PIMH0059.docx | Rev 1.1 | Modified on 27/10/2017 | © Remote Control Technologies Pty Ltd
PRODUCT INFORMATION
DOOR OPEN PARK BRAKE INTERLOCK 12/24 VOLT
Part No. 12848
Operation and Use
When the doors are closed and the park brake is applied,
the park brake interlock is in its armed state.
When the park brake is applied and a door is opened, this
has no effect on the door open park brake interlock until the
park brake is released.
When the park brake is released, the ground speed signal is
below the pre-set limit (set to 50 Hz by default) and a door is
opened, a pre-application alarm will begin to pulse. After the
pre-set alarm period (set to five seconds by default), the pre-
application alarm will stop pulsing and turn on solid, and the
park brake will be automatically applied. After a further short
delay (set to two seconds by default), another output will
become active. This may be used to activate an external
alarm or the OEM horn; or it may be used to bleed off
steering accumulator pressure.
When the park brake is released, the ground speed signal is
above the pre-set limit and a door is opened, a pre-
application alarm will begin to pulse. The alarm will continue
to pulse until either:
1. The door is closed, OR
2. The ground speed signal drops below the preset limit,
in which case the alarm will begin to pulse faster and
follow the cycle detailed in the previous paragraph.
To reset the device once a fault has occurred, it will be
necessary to apply the park brake, close the door and then
cycle the ignition. The door open park brake interlock has an
option to incorporate a reset switch, so that the machine
does not need to be turned off and on again when the park
brake interlock has been activated.
Controller Status Indicator Operation
■All indicators will turn on.
■All indicators will turn off.
■After power-up, the controller will revert to normal operation.
Status Indicator in Operation
■If outputs have problems, this will turn on.
■Outputs 1 & 2 – high current outputs: checked for over current.
■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.
■Flashes when valid input goes active (number of flashes = input number).
■Allows checking that inputs are correctly wired and that the hardware is seeing the input
toggle.
Installation Guide
RCT recommends a risk assessment be carried out prior integrating with a machines OEMPark Brake system or any other system
that may assert control over a critical safety system.
1. Mount the control unit in suitable location.
2. Refer to the following wiring connections table and external wiring diagram to connect the control unit. It is recommended that
the wiring be installed alongside the OEM wiring ensuring that it is secured at regular intervals; this will provide protection
from heat and abrasion, and any other excess damage that may occur with extended vehicle operation. When securing the
wiring to the OEM wiring, ensure that the loom is away from moving vehicle parts, which could lead to loom damage.
3. Mount the LED alarm on the instrument panel in the cabin in clear view of the operator.
