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Not for new design see product EM-180A

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. Error output indicates the activation of the current limit.



Technical data

Supply 2-32Vdc
Over voltage protection 40V
Idle current app. 30mA
Driving current 10A continuous
  15A 50/50%
Current limit 1...15A
  2...30A in start-up
Current trip delay n. 2ms
Start delay 5ms
Stop delay 5ms
Direction change time n. 20ms
Voltage loss 0.5V ( Im=10A )
Operating frequency 500Hz
Ramp 0.10, 20, 40, 80 150ms
  0.25, 0.5, 1s
Digital inputs  
OFF Uin 4 -30V or open
ON Uin 0-1V
Error output max 30V 50mA
Operating temp (Ta) -20...+70ºC
Measures 43x73x35mm
Weight app. 80g

Product files

Product not available for online order.