Electromen - EM-180

EM-180 is developed for controlled ON-OFF driving and direction change of a DC-motor with

brushes. Driver has advanced current limit features. It limits the motor current in start-up and jamsituations

and that way protects the motor and mechanics from over torque. Driver has also an error

output to indicate error / over current situations.

The acceleration ramp time for start-up is adjustable to suit each application. In other word the motor

voltage is slowly rised to give a smooth start-up. As the control is set off, the motor is dynamically

braked with so called short-circuit braking. The motor poles are connected together. The reverse

and forward commands can be set with positive or negative control. The freewheel command sets

motor run free. Freewheel overrides forward and backwards commands.

The current protection is double acting. First there is a continuous and adjustable current limit which

decreases the motor voltage if the current exceeds the adjusted value. Second there is settable trip

feature that cuts the motor voltage if the current limit value is exceeded (after trip delay 2ms). After

trip the motor starts only to the opposite direction. Additionally the driver doubles the adjusted

current value for 0.3 seconds in start-up to ensure sufficient power to overcome the start-up friction.

FEATURES:

• Fast change of direction

• Soft start-up, acceleration ramp

• Settable current limit

• Trip or continuous current limit

• High efficiency

• Dynamic braking

• High momentary load capacity

• Rail base fittable

• Freewheel option

• Two control modes