitrags-ID 27074055
3 Hardware and Software Components
3.1 Transfer switch
Products
Table 3-1
Component No. MLFB/Order number Note
LOGO! logic module 1 6ED1052-1MD00-0BA5
(12/24RC)
LOGO! DM8 24R 1 6ED1055-1HB00-0BA0
EXPANSION MODULE
SENTRON circuit breaker 2 3VL2705-1DC33-8CD1
VL 160N
Motorized operating 2 3VL9300-3MQ00
mechanism with spring
energy store
SIRIUS monitoring relay 2 3UG4617-1CR20
3UG4
SITOP SMART, closed-loop 1 6EP1333-2BA01
controlled load power supply
unit
SITOP DC UPS MODULE 1 6EP1931-2DC42
24V/6A
SITOP battery model 24V / 1 6EP1935-6MC01
1.2 AH
SIRIUS contactor relay 1 3RH1122-1BB40
RC element 1 3RT1916-1CB00
Selector switch 2 3SB3210-2DA11
knob, I-0-II, latching
Push button green, 1NO 1 3SB3202-0AA41
Pushbutton yellow, 1NO 1 3SB3202-0AA31
Push button red, 1NC 1 3SB3203-0AA21
V01.00 05.11.2007 12/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Hardware and Software Components
Micro Automation Set 29 Beitrags-ID 27074055
Accessories
Table 3-2
Component No. MLFB/Order number Note
LOGO! PC cable 1 6ED1057-1AA00-0BA0
Configuration software/tools
Table 3-3
Component No. MLFB/Order number Note
LOGO! SOFT COMFORT V5.0 1 6ED1058-0BA01-0YA0
SP5, SINGLE LICENSE
Accessories for Live-Demo
Table 3-4
Component No. MLFB/Order number Note
Automatic cut-out 2 5SX2316-5
" 3-pin
" 16A
Lamp for connection to 2
AC 230V
V01.00 05.11.2007 13/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Function Principle
Micro Automation Set 29 Beitrags-ID 27074055
4 Function Principle
4.1 Circuit breaker with motor drive
Overview
The circuit breaker comprises a 3-phase switch which connects the grid to
the load.
Figure 4-1
Motorized operating
mechanism with spring
energy store
1 3 5
Auxiliary switch
 NC
Auxiliary switch
 NO
Shunt trip
Alarms switch
Main switch
 NO 2 4 6
In the present case the circuit breaker comprises the following components:
Table 4-1
No. Component Note
1. Circuit breaker unit
2. Motorized operating The motorized operating mechanism with spring
mechanism with spring energy store is mounted on the circuit breaker
energy store and is used to open and to close it. It has a
manual and an automatic mode. The mode can
be selected using the slider on the motor drive.
3. Shunt trip This additional module is placed in the right-
hand slot of the circuit breaker. The relay of the
shunt trip can be accessed by the LOGO! Logic
module, for instance. If the current flow of the
V01.00 05.11.2007 14/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Function Principle
Micro Automation Set 29 Beitrags-ID 27074055
No. Component Note
shunt trip is interrupted, the triggering
mechanism of the circuit breaker is activated
and it takes the position  triggered .
4. Auxiliary switch This installation set comprises a NC and a NO.
The position of the auxiliary switches represents
the state of the circuit breaker.
" The NO-state provides the LOGO! logic
module with the current position of the
circuit breaker.
" The NC is used for locking purposes in
order to ensure both circuit breakers not to
be switched on at the same time.
5. Alarm switch This installation set comprises a NO. If this
alarm switch is closed it sends a signal to the
LOGO! logic module saying that the circuit
breaker has taken the switch position
 triggered .
The 3 states of the circuit breaker
The circuit breaker can be in 3 different positions
Table 4-2
No. Switch position
1. Closed In this position the contacts of the circuit breaker
are closed The load is connected to the grid and
the current can flow.
2. Open In this position the contacts of the circuit breaker
are open. The load is disconnected from the grid
and the current cannot flow.
3. Triggered In this position the contacts of the circuit breaker
are open. The switch position  triggered can be
attained either with a mechanism directly activated
on the circuit breaker, or it is triggered via an
optional module (e.g. shunt trip).
After the circuit breaker was brought into the
 triggered switch position, it cannot immediately
be switched on again. In order to switch the circuit
breaker on again, in other words to close it, it first
of all has to be opened. This is to avoid the circuit
breaker to be switched on after an error (e.g.
short-circuit after in public mains) without having
corrected the error.
V01.00 05.11.2007 15/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Function Principle
Micro Automation Set 29 Beitrags-ID 27074055
4.2 SIRIUS Monitoring relay
The monitoring relay 3UG4617 monitors the phase sequence and a phase
failure of one of the phases. It furthermore monitors if a set voltage is
undershoot or exceeded and if a set asymmetry value is exceeded and it
monitors the difference between the highest and lowest phase voltage in
relation to the highest phase voltage (Ux-y max - Ux-y min) / Ux-y max in a
3-phase grid.
If the correct phase sequence at the terminals L1-L2-L3 is applied, the relay
A4 or A5 picks up. This is depicted on the display with a relay symbol. In
case of an incorrect phase sequence the relay will not pick up. In this case
no error message will occur on the display but the relay symbol will not
show up! If the monitored voltage (Ux-y) is higher then the specified lower
voltage value (U|) and lower then the specified higher voltage value (Ux),
meaning within the voltage limits, and if the grid voltage (Asy) is lower then
the specified value, the relay A4 or A5 (contact 11-12-14) will pick up
approx. 50ms after the reaction of A4 or A5, respectively. For the
3UG4617 the display shows the current voltage between lines L1 and L2.
The following grid faults are depicted on the display as diagnosis message
with flashing symbols:
" Failure of one phase (3UG4618 or failure of the zero conductor).
Symmetric (all 3 phase voltages / star voltages at the same time)
" Asymmetric (only one phase voltage / star voltage) undershoot or
exceeding of the voltages specified in the menu. Exceeding the
asymmetry specified in the menu.
In case of a phase failure the relay A4 or A5 will immediately be released.
In case of the errors voltage undershoot, voltage exceed or asymmetry
exceed the relay A4 or A5 will be released after the specified fault display
relay time (Del).
V01.00 05.11.2007 16/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Function Principle
Micro Automation Set 29 Beitrags-ID 27074055
4.3 SITOP UPS
Function
In combination with the SITOP battery modules the DC-UPS-module 6 is
used to buffer parts of the load current (max. 6A) of 24V-load current
supplies of the SITOP series.
The loads to be buffered are powered by the voltage of input using the
outputs  Output L+ and  Output M of the DC-UPS module. If the 24V
DC-supply voltage fails or if the voltage drops below the specified cut-in
threshold, the loads are powered by switching on the battery module which
is kept in full charge in stand-by parallel operation.
Adjustable parameters
Figure 4-2
+2V Zuschaltschwelle
+1V (cut-in threshold)
+0,5V +22V fest eingestellt (fixed)
+1V
+1V
Ladeschlussspannung
+0,5V
(end-of-charge voltage)
+0,2V
+ 26,3V fest eingestellt (fixed)
+0,2V
+0,1V
0,2A / 0,4A Ladestrom (charging current)
eingestellte Zeit / max. Zeit (set time / max.)
+320s
+160s
Pufferzeit
+ 80s
(buffering time)
+ 40s
+ 20s
+ 10s +5s fest eingestellt (fixed)
Unterbrechung output (disconnection)
Betriebszustand Akku On / Off
(operating state battery)
According to the DIP-switches depicted in figure 4-2 the following
parameters can be adjusted:
" Battery cut-in threshold
" End-of-charge voltage
" Charging current
" Buffering time
V01.00 05.11.2007 17/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Function Principle
Micro Automation Set 29 Beitrags-ID 27074055
Cut-in threshold
If the input voltage drops below the specified value of the cut-in threshold,
the UPS-module will switch to backup power operation. The loads are then
only powered by the battery module.
End-of-charge voltage
The end-of-charge voltage depends on the type of the battery used and of
the temperature the battery is exposed to. For detailed information on the
adjustment please refer to the manual.
Charging current
The battery module is charged with constant current until the specified end-
of-charge voltage is reached. The charging process is then stopped.
Buffering time
The buffering time can be set in 10 second steps from 5 seconds to 635
seconds. Using switch 1 (specified time/maximum time) you can select if
the backup power operation is stopped when the specified time is reached
or when the exceed discharge threshold of the battery (= maximum
buffering time) is reached.
4.4 Transfer switch process in automatic operation
Status diagram
The status diagram shows the behavior of the control program in automatic
mode. T*.* are the switch-over conditions that have to be fulfilled in order to
get from one phase P* to the next one.
V01.00 05.11.2007 18/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Function Principle
Micro Automation Set 29 Beitrags-ID 27074055
Figure 4-3
P0
T0.1
P1 start, Auto
T1.1
error-
Grid is
acknowledgeme
available
nt
T4.1
T1.1
T4.2
T2.2
T1.2
T6.1
P6
P5 P4
P3
T3.2
Switch to Net
error switch Gen
switch Net
and Gen
recognized to Net
T5 triggered
to Gen
T3.1 T2.2
T0.2
P2
T2.1
Gen is
available
Table 4-3
Name of condition Condition
1.
" Public grid is available
T0.1
" Grid-circuit breaker closed
" Generator-circuit breaker open
2.
" Grid failed
T0.2
" Grid-circuit breaker open
" Generator-circuit breaker closed
3.
" Public grid failed
T1.1
4.
" Grid-circuit breaker in  triggered
T1.2
" Generator not available
5.
" Public grid is available again
T2.1
6.
" Generator-circuit breaker in  triggered
T2.2
" Public grid not available
7.
" Switching operation from  public grid to
T3.1
 generator grid successfully carried out
8.
" Switching operation from  public grid to
T3.2
 generator grid could not be carried out
within monitoring time
9.
" Switching operation from  generator to
T4.1
 public grid successfully carried out
V01.00 05.11.2007 19/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Function Principle
Micro Automation Set 29 Beitrags-ID 27074055
Name of condition Condition
10.
" Switching operation from  generator to
T4.2
 public grid could not be carried out within
monitoring time
11.
" At least one error pending
T5
12.
" All errors acknowledged
T6.1
" All errors corrected
Switching from public grid to generator grid
The switching process is based on the status diagram from figure 4-1. The
application is in state  P1 and has the following basic conditions:
" Selector switch for operation mode  S1 :  Automatic
" Circuit breaker switch  S2 :  0
" Public grid connected to load
" Generator is switched off
" Locking switch of both circuit breakers is in  auto position
Switching into state  P3 is effected, if the SIRIUS monitoring relay  A4
sends a message to the LOGO! logic module stating that the public grid
has failed for at least 10 seconds. The LOGO! logic module then switches
the grid circuit breaker  R1 to the state  triggered and, in doing so,
interrupts the connection between load and public grid. An inquiry in form of
a digital signal is simultaneously sent to the generator. If the SIRIUS
monitoring relay  A5 transmits the information on the availability of the
generator grid to the LOGO! logic module  A6 the generator circuit breaker
 R2 switches from  triggered to  open (motor loads the spring force
storage device). Then the circuit breaker  R2 is closed (spring force
storage device is unload). Now a connection between generator grid and
partial load (loads for emergency light, lifts, etc.) is established.
After the successful switch to the generator grid the state  P2 is attained.
Here the SITOP DC-UPS-MODULE  A2 ensures that the LOGO! logic
module  A6 is supplied with power even during the switching process from
public grid to generator grid.
If the switching process could not be carried out during the monitoring time
of 30 seconds, error state  P5 is attained. This situation is depicted on the
display with an error message. For safety reasons the LOGO! logic module
 A6 switches both circuit breakers  R1 and  R2 to the state  triggered .
This means that the load is disconnected from the public and from the
generator grid. State  P6 is attained.
V01.00 05.11.2007 20/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Function Principle
Micro Automation Set 29 Beitrags-ID 27074055
Switch back from generator grid to public grid
The switching process is based on the status diagram from figure 4-1. The
application is in state  P2 and has the following basic conditions:
" Selector switch for operation mode  S1 :  Automatic
" Circuit breaker switch  S2 :  0
" Public grid is disconnected from load
" Generator is switched on and connected to partial load
" Locking switch of both circuit breakers is in  auto position
Switching into state  P4 is effected if the SIRIUS monitoring relay  A4
sends a message to the LOGO! logic module stating that the public grid
has returned for at least 10 seconds. The LOGO! logic module then
switches the generator circuit breaker  R2 to the state  triggered and, in
doing so, interrupts the connection between partial load and generator grid.
After successful disconnection the LOGO! logic module effects a state
change of the grid circuit breaker  R1 from  triggered to  open (motor
loads spring force storage device). Then the circuit breaker  R1 is closed
(spring force storage device is unload). Now the connection between the
public grid and the load is re-established.
After the successful switch to the public grid state  P1 is attained again.
Here the SITOP DC-UPS-MODULE  A2 ensures that the LOGO! logic
module  A6 is supplied with power even during the switching process from
public grid to generator grid.
If the switching process could not be carried out during the monitoring time
of 30 seconds, error state  P5 is attained. This situation is depicted on the
display with an error message. For safety reasons the LOGO! logic module
 A6 switches both circuit breakers  R1 and  R2 to the state  triggered .
This means that the load is disconnected from the public and from the
generator grid. State  P6 is attained.
V01.00 05.11.2007 21/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Function Principle
Micro Automation Set 29 Beitrags-ID 27074055
4.5 Service functions
Manual control of the circuit breakers via application buttons
For maintenance purposes both circuit breakers can manually be opened
or closed. To do so the following settings have to be carried out.
" Operation mode switch  S1  Manual
" Circuit breaker switch  S2 :  Public grid or  Generator
The closing of the circuit breaker is effected by pushing the green push
button  S3 , if the spring of the motor has been tensioned in advance. If the
spring has not been tensioned, the circuit breaker remains in  triggered
state, meaning no connection between load and power supply is
established.
The opening of the circuit breaker selected and the winding up of the
tension spring is carried out after the red button  S4 was pushed.
Service with onboard-control elements of the circuit breaker
If the selector switch is set to the  Off -position, all outputs of the LOGO!
logic module are switched to  0 .
For the purpose of a function test of the circuit breaker it can also be
directly controlled via the control elements.
" In order to ensure that the LOGO! Logic module does not carry out
changes in the control outputs while the onboard service, the operation
mode switch  S1 has to be set to  0
" The locking switch of the circuit breaker has to be set to  manual
according to figure 4-7
Pushing the red onboard button  ON effects the closing of the circuit
breaker if the spring was tensed before. If the spring is untensed, the circuit
breaker remains in the  triggered state.
Pushing the black onboard button  OFF effects the opening of the circuit
breakers and the tensing of the spring.
Note
After the service operation has been finished the locking switch of the
circuit breaker has to be reset to  auto again.
Do not use this function if the public grid and the generator grid are
!
both available at the same time, as the circuit breakers do not
DANGER interlock each other when switched on. If both grids are connected
to the load at the same time, a short-circuit can occur!
V01.00 05.11.2007 22/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Function Principle
Micro Automation Set 29 Beitrags-ID 27074055
4.6 Overview on the operator functions
Control elements
Figure 4-4
Serv Man Netz 0 CLOSE
Auto Gen
S3
ACK S1 S2
S5
OPEN
S4
Table 4-4
No. Switch Function
1. S1 Operation mode selector switch for selecting the
operation modes automatic and manual
2. S2 Circuit breaker selector switch for selecting the circuit
breaker
3. S3 Push button for manual closing of the selected circuit
breaker in manual mode
4. S4 Push button for manual opening of the selected circuit
breaker in manual mode
5. S5 Push button for acknowledging an error message in
automatic mode
Automatic mode
Figure 4-5
Funktion Betriebsart Wahlleistungsschalter Taster
Service
0
Automatik Manuell
S1 �ff. Netz Generator
S2
Automatikbetrieb
V01.00 05.11.2007 23/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Function Principle
Micro Automation Set 29 Beitrags-ID 27074055
Manual switch on/off of circuit breaker
Figure 4-6
Function Mode Circuit breaker selector switch Button
Service 0
Manual
Automatic Manual Public S2 Generator
S1
S3
Switch public grid
grid
on
Service 0
Manual
Automatic Manual Public S2 Generator
S1
Switch public grid
S4
grid
off
Service 0
Manual
Automatic Manual Public Generator
S1 S2
S3
Switch generator
grid
grid on
Service
0
Manual
Automatic Manual
S1 Public Generator
S2
Switch generator S4
grid
grid off
Acknowledgement of errors
Figure 4-7
Function Bet rieb sart Wahlleistung sschalt er Tast er
Service
Automatic Manual
S1
S4
Fehler quittieren
V01.00 05.11.2007 24/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Function Principle
Micro Automation Set 29 Beitrags-ID 27074055
Service functions via the onboard-control elements of the circuit breaker
Figure 4-8
Circuit breaker selector switch
Function Operation mode Button
Service 0
Service mode
Public grid Generator
Automatic Manual S2
S1
Open circuit breaker Close circuit breaker
Manual Selector switch to
Spring tension lever  manual
Spring tensed Spring untensed
4.7 Depictions on the display of the LOGO! logic module
Status display
Figure 4-9
Betriebsart: Automatik Manuell oder Service
0: Keine Spannung am �ffentlichen Netz oder Generator
1: Spannung am �ffentlichen Netz oder Generator
0: Leistungsschalter �ffentliches Netz offen
1: Leistungsschalter �ffentliches Netz geschlossen
0: Leistungsschalter Generator offen
1: Leistungsschalter Generator geschlossen
V01.00 05.11.2007 25/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Function Principle
Micro Automation Set 29 Beitrags-ID 27074055
Display of the switching process
Figure 4-10
Switching process from phase P1 to P2 is running
Switching process from phase P2 to P1 is running
Error message in case of time violation
Figure 4-11
Fehlermeldung nach Zeit�berschreitung beim
Umschalten von Generator zum �ffentlichen
Netz
4.8 Load shedding
Load shedding means, in contrast to operation on the public grid, the load
on the generator has to be limited to a minimum. Such partial loads
comprise for instance the emergency lights, lifts, and other emergency
systems.
V01.00 05.11.2007 26/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Configuring the Startup Software
Micro Automation Set 29 Beitrags-ID 27074055
5 Configuring the Startup Software
5.1 Preliminary remark
For the startup we offer you software examples with test code and test
parameters as download. The software examples support you during the
first steps and tests with your Micro Automation Sets. They enable quick
testing of hardware and software interfaces between the products
described in the Micro Automation Sets.
The software examples are always assigned to the components used in the
set and show their basic interaction. However, they are not real applications
in the sense of technological problem solving with definable properties.
5.2 Downloading the startup code
The software examples are available on the HTML page from which you
downloaded this document.
Table 5-1
Nr. File name Content
1 Set_29_LOGO!_code.lsc LOGO! Soft Comfort project
file for transfer switch
5.3 Configuring Components
Note
It is assumed here that the necessary software has been installed on
your computer and that you are familiar with handling the software.
V01.00 05.11.2007 27/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Configuring the Startup Software
Micro Automation Set 29 Beitrags-ID 27074055
5.3.1 Installing and wiring hardware
Table 5-2
No. Instructions Note
6. Install the single components onto a
control panel
7. For wiring purposes lay channel ducts
8. Wire the set as explained in chapter 2
L1
L2
L3
9. For the wiring of the UPS to the battery
N
PE
L1
L2
and change-over contactor of the supply
L3
N
PE
A5\K14
mains please refer chapter 2.1 Sitop Smart Sitop UPS
21 13 31 43 A1
A1
A2
R3
1
22 14 32 44 A2 L+ M
R1\L1(4)
R2\L1(4)
R1\N(1)
A3
R1\N(1)
X1.1
X1.2
X1.3
X1.4
X1.5
X1.6
Sitop battery
L+ M X1.7
X1.8
L+
M
chapter 2.1
L+
Serv
Auto
10. For the wiring of LOGO! Basic to the Man M
S5 S1.S1 S1.S2
S1 S2
�1 �2
expansion module DM8 and to the digital
S2.S1
S1
Knob switch
S2.S2
monitoring relay please refer to chapter Net 0
Gen
S4
S1 S2
�1 �2
2.2
S3
S2
L1 L2 L3 L1 L2 L3
L1 N I1 I2 I3 �4 I5 I6 I7 I8 L1 N I1 I2 I3 �4
On
A4 A5
A6 A7
4 3
S3
12 11 14 12 11 14
Off
Q11Q12 Q21Q22Q31Q32Q41Q42 Q11Q12 Q21Q22Q31Q32Q41Q42
2 1 22 21 24 22 21 24
Button
R3\A1
S4
Ack
4 3
S5
chapter 2.2
L1
L2
L3
N
11. For the wiring diagram of the circuit PE
L1
L2
L3
N
PE
breakers please refer to chapter 2.3
1 3 5 1 3 5
L+ 24V A6\Q12 L+ 24V A6\Q42
AS.X2.5 SA:1(X1.1) AS.X2.5 SA:1(X1.1)
HS.X2.3 HS.X2.3
A6\Q22 A7\Q22
HS.X2.1 HS.X2.1
R2\S2A R1\S2A
HS.X2.2 HS.X2.2
A6\I7 M 24V A6\I8 M 24V
HS.X2.4 SA:2(X1.2) HS.X2.4 SA:2(X1.2)
A6\I3 A6\I4
AS.X2.6 AS.X2.6
2 4 6 2 4 6
R1 R2
PE(X20.5) PE(X20.5)
R3\K32 R3\K32
L2-(X20.1) L2-(X20.1)
R2\HS.X2.2 R1\HS.X2.2
S2A(X20.2) S2A(X20.2)
Legend:
A7\Q32 A6\Q32
S2B(X20.3) SA = Circuit switch S2B(X20.3)
HS = Auxiliary switch
R3\K22 AS = Alarm switch R3\K22
L2+(X20.4) L2+(X20.4)
chapter 2.3
V01.00 05.11.2007 28/49
Grid
Generator
Logic module
Logic module
Monitoring
Monitoring
24V DC
SIRIUS
SIRIUS
LOGO!
LOGO!
relay
relay
DM 8
Grid
Generator
SI 7.5A
Gen:L3
Gen:L1
Gen:L2
Netz:L3
Netz:L1
Netz:L2
Manual Net
Manual Gen
R2\HS.X2.4 (closed)
Off
On
Auto Mode
R1\AS.X2.6 (triggered)
ACK
R1\HS.X2.4 (closed)
R2\AS.X2.6 (triggered)
Set29_DocTech_v1d3_en.doc
R1\SA:1.\X1.1
R2\S2B
R2\SA:1.X1.1
R3\14 (Gen)
R1\HS.X2.1
R3\22 (Netz)
R2\HS.X2.1
Start:Gen\A12\I0.7
R1\S2B
A2\ X 2 .9
A2\X2.10
Copyright
�
Siemens AG 2007 All rights reserved
Configuring the Startup Software
Micro Automation Set 29 Beitrags-ID 27074055
No. Instructions Note
12. First of all set all DIL-switches of the UPS
+2V Zuschaltschwelle
+1V (cut-in threshold)
to OFF +0,5V +22V fest eingestellt (fixed)
+1V
+1V
Ladeschlussspannung
+0,5V
(end-of-charge voltage)
+0,2V
+ 26,3V fest eingestellt (fixed)
+0,2V
+0,1V
0,2A / 0,4A Ladestrom (charging current)
eingestellte Zeit / max. Zeit (set time / max.)
+320s
+160s
Pufferzeit
+ 80s
(buffering time)
+ 40s
+ 20s
+ 10s +5s fest eingestellt (fixed)
Unterbrechung output (disconnection)
Betriebszustand Akku On / Off
(operating state battery)
chapter 4.3
13. On the bottom DIL-switch of the UPS the Now the buffering time is limited to 10
DIL-switches 1-5 have to be set ON minutes. An unwanted discharge of the
battery is now avoided.
14. On the bottom DIL-switch of the UPS the
DIL-switch 9 has to be set ON
5.3.2 Power supply and emergency power supply
Table 5-3
No. Instructions Note
15. In this set the power supply and the
emergency power supply are carried out
by the same source. Wire the automatic
400V
cut-out as depicted in the example.
NET
GEN
V01.00 05.11.2007 29/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Configuring the Startup Software
Micro Automation Set 29 Beitrags-ID 27074055
5.4 Preparations
" Supply is to be carried out by the public grid
Table 5-4
Nr. Instructions Note
1. Make sure the 400 volt supply is still
disconnected.
2. Make sure both circuit breakers are in
 automatic mode.
NET / GEN
3. Make sure that the flat fuse of the battery
is installed.
CLOSE
4. Switch knob switch  S1 to  service mode
Serv Man Netz 0
Auto Gen S3
and knob switch  S2 to  0 . S1 S2
ACK
In this mode LOGO! Is disabled and no
S5
OPEN
unwanted actions will occur.
S4
5. Switch the automatic cut-out  ON for the
grid and  OFF for the generator.
NET GEN
6. Switch the 400 volt supply on. The main circuit is available.
The input of the SITOP power supply is
supplied with 220 volt.
The SITOP supplies the LOGO! with 24
volt via the UPS.
The LOGO! runs up.
Now you are in  service operation .
7. Switch to "automatic" operation mode CLOSE
Serv Man Netz 0
using the knob switch "S1". Auto Gen
S3
S1 S2
ACK
S5
OPEN
S4
V01.00 05.11.2007 30/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Configuring the Startup Software
Micro Automation Set 29 Beitrags-ID 27074055
Nr. Instructions Note
8. The LOGO! is now in normal operation,
meaning in mains operation with closed
circuit breaker for the mains circuit.
Supply is now carried out via the public
grid.
V01.00 05.11.2007 31/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Live-Demo
Micro Automation Set 29 Beitrags-ID 27074055
6 Live-Demo
The functions and features of the Micro Automation Set are displayed in
form of an example application for better understanding.
If the components have been correctly configured as described in the
previous chapters, the program code can be tested.
6.1 Overview of all scenarios
Table 6-1
Mode Scenario Note
AUT Short time grid failure Without generator request
AUT Grid failure without procedure error Without generator start-up error
when generator is requested
AUT Grid failure with procedure error With generator start-up error
when generator is requested
AUT Grid failure with subsequent grid Grid return during generator request
return during generator request
MAN Manual mode circuit breaker NET CB NET
MAN Manual mode circuit breaker GEN CB GEN
SERVICE Service operation CB NET / CB GEN
V01.00 05.11.2007 32/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Live-Demo
Micro Automation Set 29 Beitrags-ID 27074055
6.1.1 Scenario 1: AUT  short time grid failure
" Automatic mode
" Supply is now carried out via the public grid.
" Public grid has short time grid failure ( < 3sec )
Table 6-2
No. Instructions Note
1. Supply is now carried out via the public
grid.
2. Switch the automatic cut-out  OFF for the
NET GEN
public grid.
< 3sec
3. The public grid drops and a voltage dip
monitoring (here 3 secs) is effected in the
LOGO!
< 3sec
4. Switch the automatic cut-out for the public
NET GEN
grid  ON within the line monitoring time.
< 3sec
5. The public grid returns and, due to the
short time of the voltage dip, no switch to
 emergency power operation is effected.
V01.00 05.11.2007 33/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Live-Demo
Micro Automation Set 29 Beitrags-ID 27074055
6.1.2 Scenario 2: AUT - Grid failure without procedure error when generator
is requested
" Automatic mode
" Supply is now carried out via the public grid.
" Public grid fails for longer period of time
" Generator is now responsible for the task of the public grid
" The public grid returns
Table 6-3
No. Instructions Note
1. Supply is now carried out via the public
grid.
2. Switch the automatic cut-out  OFF for the
NET GEN
public grid.
3. The public grid drops and a voltage dip
monitoring (here 3 secs) is effected in the
LOGO!
> 3sec
4. If the voltage dip monitoring is exceeded,
the switching process to  emergency
power operation is effected in the LOGO!
and is processed as follows:
The generator for the  emergency power
grid is requested.
A monitoring time for the generator return
is started.
The circuit breaker for the public grid is
opened.
V01.00 05.11.2007 34/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Live-Demo
Micro Automation Set 29 Beitrags-ID 27074055
No. Instructions Note
5. The generator has to announce its
NET GEN
availability for emergency power
operation within this monitoring time (here
60 seconds) (simulated by switching on
the automatic cut-out  GEN ).
6. As soon as the monitoring relay for the
NET GEN
emergency power monitors that sufficient
supply is provided, a waiting period (here
10 seconds) is activated in the LOGO!.
This is to ensure that the emergency
power grid is stable.
7. The circuit breaker of the emergency
power grid is closed then.
The switching process to  emergency
power operation is finished.
Supply is now carried out via the
generator.
8. Switch the automatic cut-out  ON for the
NET GEN
public grid again.
9. The public grid returns again.
10. As soon as the monitoring relay for the
NET GEN
grid power monitors that sufficient supply
is provided, a waiting period (here 10
seconds) is activated in the LOGO!. This
is to ensure that the grid power is stable.
V01.00 05.11.2007 35/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Live-Demo
Micro Automation Set 29 Beitrags-ID 27074055
No. Instructions Note
11. After this waiting period, the switching
process to  grid power operation is
effected in the LOGO! and is processed
as follows:
A monitoring time for the grid power
operation return is started.
The circuit breaker for the emergency
power operation is opened.
The circuit breaker for the public grid is
closed.
12. The switching process to  public grid is
finished if the actions have been carried
out within this monitoring time (here 60
seconds) and when the circuit breaker for
the public grid announces its return.
Supply is now carried out via the public
grid again.
13. Afterwards the generator for the
NET GEN
emergency power operation can be
switched off.
(Simulated by switching off the automatic
cut-out  GEN ).
14. The switching process is finished.
V01.00 05.11.2007 36/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Live-Demo
Micro Automation Set 29 Beitrags-ID 27074055
6.1.3 Scenario 3: AUT - Grid failure with procedure error when generator is
requested
" Automatic mode
" Supply is now carried out via the public grid.
" Public grid fails for longer period of time
" At first the generator cannot carry out the task of the public grid
" The generator can carry out the task of the public grid on the second
attempt
" The public grid returns
Table 6-4
No. Instructions Note
1. Supply is carried out via the public grid.
2. Switch the automatic cut-out  OFF for the
NET GEN
public grid.
3. The public grid drops and a voltage dip
monitoring (here 3 secs) is effected in the
LOGO!
> 3sec
4. If the voltage dip monitoring is exceeded,
the switching process to  emergency
power operation is effected in the LOGO!
and is processed as follows:
The generator for the  emergency power
grid is requested.
A monitoring time for the generator return
T: 60sec
is started.
The circuit breaker for the public grid is
opened.
V01.00 05.11.2007 37/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Live-Demo
Micro Automation Set 29 Beitrags-ID 27074055
No. Instructions Note
5. Let the monitoring time (here 60 seconds)
for the availability of the generator pass.
NET GEN
(simulated by not switching on the
automatic cut-out  GEN )
> 60sec
6. As soon as the monitoring time for the
generator request is passed, the
switching process turns into a defined
error state.
The generator request for the emergency
power supply is reset.
7. Acknowledge the error with the button
 ACK .
ACK
8. The generator request for the emergency
power grid is requested again by this
action and the monitoring time (60
seconds) for the generator return is
triggered again.
T: 60sec
9. Now you have to simulate the availability
NET GEN
of the generator within the monitoring time
by switching on the automatic cut-out
 GEN .
< 60 sec
10. As soon as the monitoring relay for the
NET GEN
emergency power monitors that sufficient
supply is provided, a waiting period (here
10 seconds) is activated in the LOGO!.
This is to ensure that the emergency
power grid is stable.
V01.00 05.11.2007 38/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Live-Demo
Micro Automation Set 29 Beitrags-ID 27074055
No. Instructions Note
11. The circuit breaker of the emergency
power grid is closed then.
The switching process to  emergency
power operation is finished.
Supply is now carried out via the
generator.
12. Switch the automatic cut-out  ON for the
NET GEN
public grid again.
13. The public grid returns again.
14. As soon as the monitoring relay for the
NET GEN
grid power monitors that sufficient supply
is provided, a waiting period (here 10
seconds) is activated in the LOGO!. This
is to ensure that the grid power is stable.
15. After this waiting period, the switching
process to  grid power operation is
effected in the LOGO! and is processed
as follows:
A monitoring time for the grid power
operation return is started.
The circuit breaker for the emergency
power operation is opened.
The circuit breaker for the public grid is
closed.
16. The switching process to  public grid is
finished if the actions have been carried
out within this monitoring time (here 60
seconds) and when the circuit breaker for
the public grid announces its return.
Supply is now carried out via the public
grid again.
V01.00 05.11.2007 39/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Live-Demo
Micro Automation Set 29 Beitrags-ID 27074055
No. Instructions Note
17. Afterwards the generator for the
NET GEN
emergency power operation can be
switched off.
(simulated by switching off the automatic
cut-out  GEN )
18. The switching process is finished.
V01.00 05.11.2007 40/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Live-Demo
Micro Automation Set 29 Beitrags-ID 27074055
6.1.4 Scenario 4: AUT - Grid failure with subsequent grid return during
generator request
" Automatic mode
" Public grid fails ( > 3sec) and returns while the generator is requested
" Generator does not start operation
Table 6-5
No. Instructions Note
1. Supply is now carried out via the public
grid.
2. Switch the automatic cut-out  OFF for the
NET GEN
public grid.
3. The public grid drops and a voltage dip
monitoring (here 3 secs) is effected in the
LOGO!
> 3sec
4. If the voltage dip monitoring is exceeded,
the switching process to  emergency
power operation is effected in the LOGO!
and is processed as follows:
The generator for the  emergency power
grid is requested.
A monitoring time for the generator return
T: 60sec
is started.
The circuit breaker for the public grid is
opened.
5. Now you have to simulate the return of
the public grid within the monitoring time
NET GEN
by switching on the automatic cut-out
 NET .
< 50sec
V01.00 05.11.2007 41/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Live-Demo
Micro Automation Set 29 Beitrags-ID 27074055
No. Instructions Note
6. The return of the public grid for the
effected generator request is ignored at
first. You have to wait for the generator to
return.
7. As soon as the monitoring time for the
generator request is passed, the
switching process turns into a defined
error state.
The generator request for the emergency
power supply is reset.
8. Acknowledge the error with the button
 ACK .
ACK
9. By this acknowledgement the switching
process to  grid power operation is
effected in the LOGO! and is processed
as follows:
A monitoring time for the grid power
operation return is started.
The circuit breaker for the emergency
power operation is opened.
The circuit breaker for the public grid is
closed.
10. The switching process to  public grid is
finished if the actions have been carried
out within this monitoring time (here 60
seconds) and when the circuit breaker for
the public grid announces its return.
Supply is now carried out via the public
grid again.
V01.00 05.11.2007 42/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Live-Demo
Micro Automation Set 29 Beitrags-ID 27074055
6.1.5 Scenario 5: MAN  Manual mode circuit breaker NET
Table 6-6
No. Instructions Note
1. Set the knob switch "S1" to mode
 manual .
CLOSE
Serv Man Netz 0
Auto Gen
S3
S1 S2
ACK
S5
OPEN
S4
2. Set the knob switch "S2" to circuit breaker
selection  Net .
CLOSE
Serv Man Netz 0
Auto Gen
S3
S1 S2
ACK
S5
OPEN
S4
3. Now you are in manual mode and the grid
circuit breaker is selected.
4. Using the  OPEN button the grid circuit
breaker is opened or loaded, respectively. CLOSE
Using the  CLOSE button the grid circuit
OPEN
breaker is closed again.
Repeat this process several times.
The two circuit breakers are electrically
interlocked with each other. The grid
circuit breaker can only be closed if the
emergency power circuit breaker is
opened.
5. The final action is to open the grid circuit
breaker.
V01.00 05.11.2007 43/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Live-Demo
Micro Automation Set 29 Beitrags-ID 27074055
6.1.6 Scenario 6: MAN  Manual mode circuit breaker GEN
Table 6-7
No. Instructions Note
1. Set the knob switch "S1" to mode
 manual .
CLOSE
Serv Man Netz 0
Auto Gen
S3
S1 S2
ACK
S5
OPEN
S4
2. Set the knob switch "S2" to circuit breaker
selection  Gen .
CLOSE
Serv Man Netz 0
Auto Gen
S1 S2
S3
ACK
S5
OPEN
S4
3. Now you are in manual mode and the
emergency power circuit breaker is
selected.
4. Using the  OPEN button the emergency
power circuit breaker is opened or loaded, CLOSE
respectively.
OPEN
Using the  CLOSE button the emergency
power circuit breaker is closed again.
Repeat this process several times.
The two circuit breakers are electrically
interlocked with each other. The
emergency power circuit breaker can only
be closed if the grid circuit breaker is
opened.
The final action is to open the emergency
power circuit breaker.
V01.00 05.11.2007 44/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Live-Demo
Micro Automation Set 29 Beitrags-ID 27074055
6.1.7 Scenario 8: SERVICE  Service operation
Table 6-8
No. Instructions Note
1. Make sure the circuit breakers are
powered by the public grid or by the
emergency power operation.
NET GEN
In this scenario it is powered by the public
grid!
2. Switch the knob switch  S2 to  0 and
knob switch  S1 to  service .
CLOSE
Serv Man Netz 0
Auto Gen S3
S1 S2
ACK
S5
OPEN
S4
In this mode LOGO! is disabled and no
unwanted actions will occur.
3.
Now you are in  service operation .
By this selection the circuit breakers are
powered by the public grid.
Both circuit breakers are open.
4. Switch both circuit breakers to  manual
mode.
The circuit breakers are not interlocked
with each other. The two circuit breakers
must not be switched on at the same time
if grid voltage and generator voltage is
available.
NET GEN
V01.00 05.11.2007 45/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Live-Demo
Micro Automation Set 29 Beitrags-ID 27074055
No. Instructions Note
5. Now for the circuit breakers of the public
grid.
Using the  OPEN button the circuit
breaker is opened or loaded, respectively.
Using the  CLOSE button the circuit
breaker is closed again.
NET
Repeat this process several times.
The final action is to open the grid circuit
breaker.
6. Now for the circuit breaker of the
generator
Using the  OPEN -button the circuit
breaker is opened or loaded, respectively.
Using the  CLOSE -button the circuit
breaker is closed again.
GEN
Repeat this process several times.
The final action is to open the emergency
power circuit breaker.
7. The scenario for this service operation is
now completed.
Both circuit breakers are open.
V01.00 05.11.2007 46/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Technical data
Micro Automation Set 29 Beitrags-ID 27074055
7 Technical data
7.1 SITOP
Table 7-1
Criterion Technical data Additional note
SITOP Power INPUT VOLTAGE :
AC120/230V, 50/60Hz
OUTPUT VOLTAGE: 24V+/-
3%
PERMISSIBLE RANGE :
93...132/187...264V
ADJUSTMENT RANGE :
22.8...26.4V
SITOP DC-UPS-Module 6 SITOP DC-UPS-MODULE 24V
/ 6A WITH POTENTIAL-FREE
USB-INTERFACE INPUT: DC
24V / 6.85A OUTPUT: DC 24V
/ 6A
SITOP POWER BATTERY SITOP POWER BATTERY
MODULE MODULE 1.2 AH WITH
MAINTENANCE-FREE,
SEALED LEAD BATTERIES
FOR SITOP POWER DC-
UPS-MODULE 6
7.2 LOGO!
Table 7-2
Criterion Technical data Additional note
LOGO! logic module PS/ I/O DC12/24V / DC12/24V Logic module with display
(12/24RC) / relay 8DE (2AE 0..10V)/4DA and keys
130 blocks
expandable in modules
LOGO! DM8 24R EXPANSION PS/ I/O AC/DC 24V / AC/DC 2TE
MODULE 24V PNP and NPN / relay
4DE/4DA
V01.00 05.11.2007 47/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Technical data
Micro Automation Set 29 Beitrags-ID 27074055
7.3 SENTRON
Table 7-3
Criterion Technical data Additional note
SENTRON circuit breaker VL ICU=40kA, 415V AC 3-pin, Plant protection
160N
Shunt trip 24V AC/DC auxiliary over current release TM, LI
switch installation set 2 HS IN=50A, rated current
(1NO+1NC) IR=40...50A,
Overload protection
II=300...600A, short circuit
protection, protection
Motorized operating 220...250V AC/DC
mechanism with spring energy
store
7.4 SIRIUS
Table 7-4
Criterion Technical data Additional note
SIRIUS monitoring relay 3UG4 PHASE FAILURE 3X 160 TO DIGITAL MONITORING
690V AC 50 TO 60 HZ RELAY FOR 3-PHASE
GRID VOLTAGE
UNDERVOLTAGE AND
OVERVOLTAGE 160-690V AUTOMATIC
HYSTERESIS 1-20V CORRECTION OF PHASE
SEQUENCE
OFF-DELAY 0-20S
ASYMMETRY 0-20% SCREW CONNECTION
1W FOR PHASE
CORRECTION
1 W FOR GRID ERROR
Contactor 2NO+2NC, DC 24V SCREW CONNECTION
Resetting element RC ELEMENT AC 24...48V, SURGE SUPPRESSOR
DC 24...70V
FOR PLUGGING ONTO
CONTACTORS
V01.00 05.11.2007 48/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved
Technical data
Micro Automation Set 29 Beitrags-ID 27074055
7.5 Instruction and display devices
Table 7-4
Criterion Technical data Additional note
Knob switch ACTUATING ANGLE 2 X 50 COMPLETE UNIT,
DEGREES BLACK, ROUND KNOB SWITCH,
I-O-II, LATCHING,
1NO, 1NO WITH SUPPORT
SCREW CONNECTION
Push button (yellow) 1NO WITH SUPPORT COMPLETE UNIT,
ROUND PUSH BUTTON
WITH FLAT BUTTON
YELLOW, SCREW
CONNECTION
Push button (green) 1NO WITH SUPPORT COMPLETE UNIT,
ROUND PUSH BUTTON
WITH FLAT BUTTON
GREEN, SCREW
CONNECTION
Push button (red) 1NC WITH SUPPORT COMPLETE UNIT,
ROUND PUSH BUTTON
WITH FLAT BUTTON
RED, SCREW
CONNECTION
V01.00 05.11.2007 49/49
Set29_DocTech_v1d3_en.doc
Copyright
�
Siemens AG 2007 All rights reserved