Sensors or Limit Switches for final
and intermediate positions
Electro-mechanical actuators must not be advanced to their mechanical end position but rather stopped by way of a control (converter, contactor) when the limit switch is reached.
All RACO electric actuators type 1 and type 6 as well as the rotary actuator series type DM4 can be equipped with following end- and intermediate position signal swichtes:
- Electronic Position Sensor type EPS 02 with 2 relais outputs (closing switches) and temperature switch control
- Electronic Position Sensor type EPS 04 with 4 relais outputs (closing switches) and temperature switch control
- Electronic Position Sensor type EPS 06 with 2 relais outputs (closing switches) aplus 4 digital outputs, 1 analog output, temperature switch control and rpm monitoring
- Gearbox equipped with max. 6 mechanical limit switches for end- and intermediate position signaling optional with Potentiometer or DMU.
Moreover, magnetic-inductive sensors (proximity switches) are available for the linear drives and electric actuators of the COMPACT series.
With end-position switch-off or in-between stops it is important whether sensors can be over-run on account of over-travel or switching lug length. The over-run can be reduced with a retaining brake (circuited on the alternating or direct current side).
A converter in connection with a brake chopper ensures controlled braking of a actuator by way of a ramp. This not only guarantees much safer operation but also significantly lengthens the service life of the actuator.
| Last update: 01-25-2012 sbl |  |
  |
© 2011 RACO ELEKTRO-MASCHINEN GMBH, Schwelm All rights reserved. legal notice |