Data Sheet

4 RGDC18xx Motor Controller Datasheet Version 1.5 January 17, 2018

Important Warning

Carefully follow the wiring instructions provided in the Power Connection section of the User Manual. The

information on this datasheet is only a summary.

Mandatory Connections

It is imperative that the controller is connected as shown Figure 2, above, in order to ensure a safe and trou-

ble-free operation. All connections shown as thick black lines line are mandatory. The controller must be pow-

ered On/Off using switch SW1on the Power Control input.

Emergency Switch or Contactor

The battery must be connected in permanence to the controller’s B+ terminal via a high-power emergency

switch or contactor as additional safety measure. The user must be able to deactivate the switch or contactor at

any time, independently of the controller state.

Precautions and Optional Connections

Note 1: The power control (pin 25 on DSUb connector) must be grounded to turn off the controller. Floating the

power control or connecting it to a battery will turn on the internal logic.

Note 2: A separate power supply may be used to power the controller’s internal logic to keep the controller alive

in case of voltage drop at the main battery because of motor load. Voltage on Power Control pin must not

exceed 50V Max. Make sure you correctly identiﬁed pin 25 before applying voltage to it.

Note 3: Use precharge 1K, 0.5W Resistor to prevent switch arcing.

Note 4: Beware not to create a path from the ground pins on the I/O connector and the battery minus

terminal.

Controller Mounting

During motor operation, the controller will generate heat that must be dissipated. The published amps rating

can only be fully achieved if adequate cooling is provided. Good conduction cooling can be achieved by mount-

ing the controller to a metallic surface, such as the chassis, cabinet, etc.

Sensor and Commands Connection

Connection to RC Radio, Microcomputer, Potentiometer, encoders and other low current sensors and actua-

tors is done via the 25-pin DSub connectors and the 8-bit circular connector located at the top of the controller.

The functions of many pins vary depending on controller conﬁguration. Use mating connector Conxall/Switch-

craft model 6282-8SG-3DC, or equivalent. The pin assignments are found in the Tables 1 and 2, below.

Top view

Use mating connector

Conxall/Switchcraft

6282-8SG-3DC

FIGURE 3. Circular Connector Pin Locations