KBi KSM, Installation & Operation Manual

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4.3 General Wiring Installation Procedure
Theory of Operation, Explaining how the KSM Module Works:
Once installed and wired properly, the LED on the end-faceplate of the KSM will be
illuminated green whenever the KSM contactor relay is closed. When the LED is illuminated,
the contactor is closed; the KAPower Module is running parallel with the vehicle, vessel, or
equipment batteries and electrical system.
Depressing the DPST switch closes the contactor inside the KSM enclosure, using power
from the KAPower module, regardless of the state of charge of the vehicle or equipment’s
batteries. Depressing the DPST switch also engages the cranking motor circuit, just as if the
key switch to the crank/start position had been turned, or the vehicle’s or vessel’s start button
(if so equipped) had been pressed. The DPST switch is wired in parallel with the existing
starting system. This is done by wiring and using the recommended electrical circuit,
displayed on the schematics in Figure 5 (page 14), Figure 6 (page 16), or Figure 7 (page 17).
This creates a parallel circuit with the OEM (Original Equipment Manufacturer) electrical
circuit, allowing both the KSM and the OEM cranking motor circuit to be engaged,
simultaneously. Once the engine starts, the Programmable Logic Controller (PLC) inside the
KSM monitors the condition of the KAPower Module, and will close or open the contactor
relay inside the KSM, based on the preprogrammed parameters inside the PLC. When the
engine is stopped, the equipment is turned off. The contactor opens and the KAPower
module remains isolated, waiting for the next engine-starting event, when the DPST switch is
pressed.
The PLC Pre-programmed Functions:
The PLC has been preprogrammed to monitor and control the state-of-charge of the
KAPower capacitor module based on temperature, voltage, and time. Once a voltage signal
is received at pin four (4) of the Wiring Interface Connector, the PLC “wakes-up” and will
determine when and how long to keep the contactor closed. Anytime the LED Status
Indicator is illuminated, the contactor is closed. In a typical engine-starting event, the LED will
illuminate during engine cranking, and then go out for several seconds after the engine has
started. The LED will then illuminate again, and could remain illuminated for several seconds
based on the condition of the KAPower module. The LED may even begin to “cycle”
depending on the vehicle/vessel, or system voltage during the recharging events.
The J1939 connector is used for KBI factory programing only. Contact KBI for details.