Complete Guide for On site Maintenance and Troubleshooting of ZF ClearCommand 9000 Series Ship Propulsion Control System

The processor corresponding to the communication timeout with processor N between 50 and 54 did not correctly set the A0 number or power off to check the A0 setting; Check processor power supply

56 high voltage fault: battery voltage exceeds 30VDC for 2 seconds. Check the generator voltage regulator

57 low voltage fault: The battery voltage is below 10VDC for 2 seconds. Check the battery charging system and connection terminals

4.3 Electromagnetic valve monitoring error (error codes 1-10, H2 needs to be enabled)

Error code meaning handling

1. Check the resistance of the reverse clutch solenoid valve coil for short circuit (should be greater than 2 Ω); Check if the circuit is short circuited to ground

Check if the solenoid coil of the reverse clutch solenoid valve is burnt out due to an open circuit; Check if the circuit is broken

5. Short circuit of forward clutch solenoid valve with error code 1

6 Forward clutch solenoid valve open circuit with error code 2

9. Drag the proportional solenoid valve to check if the current exceeds the limit; Check the coil

10 drag proportional solenoid valve open circuit check for circuit continuity

Troubleshooting of control transfer faults

Station Transfer is one of the most commonly used functions of the ClearCommand system. If the transfer fails, it should be investigated in the following order:

5.1 Verification of Necessary Conditions

The successful transfer of control must simultaneously meet the following requirements:

The control lever of the receiver console is in neutral/idle position (A/D value 485~505).

The transfer button on the receiver console is pressed (signal changes from 5V to 0V).

5.2 Diagnostic steps

Enter the diagnostic menu H0 and scroll to the corresponding station's A/D value display. Confirm that the A/D value is between 485 and 505.

Continue scrolling to the transition button status display interface. When the button is not pressed, the corresponding position displays "0"; When pressed, it changes to "1".

If the A/D value is normal but the transfer is invalid, check if the orange line (button signal) is open.

5.3 Special Tips

The colors of terminals 5 and 7 on the port and starboard control consoles are opposite: the blue line on the port side is at terminal 5, and the yellow line is at terminal 7; The yellow line on the starboard side is at terminal 5, and the blue line is at terminal 7. Reverse connection can cause the processor to misjudge the direction of the joystick.

When installing the aft facing console (with the operator facing the stern), it is necessary to exchange the connections of terminals 5 and 7.

Common problems with engine synchronization function

6.1 Waiting for throttle synchronization not working

Phenomenon: The green LED does not light up, or there is a significant difference in engine speed between the two engines.

Possible reasons and solutions:

Synchronization not enabled: Push both control levers to a throttle range greater than 5% and press and hold the transfer button for 5 seconds. If the green LED lights up (turns off when released) when the button is pressed, it indicates that synchronization is disabled. Press and hold again for 5 seconds to reactivate.

Serial communication line not connected: Check if the 6-pin gray plug between the left and right side processors is secure.

Processor not set to dual paddle mode: Check if A1 value is 02.

Duplicate processor numbers: Check if A0 values are 01 and 02 respectively.

6.2 Active synchronization does not work (waiting for throttle synchronization to work normally)

Phenomenon: After synchronization is enabled, the green LED flashes but cannot remain stable and on, or there is a large difference in speed.

Possible reasons and solutions:

Signal loss of speed sensor: Enter diagnostic menu H0 and check the speed frequency display. If "0000" is displayed, check the sensor and wiring. Active synchronization will be downgraded to equal throttle synchronization after losing the speed signal.

Mismatched sensor type: AC coupled sensor (such as magneto electric type) connected to TB9-2; Connect the open electrode sensor (such as Hall type) to TB9-3 and use a three core cable (red+9V, green signal, black return).

Improper E7 value setting: It is recommended to use 01 for mechanical throttle models (downgrade to equal throttle synchronization when speed signal is lost), and avoid using 03 (completely stop synchronization when speed signal is lost).

Key points for adjusting drag mode

Dragging mode is used to reduce shaft speed by controlling clutch slip during low-speed navigation. The order of calibration is crucial:

Enable drag: Set L0 to 01~04 (angle range).

Select drag valve type (L1):

Servo drag: Value 20 (lock position cable retracts) or 21 (lock position cable extends).

Electromagnetic valve drag: value 00~07, select the preset current curve according to the ZF gearbox model.

Adjust the minimum pressure (L2):

Enter drag mode (flashing red light) and push the joystick to the forward position.

Measure the current shaft speed using a shaft tachometer.

Adjust the L2 value to make the shaft speed 30-50% of the idle shaft speed.