3
Installation
•
To avoid damage, it is advised to disconnect any electrical equipment during welding on car
•
Pay attention to correctly connect power terminals. Any attempt to crank the engine with
reverse terminal connection will most likely damage the device. Polarity is clearly
engraved on the case.
3.1 Mounting
The device automatically shuts down at 90°C internal temperature. Temperature warning for the device
is set at 80°C. It is advised to install the device in cool, well ventilated place on a flat metal piece of
chassis.
The device will provide specified continuous current when firmly installed on flat metal piece of
chassis in an ambient temperature of 30°C. Device performance will vary depending on how much heat
dissipation you provide.
After installation you should verify that during normal operation the device has enough temperature
headroom not to fail during racing conditions.
3.2 Electrical connection
The device is connected between battery positive (+) terminal and rest of vehicle installation.
The device has two switch inputs:
•
Power save switch input
. When this input
is connected to ground
the device shuts down the
engine and turns off to very low current consumption level <1mA. It is also required to reset the
device after a fault condition occurs. The input has an internal pull-up resistor and is
not active
when disconnected
. The switch connected to this input must be latching and have two stable
positions.
•
Emergency switch input
. When this input
is disconnected from ground
the device shuts
down the engine and turns off car power supply but it is still powered on itself. Normally closed
emergency switches should be connected to this input in series. The input has an internal pull-
up resistor and is
active when disconnected
. The switch for this input must be momentary with
normally closed configuration.
The device has one output used to kill the engine in case of emergency. This output is fully
programmable and can have VBat, GND or High-Z independently when active and not active. For the
system to work, engine must shut down when engine kill output is active. If the engine keeps running,
alternator will provide power supply to car installation. If current is drawn from kill output, GND -
High-Z combination is preferred for best performance on drained battery.
PLEASE NOTE OUTPUT
IS ONLY 3AMP SO CAN’T BE USED AS DIRECT FEED FOR IGNITION, CORRECT RELAY
NEED TO BE USED IF ISOLATOR IS NOT USED WITH POWER DISTRIBUTION DEVICE
