Drehmo D 30 - Page 30

Commissioning
30
Figure21: Electronic position transmitter
Setting screw for
amplification
The setting screw cannot be used to set the signal in position CLOSED (4mA) since
the screw only has an impact on the amplification of the electronic position transmitter.
4mA have been set in the factory.
In case of repair: In case of an explosion-proof actuator, the potentiometer and the
measuring amplifier for the analogue position signal must always be replaced by the
respective component in explosion-proof version.
It is imperative to heed the valid regulations for setting up intrinsically safe circuits!
Figure22: Electronic position transmitter B3 (EM5.005) and potentiometer in explosion-proof
version
Figure23: Electronic position transmitter B3 (EM7.005) in explosion-proof version
[1]
[2]
[1] Setting screw for zero point [2] Setting screw for amplification
Connection type 2-wire technology: Current end value 20mA
Connection type 3-wire and 4-wire technology: Current end value 24mA or 20mA (for
the specification refer to supplementary operation instructions DREHMO EM5.00x
electronic position transmitter or DREHMO EM7.005 electronic position transmitter). If
the setting was not satisfactory, reset the limit sensor setting to the factory setting and
repeat the above setting procedure. The factory settings are restored by:
• Screw in yellow transit screw to the stop.
• Operate the actuator to the end position CLOSED defined at the beginning.