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M0712.docx | Rev 4.1 | Modified on 13/05/2021 | © Remote Control Technologies Pty Ltd
Operation and Use
The Muirhead
®
Idle Timer Controller, part number 11450, operates (by default) by shutting down the machine
after a three-minute time delay when the ignition is switched off. The operation of the controller is detailed
below;
1. Turn the ignition switch off.
−
The machine will continue to run for the pre-programmed time cycle with the cycle LED (usually
mounted in the instrument panel) illuminated. Once the timed cycle has been completed, the machine
will shut down.
−
If the ignition is switched back to run at any time within the timed cycle, the timer will reset and
commence the full cycle, once the ignition is switched back to off position.
2. Activating the engine shutdown switch while the unit is in idle down mode will cause the machine to shut
down immediately. This will only occur with the ignition in the off position.
Note
If the ground level shutdown feature is active, then the engine shutdown switch will shut down the machine
when the key is in the on or off position.
Park Brake Applied Detection (Optional)
If this option is used, the park brake switch must be connected to the controller.
1. When the key is switched to the off position and the park brake is applied, the controller will enter idle
down mode. If the park brake is released while in idle down mode, the alarm will sound and the machine
will shut down instantly, preventing an operator driving off with the key in the off position.
2. If the key is switched off at any time with the park brake released, the machine will shut down immediately
and the alarm will sound.
3. If an operator is required to mobilise the machine whilst the key is switched to the off position and the
machine is in idle down mode, the key must be returned to the run position before the park brake is
released.
Ground Level Shutdown (Optional)
If this option is used, it allows additional ground level shutdown switches to be installed in series with the
standard engine shutdown switch. It also allows the machine to be shut down at any time whether it is in idle
down mode or not.
These switches allow for shutdown of the machine when not in idle down mode (key ON).
To activate this option, pin 7 must be connected to machine ground.
Warning
This product has been designed to shut down the engine while at idle only. If the engine RPM is high, there is
a possibility of the control unit not being able to force a shutdown.
Controller Status Indicator Operation
State
Indicator Sequence
Battery Power-up
■
All indicators will turn on.
■
All indicators will turn off.
■
After power-up, the controller will revert to normal operation.
Status Indicator in Operation
RED
– Fault.
■
If outputs have problems, this will turn on.
■
Outputs 1 & 2 – high current outputs: checked for overcurrent.
■
Output 3 – not checked as it is a low side driver.
■
Output 4 – checked for correct output voltage.
■
Temperature – checked for board temperature exceeding 80 °C.
YELLOW
– Pulses during normal operation, indicates system OK.
■
Flashes on and off at one-second intervals (on for one second, off for one
second).
GREEN
– On for normal operation.
Alarm Indication
System Status
Power Indication