Clutches and Brakes

EMP type controller

2x over-excitation

The EMP controller is a contactless controller used for electromagnetic clutches/brakes. It uses a 2x over-excitation method and a time lag circuit to achieve very stable operation even when high frequency and high precision is required. Additionally, it uses a fully contactless technique circuit configuration utilizing power transformers, yielding high performance and long operating life.

Dimensional outline drawing


RH1: Control to adjust the time lag from brake to clutch.
RH2: Control to adjust the time lag from clutch to brake.
RH3: Control to adjust over-excitation time (Both for clutch and brake)


SW1: Switch between 2 signals and single signal (ON: mono signal)
SW2: Switch between a voltage signal and non-voltage signal (ON: voltage signal)
SW3: Switch between alternating operation of clutch and brake or single operation (ON: single operation)


Model EMP-20DB EMP-70DB
Input voltage AC V 100/110, 200/220
Fuse capacity A 2 5
Output voltage DC V 24 24
Capacity (Normal load capacity) W 25 70
Circuit technique 2x over-excitation contactless
Rating Continuous
(variable by volume)
Over excitation time
10-80 (30 at shipping) 10-80 (50 at shipping)

Time lag (ms)

1-80 (20 at shipping) 1-80 (50 at shipping)
Structure Steel plate, wall mounting, protective enclosure
Weight Kg 1.6 3.4
Painting color Munsell 7.5BG6/1.5

Don't connect a varistor as a discharge circuit.

External connection diagram

1. PS terminal is for switching CL/MB by an external power source. See the operation manual for details.
2. Only current of several milliamps can be used for the external signal so ensure an appropriate input.


Information obtained from CAD data should be treated as reference only, except for the dimensions shown.
Please note that bolt and tap positions may change.

All information is subject to change without notice due to quality improvement or modification.


CAD Download