Data Sheet

MCP2xxx Dual Channel Motor Controller Data Sheet

Contactors, Relays and Solenoids

As a safety precaution an external power disconnect device should be used. A discconect such as a contactor, relay or solenoid

with the proper ratings for the planned load. The disconnect devices contacts should be rated for the total current output of both

motor channels combined. The disconnect device can be controlled by the DOUT pins or a simple manual switch. The DOUT pins

are designed to control inductive loads. They can be toggled by users programs. The wiring diagram below illustrates a basic wire

scheme using a relay as a disconnect for the main power. The DOUT controls the ground to the relay coil. The positive terminal of

the relay coil can be connected several ways depending on its rated voltage. The diagram below shows a 12VDC logic battery and

a 12VDC Rleay. If the relay coil is 5VDC the regulated user output (BEC) could be used instead. The main battery can also be the

power source provided a logic battery is present.

Battery

Motor 1

Motor 2

M1A

M1B

M2B

M2A

B-

B+

MCP

Logic

Battery

RY1

SW2

LB+

GND

LB+

DOUT