User Manual

MCP Series

Brushed DC Motor Controllers

MCP Series User Manual

1.7 Regenerative Voltage Clamping

1.7.1 Voltage Clamp

When using power supplies regenerative voltage spikes will need to be dissipated. A power

resistor in the range of 10 Ohms at 50 watts for small motors and down to 1 Ohms or lower

for larger motors may be required. 50 watts will likely cover most situations however smaller

wattage resistor may also work depending on the application. The regenerative energy will be

dissipated as heat.

1.7.2 Simple Voltage Clamp Setup

When using DOUT pins as a direct voltage clamp, the total power dissipated cannot exceed the

3A at 40VDC limit of the DOUT pins. The DOUT pins can be double up to increase the current

capacity. The maximum rate voltage of 40VDC will not change. To use the DOUT pins as a direct

voltage clamp set the specic DOUT pin action to "Over Voltage" to activate on an Over Voltage

using Ion Studio.

Motor 1

M1A

M1B

Motor 2

M2B

M2A

MCP

B-

B+

SW1

DOUT

B+

Main

DC Power