Data Sheet

8 SDC3260 Motor Controller Datasheet Version 1.3 January 23, 2018

113

14 25

Pot 1

RS232

Ground

TxOut

RxIn

Motor Brake 1

Motor Brake 2

Contactor

Pot 2

RC Ch2RC Ch1

FIGURE 6. Factory Default Pin Assignments

Enabling Analog Commands

For safety reasons, the Analog command mode is disabled by default. To enable the An-

alog mode, use the PC utility and set Analog in Command Priority 2 or 3 (leave Serial as

priority 1). Note that by default the additional securities are enabled and will prevent the

motor from starting unless the potentiometer is centered, or if the voltage is below 0.25V

or above 4.75V. The drawing shows suggested assignment of Pot 1 to ANA1 and Pot 2 to

ANA4. Use the PC utility to enable and assign analog inputs.

USB communication

Use USB only for conﬁguration, monitoring and troubleshooting the controller. USB is not

a reliable communication method when used in electrically noisy environments. Further,

communication will not always recover after it is lost without unplugging and replugging

the connector, or restarting the controller. RS232 communication is always preferred

when interfacing to a computer. USB and CAN will operate at the same time on the

SDC3260. Connecting to a com puter via the USB will not disable the CAN interface.

RS485 Communication

RS485 is an industry standard for deﬁning serial communication. Due to its balanced sig-

naling, RS485 is effective over distances, even if other electrical signals are present. Its

stability makes it well suited for connecting multiple receivers to a single network.

You can operate RS485 in half-duplex mode and it is well suited for use with the Modbus

protocol. On the 25-pin connector, 2-pins are pins are present.