ZF MM9000, Installation, Operation And Troubleshooting Manual

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EN 3340.758.003a - 2014-11
APPENDIX B - QFA & DVTP
ENG-143 Rev - 04/04 Page 264
ENG-143 ClearCommand 9000 Series Throttle - Solenoid Clutch QFA & DVT
d Each propulsion-control system, including one operable from the pilothouse, must be
designed so that no one complete or partial failure of an easily replaceable component of the
system allows the propulsion engine to over speed or the pitch of the propeller to increase.
184.620 Propulsion engine control systems.
a A vessel must have two independent means of controlling each propulsion engine. Control
must be provided for the engine speed, direction of shaft rotation, and engine shutdown.
1. One of the means may be the ability to readily disconnect the remote engine control linkage
to permit local operation.
2. A multiple engine vessel with independent remote propulsion control for each engine need
not have a second means of controlling each engine.
b In addition to the requirements of paragraph (a), a vessel must have a reliable means for
shutting down a propulsion engine, at the main pilothouse control station, which is
independent of the engine's speed control.
c A propulsion engine control system, including pilothouse control, must be designed so that a
loss of power to the control system does not result in an increase in shaft speed or propeller
pitch.
The ZF Marine Propulsion Systems Miramar ClearCommand 9000 Series (electronic throttle, solenoid
clutch version) marine engine controls offer single lever control of speed and direction. Each enclosure
houses an independent Control Processor and requires separate power supplies. The system operates on
12 or 24VDC power and can have up to five remote stations depending on the application. The system
sequences the operation of speed and shift in order to prevent an inexperienced operator from mishandling
the engine or transmission.
A standard feature is an alarm contact (normally open) to interface with the main alarm system of the
vessel. This switch will open and activate the alarm system with a power loss or CPU failure. In addition,
ZF Marine Propulsion Systems Miramar provides audible tones at the Control Head locations to indicate
system faults.
Design Verification Test Procedure
The ClearCommand 9000 Series (electronic throttle, solenoid clutch version) Propulsion Control System is
compliant to the environmental design standards in 46 CFR 62.25-30.
The following test procedure covers the 2 items included in the Qualitative Failure Analysis; 1) Control
Head Potentiometer failure, and 2) Loss of power supply.
Failure: Control Head Potentiometer failure.
a Results:
• The Processor will shift to Neutral (if needed) and throttle will go to Idle, (if needed).
ITEM
NUMBER
FAILED
COMPONENT
ALARM
STATUS
INITIAL
RESULT
FINAL
OUTCOME
1 ZF Marine Propulsion
Systems Miramar CON-
TROL HEAD
AUDIBLE TONE WILL
SOUND AT CONTROL
HEAD
THROTTLE RESETS TO
IDLE
NO INCREASE IN
ENGINE RPM
CLUTCH SHIFTS TO NEU-
TRAL
NO INCREASE IN
SHAFT SPEED
2 LOSS OF POWER SUP-
PLY
ALARM CIRCUIT WILL
OPEN
THROTTLE RESETS TO
IDLE
CLUTCH SHIFTS TO NEU-
TRAL
NO INCREASE IN
ENGINE RPM
NO INCREASE IN
SHAFT SPEED