PG DRIVES TECHNOLOGY AC TRACTION – INSTALLATION
Pin 6 – CAN H
CAN High communications line to the Programming Device, Display or other Controller(s).
Pin 7 – +12V Supply
A 12V supply. The maximum supply current is 20mA from this pin.
Pin 8 – 0V
A 0V supply for the Programming Device or Display.
6.6 Connector ‘C’ – Motor Feedback (6-way)
Pin 1 – Encoder Speed (A)
Connect to the speed signal of the motor encoder.
Pin 2 – Encoder Direction (B)
Connect to the direction signal of the motor encoder.
The motor encoder is normally a ‘Quadrature’ type, which has 2 outputs, ‘A’ and ‘B’. Both outputs
produce a symmetrical square wave, with A leading B by 90°. These outputs can be used to
deduce both the direction and speed of the motor. If A is ‘high’ when B is ‘low’, the motor is
rotating forwards and conversely, if A is low when B is high, the motor is rotating in reverse.
Traditionally, Channel A is referred to as the speed signal, indicating the number of pulses per
second, whilst Channel B is normally referred to as the Direction signal, indicating motor forward
or reverse.
Pin 3 – Remote LED or Brake Light
The function of this output is set by the programmable parameter, 3.16 Remote LED / Brake Light.
If set to 0, then this output may be used to drive a remote LED, which can function as an external fault indicator.
If set to 1, then this output may be used to drive a brake light. The brake light will only be active during Footbraking.
An external ‘driver module’ must be connected to operate either an LED or Brake Light.
Pin 4 – Thermistor or Steering Potentiometer
The function of this input is set by the programmable parameter, 3.15 Single / Dual Motor Select, in the Controller Set-up
menu.
If set to 0 (Motor Temperature), then this input can be connected to an external thermistor, typically on the motor, which
can be used to reduce controller current output with respect to temperature. The type of thermistor is set by the
parameter, 3.13 Motor Temperature Sensor Type. Once the correct sensor type has been set, the parameter, 4.1 Motor
Temperature Cutback, can then be used to set the temperature at which current foldback will begin. In addition to the
thermistor, a 2.2kΩ 0.25W ‘pull-up’ resistor should be connected between this pin and a 5V supply – a convenient
connection point can be found on pin 16 of Connector A.
If set to either 1 (Dual Motor Left) or 2 (Dual Motor Right), then this input can be connected to a 3-wire 5kΩ potentiometer
that measures the steering angle of the vehicle. Refer to the Wiring Guidance diagram for connection details.
SK79646-01 23
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