C102964-0 Page 1 of 10

02.04.2008

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DOC-1017-1

Voltage Supply

Service Manual

Revision history:

REV. DATE MODIFIER DESCRIPTION

0 2.4.2008

AaNi Created

A

B

C

D

E

F

C102964-0 Page 2 of 10

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DOC-1017-1

1

CONTROL VOLTAGE SUPPLY......................................................................................................... 3

2

AC SUPPLY ............................................................................................................................................ 4

3

24 VDC SUPPLY FOR ELECTRIC AND CONTROL ...................................................................... 5

3.1

P

OWER SUPPLY VARIATIONS FOR EQUIPMENT CONNECTED TO

D.C.

SYSTEMS

................................ 5

3.2

P

OWER SUPPLY VARIATIONS FOR EQUIPMENT CONNECTED TO BATTERY POWER SUPPLY

.............. 5

4

24 VDC SUPPLY FOR INSTRUMENTS (ALARM TRANSDUCERS ETC.)................................. 6

4.1

P

OWER SUPPLY VARIATIONS FOR EQUIPMENT CONNECTED TO

D.C.

SYSTEMS

................................ 6

4.2

P

OWER SUPPLY VARIATIONS FOR EQUIPMENT CONNECTED TO BATTERY POWER SUPPLY

.............. 6

5

VOLTAGE SUPPLY ALARMS AND FAILURES............................................................................. 7

5.1

C

ONTROL SYSTEM VOLTAGE ALARM

............................................................................................... 7

5.2

C

ONTROL VOLTAGE ALARM TEST

.................................................................................................... 9

5.2.1

Starting ........................................................................................................................................ 9

5.2.2

Main control voltage alarm (AC supply) ..................................................................................... 9

5.2.3

Main control voltage alarm F1 circuit breaker ........................................................................... 9

5.2.4

Back-up control voltage alarm F2 circuit breaker .....................................................................10

5.2.5

Automatic change-over to back-up supply..................................................................................10

5.2.6

Indication system voltage alarm F3 circuit breaker...................................................................10

C102964-0 Page 3 of 10

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DOC-1017-1

1 C

ONTROL VOLTAGE SUPPLY

The Steerprop control voltage supply is redundant and straightforward system. The
main control system is supplied from single phase AC network and from a back-up
battery. The indication and back-up control systems are supplied from battery. The
battery should be separate from the engines starting batteries.

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DOC-1017-1

2 AC

SUPPLY

‰

Permanent frequency variations ..........................................± 5 % of nominal

‰

Permanent voltage variations....................................... + 6/- 10 % of nominal

‰

Frequency transients (5 s duration) ...................................± 10 % of nominal

‰

Voltage transients (1,5 s duration) .....................................± 20 % of nominal

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DOC-1017-1

3 24

VDC

SUPPLY FOR ELECTRIC AND CONTROL

3.1 P

OWER SUPPLY VARIATIONS FOR EQUIPMENT CONNECTED TO

D.C.

SYSTEMS

‰

Voltage tolerance continuous ............................................ 21.6 … 26.4 VDC

‰

Voltage transients cyclic variation .......................................± 5 % of nominal

‰

Voltage ripple ....................................................................± 10 % of nominal

3.2 P

OWER SUPPLY VARIATIONS FOR EQUIPMENT CONNECTED TO

BATTERY POWER SUPPLY

When using low voltage battery supply, the charging equipment, batteries and cables
are to keep the voltage at equipment terminals within below defined tolerances of the
nominal voltage during charging and discharging. The battery is not allowed to connect
to engine starting systems.

‰

Voltage tolerance .................................................................. 19.2 … 30 VDC

‰

Voltage transients (up to 2 s duration) ..............................± 20 % of nominal

Provisions are to be made for preventing reverse current from the battery through the
charging device.

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DOC-1017-1

4 24

VDC

SUPPLY FOR INSTRUMENTS

(

ALARM

TRANSDUCERS ETC

.)

4.1 P

OWER SUPPLY VARIATIONS FOR EQUIPMENT CONNECTED TO

D.C.

SYSTEMS

‰

Voltage tolerance continuous ............................................ 21.6 … 26.4 VDC

‰

Voltage transients cyclic variation .......................................± 5 % of nominal

‰

Voltage ripple ....................................................................± 10 % of nominal

4.2 P

OWER SUPPLY VARIATIONS FOR EQUIPMENT CONNECTED TO

BATTERY POWER SUPPLY

When using low voltage battery supply, the charging equipment, batteries and cables
are to keep the voltage at equipment terminals within below defined tolerances of the
nominal voltage during charging and discharging. The battery is not allowed to connect
to engine starting systems.

‰

Voltage tolerance .................................................................. 18 … 31.2 VDC

‰

Voltage transients (up to 2 s duration) ..............................± 25 % of nominal

PROVISIONS ARE TO BE MADE FOR PREVENTING REVERSE CURRENT FROM THE
BATTERY THROUGH THE CHARGING DEVICE.

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DOC-1017-1

5 V

OLTAGE SUPPLY ALARMS AND FAILURES

5.1 C

ONTROL SYSTEM VOLTAGE ALARM

Control system voltage alarm can be due to following reasons:

‰

Control system 220 V supply

‰

PLC 24 VDC supply

‰

24 VDC back-up supply

‰

Voltage supply for remote indicators

‰

Circuit breaker for fans and brakes at BFU

‰

Circuit breakers at SCU

If the circuit breaker or switch is open, find out the reason. If the breaker or switch is
opened by means, check, if you can close it or not.

If the reason is failure, find the real reason and repair it before closing the circuit
breaker.

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DOC-1017-1

FAULT EFFECT TEMPORARY

ACTION

CAUSE REMEDY

Vessel switchboard
supply switch is open

Close switchboard
switch

Wire is broken, short
circuit or connection

is open

Repair cabling or
wiring failure

Control system
220 VAC supply

Control system
transfer

automatically to
back-up supply.

Not needed.

Converter AP02 is
broken

Replace the converter

Supply protection

circuit breaker F1
blown

Close circuit breaker

PLC power supply
broken

Replace PLC power
supply

Wire is broken, short

circuit or connection
is open

Repair cabling or

wiring failure

PLC 24 VDC

supply (Indication
HI17 does not lit)

-The main control

of one propulsor
does not work
-Propeller motor

rpm set is going
to zero

If you can’t

operate with one
propulsor, use
back-up control

for this propulsor.

Control voltage switch
is open.

Close control switch

Supply protection

circuit breaker F2
blown

Close circuit breaker

Vessel switchboard

supply switch is open

Close switchboard

switch

24 VDC back-up

supply failure

If the 220 VAC

main supply is
working, main

control will
continue operate

normally

Not needed. Be

careful.

Wire is broken, short

circuit or connection
is open

Repair cabling or

wiring failure

Supply protection

circuit breaker F3
blown

Close circuit breaker

Vessel switchboard
supply switch is open

Close switchboard
switch

24 VDC supply

for remote angle
indicators failure

The display does

not operate.

Follow the

mechanical
display at

propulsor.

Wire is broken, short

circuit or connection
is open

Repair cabling or

wiring failure

C102964-0 Page 9 of 10

02.04.2008

© The information contained in this document is the sole property of Steerprop Ltd. any reproduction or disclosure in part or whole without written permission is prohibited.

DOC-1017-1

5.2 C

ONTROL VOLTAGE ALARM TEST

This test procedure includes all control voltages supplies for propulsor

‰

Main control voltage from AC supply, circuit breaker F1

‰

Back-up control voltage 24 VDC, circuit breaker F2

‰

Indication voltage supply 24 VDC, circuit breaker F3

5.2.1 S

TARTING

‰

Supply switch SS01 OFF

‰

Local control SC01 selected

5.2.2 M

AIN CONTROL VOLTAGE ALARM

(AC

SUPPLY

)

‰

Check, that AC supply to SMU is on. Measure with digital multimeter, that
the voltage between terminals L1 and L2 is over 90 VAC. Also the green
running LED should be on at AP02.

‰

Turn supply switch SS01 ON

‰

You can verify the voltage level between terminals 222 and 223. It should
be over 22 VDC.

5.2.3 M

AIN CONTROL VOLTAGE ALARM

F1

CIRCUIT BREAKER

‰

Switch OFF the circuit breaker F1 from SCU.

‰

Control voltage alarm will appear.

‰

Control system alarm will appear.

‰

Low steering speed and wrong direction alarm will appear.

‰

Lubrication oil pressure alarm will appear.

‰

Lubrication oil start level alarm will appear.

‰

Lubrication oil high temperature alarm will appear.

‰

Switch circuit breaker F1 ON.

‰

Main control starts and remote control is operational.

‰

Alarms will disappear.

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DOC-1017-1

5.2.4 B

ACK

-

UP CONTROL VOLTAGE ALARM

F2

CIRCUIT BREAKER

‰

Verify the voltage level between terminals 202 and 203. It should be over
22 VDC.

‰

Turn the propulsor with local steering LCR / SC02.

‰

You can verify the voltage level between terminals 202 and 203. It should
be over 22 VDC.

‰

Switch OFF the circuit breaker F2 from SCU.

‰

Control voltage alarm will appear.

‰

Switch circuit breaker F2 ON.

‰

Alarm will disappear.

5.2.5 A

UTOMATIC CHANGE

-

OVER TO BACK

-

UP SUPPLY

‰

Switch OFF the AC supply from vessel switchboard.

‰

The control voltage supply goes automatically to back-up supply.

‰

The relay KM1 change the supply to back-up

‰

You can verify the voltage level between terminals 222 and 223. It should
be over 22 VDC.

‰

Remote control is still operational.

‰

Control voltage alarm will appear.

‰

Connect the supply from vessel AC supply ON.

‰

The green led at AP02 lit.

‰

The relay KM1 changes the supply to main supply.

‰

You can verify the voltage level between terminals 222 and 223. It should
be over 22 VDC.

5.2.6 I

NDICATION SYSTEM VOLTAGE ALARM

F3

CIRCUIT BREAKER

‰

All angle indicators should go to the same position as the mechanical
indicator at propulsor is.

‰

Turn the propulsor with local steering LCR / SC02. You can see the
indicators following the mechanical indicator.

‰

You can verify the voltage level between terminals 802 and 803. It should
be over 22 VDC.

‰

Switch OFF the circuit breaker F3 from SCU

‰

Control voltage alarm will appear.

‰

Switch circuit breaker F3 ON.

‰

Alarm will disappear.