ZF MM9000 User Manual

261
EN 3340.758.003a - 2014-11
APPENDIX B - QFA & DVTP
ENG-127 Rev A.1 02/12 Page 261
ENG-127 9000 Series Micro/ClearCommand Servo Throttle - Servo Clutch QFA & DVTP
Design Verification Test Procedure
The MicroCommander/ClearCommand 9000 Series (servo throttle, servo clutch version) Propulsion Control
System is compliant to the environmental design standards in 46 CFR 62.25-30.
The following test procedure covers the 4 items included in the Qualitative Failure Analysis; 1) Control
Head Potentiometer failure, 2) Loss of power supply, 3) Throttle Feedback Potentiometer failure, and 4)
Clutch Feedback Potentiometer failure.
Failure: Control Head Potentiometer failure.
a Results: The Processor will shift to Neutral (if needed) and throttle will go to Idle, (if needed).
b Test Procedure
1. Turn power ON to both Port and Starboard Processors. Take command at a Control Head.
2. Move the Port and Starboard Control Head levers to approximately ½ Ahead.
3. Locate the green wire coming from the Port Control Head in command, connecting to pin 6
of the respective terminal block on the Processor circuit board. Disconnect it from the
Processor circuit board.
• The Port Processor will shift to Neutral (if needed) and throttle will go to Idle (if
needed).
• The Port Control Head will give an audible tone indicating a faulty
potentiometer.
4. Move the Port and Starboard Control Head levers back to Neutral. Reconnect the green
wire.
5. Take command at the Control Head
6. Repeat for Starboard side.
Failure: Power failure to MicroCommander/ClearCommand 9000 Series
A power failure to the MicroCommander/ClearCommand 9000 Series circuit board will have the same results
as a failed microprocessor
a Results
1. Throttle and clutch will remain at last commanded position.
2. LED at Control Heads will not be lit.
3. Opposite engine still under power has full control.
b Test Procedure.
1. Turn power ON to both Port and Starboard Processors. Take command at a Control Head.
2. Move the Port and Starboard Control Head levers to approximately ½ Ahead.
3. Turn power OFF to the Port side only.
• Port side throttle and clutch will remain at last commanded position.
• LED on the Port side of the Control Head in command will go OFF.
• The Port Control Head will no longer have command of the engine and gear.
• The Starboard Control Head will still have full command of the Starboard
engine and gear.
4. Turn power ON to the Port Processor. Return Control Head lever to Neutral. Take command
of the Port side.
• The Port Control Head will operate as usual-(Non-volatile memory)
5. Repeat test for Starboard Processor.

ZF MM9000 Specifications

General

Brand	ZF
Model	MM9000
Category	Computer Hardware
Language	English