ZF Marine MM9000 ClearCommand Marine Propulsion Control System

ZF Marine MM9000 ClearCommand Marine Propulsion Control System

System Overview

ClearCommand is a ZF marine propulsion electronic control system that provides integrated control of throttle, clutch, and towing valves for leisure and light commercial vessels. A single processor corresponds to a single engine/clutch, and dual propellers require two processors to communicate and collaborate through serial ports.

Applicable models: covering full configuration of mechanical/electronic throttle, servo/solenoid clutch, mechanical/solenoid drag

Control station: Standard up to 5, expandable to 9 through Station Expander

Power supply: 12/24VDC, working voltage 8~30VDC, continuous current 10A

Core advantages: single pole control, disturbance free switching between stations, safe commutation delay, dual propeller synchronization, precise towing control

Hardware model and configuration

Six processors correspond to different propulsion structures:

Model, throttle type, clutch type, towing type

9120 mechanical (servo) solenoid valve none

9121 mechanical (servo) solenoid valve servo

9122 mechanical (servo) solenoid valve solenoid valve

9210 electronic servo none

9211 electronic servo

9221 electronic solenoid valve servo

Operation function

Basic Operations

Power on self-test: idle+neutral, prompt sound indicating no control authority

Seize control: Press the switch button in neutral for 0.5 seconds, and the red light will remain on

Control logic: * * 15 ° * gear shift, * * 65 ° * * linear acceleration

Advanced Mode

Warm up mode: Long press the neutral switch button → push forward, the red light flashes slowly, and the clutch remains in neutral

High and low idle: High idle maximum * * 20% * * throttle, warm-up automatically activated

Single stick mode (double paddle): Either stick is set as the main stick, the green light is on, and the single stick controls both machines

Engine synchronization: Wait for throttle/active synchronization, constant green light indicates synchronization completion

Proportional delay commutation: prevents commutation shock, adjustable delay from 0 to 99 seconds

Drag Mode 

Enable: Press and hold the switch button in neutral for 2 seconds, and the red light will flash rapidly

Gear: 20/35/45/55 ° four speed drag range, throttle limit 10~75%

Installation specifications

Processor installation

Location: Dry place in the engine compartment, away from high temperature/strong magnetic field ≥ 1.2m, anti vibration installation

Grounding: 12AWG cable to ship grounding bar

Installation of control head

Waterproof: 400/MC2000 bottom protection, 700 series fully waterproof

Journey: Full travel without interference before and after

Wiring and mechanical connections

Wiring harness: shielded wire, fixed every 45cm, anti reverse insertion of connectors

Push pull cable: 33C type, length ≤ 6m, bending radius ≥ 25cm, total bending<270 °

Setting and Debugging

Setup method

Interface: 4-digit 7-segment LED, 4 buttons (left/right/up/down)

Enter settings: Simultaneously press and hold the left and right keys until flashing

Save: Simultaneously press and hold the left and right keys until the flashing stops

Core Function Code

System: A0 processor recognition (1-5), A1 engine count (1-5), A2 single pole mode, A3 station expansion

Throttle: E0 type, E1 neutral throttle, E2 minimum, E3 maximum, E6 high idle, E7 synchronous

Clutch: C0 pressure interlock, C2 proportional delay, C3 delay time, C5 direction

Dragging: L0 enabled, L2 minimum pressure, L3 maximum pressure, L4 oil threshold

Experimental verification

Mooring test: control, start interlock, stop switch, push-pull cable, high idle speed

Navigation test: full speed setting, synchronization, proportional delay, towing pressure calibration

Record: Fill in the F-226 test report and retain the parameters

Maintenance and upkeep

Cycle: Annual comprehensive inspection

Inspection items: Corrosion of control head terminals, connection of processors, damage to wiring harnesses, tightening of push-pull cables, power supply voltage

Power supply: The battery voltage is measured every 3 months, with 12V fully charged at 12.6-12.8V and 24V fully charged at 25.2-25.6V

Fault diagnosis

Diagnostic menu (H0)

Real time viewing: battery voltage, speed frequency, joystick position, switch key status, servo feedback, software version

Sound alarm (Class 7)

Slow intermittent sound: No control when powered on

One long and three short: joystick signal exceeds range

Long tone: Program shutdown/low voltage

5-second long tone: serial communication lost

fault code

Coverage: servo stalling, solenoid valve failure, low pressure, communication abnormality, gear failure

Key issues

Question 1: What are the two types of engine synchronization for twin propeller ships? What conditions do they each rely on?

answer:

Waiting for throttle synchronization (open-loop): Only controls the throttle stroke to be consistent, without the need for a speed sensor, relying on the consistency of push-pull cables/electronic signals.

Active synchronization (closed-loop): To adjust the throttle compared to the actual speed, a speed sensor must be installed with an accuracy of ± 1%. If the sensor signal is lost, it can be switched back to the throttle.

Question 2: What is the difference between the function of Proportional Pause and the three modes?

Answer: The function is to slow down to idle and delay during reversing, protecting the gearbox and transmission system. Three modes:

C2=00 gear shift delay: maintain the original gear position, switch direction after delay

C2=01 Neutral Delay: Switch to neutral and change direction after delay

C2=02 Fixed Neutral Delay: Fixed delay time, mostly used for bow side pushing

Question 3: What are the four conditions that must be met if the system cannot start the engine (start interlock takes effect)?

Answer: It must simultaneously satisfy:

The DC power supply of the processor has been connected

A control station has seized control

The control lever is in neutral position

The start interlock relay has been closed