PIN I/O Descriptions

Sevcon Motor Controller

link to old documentation

NOTE: Digital signals are ACTIVE LOW.  Logic Level of the Controller is Vdd (12V)

• Throttle: pin 22
  • Analog signal ranging 0 → Vdd of the MC power rails
• Forward: pin 18
  • Digital signal setting the kart in the forward motion state
• Reverse: pin 30
  • Digital signal setting the kart in the reverse motion state
• FS1/FSW: pin 19
  • Digital signal to enable kart motion

Operation Instructions

1. When turning motor on FS1, Reverse, Forward, and Throttle need to all be OFF (0V for Throttle, 3.3 V for the rest)

2. If you see two flashing green lights on the motor controller, then it is probably a system fault where you need to reset the FS1 switch and make sure the Forward and Reverse pins are OFF (3.3V)

3. You should see a steady green light on the controller if there are no faults

4. To test the motor, turn ON the Forward and FS1 switch by grounding them, then slowly increase the throttle voltage. At around 0.8-0.9V the motor should start to spin.

Clearpath Servo Motor (Steering)

link to old documentation

NOTE: The Logic Level of the device is designed for use with 5-24VDC logic levels and pulses.  We will use 12 volts from the DCDC.

• Enable Input: (+ → pin 4, - → pin 8)
  • Asserting this input energizes the motor shaft.
• Input A: (+ → pin 3, - → pin 7)
  • Asserting this input will make ClearPath continue to servo to its current position regardless of any changes to the frequency on Input B. Alternatively, this signal can be used as a home sensor input.
• Input B : (+ → pin 2, - → pin 6)
  • This input is connected to a digital PWM signal whose frequency represents the desired position.
• HLFB Output: (+ → pin 1, - → pin 5)
  • See HLFB section for available modes.
  • Only valid for torque mode configuration

Progressive Automations PA-14 Linear Actuator

• M+: pin 1

• M-: pin 2

Switching the polarity of the connections will extend/retract the actuator