Simga2N Traction Advanced Manual– V1.3 Page 13 (166) ©2021 DMC GmbH Herten Germany
3.1 Light wiring
The controller may be supplied as a stand-alone unit or pre-wired onto a base-plate with contactors etc.
Control wiring connections should be made using 0.56mm² (AWG#20) or equivalent stranded wire. The correct pressure
release crimping tools MUST be used for long term connection reliability.
The main battery cable should be fused with a suitable air-break fuse. The key switch line must also be fused at a level
not exceeding 10 A.
The return wiring for the accelerators should be connected to pin A10 on the controller to guarantee wire off detection.
Avoid routing the sensor cabling along with high power motor or battery cables.
Special care should be taken when connecting the screen of the motor speed sensor cable. Be sure only to connect the
screen on the controller side @ pin A31). When connected also to the motor side, battery current will flow over the
screen, disturbing the signal from the sensor to the controller, this can result in dangerous situations.
The Sigma2 controller is equipped with a 35-way AMPSEAL connector (connector A) used to carry the input/output
signal. The plug housing is an AMP p/n 776164-1 and the contactor pins are AMP p/n 770520-3. The AMPSEAL connector
will accept wires within the range 1.7 to 2.7 mm.
The AMPSEAL connector holds the functions for interfacing with the vehicle, the CAN communication and the motor
feedback signals. The signals, associated to the pins of the connector, are digital inputs, analog inputs, communication
inputs and digital outputs
In this section the functions and features associated to each pin of the AMPSEAL 35-way connector, used for the
controller light wiring will be described in details.
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