Erstellt am: 14.07.2020
Erstellt durch: RT
Geändert am: 11.01.2021
Geändert durch:RT
ROTECH Antriebselemente GmbH
Tel.: +49(0) 7243-5931-0
http://www.rotech.de
Fax: +49(0) 7243-5931-31
E-Mail: [email protected]
Seite/sheet 5 von 6
Operating manual
Limit switch box type DRZ
Type of protection: flame proof enclosure
4. Mounting
You have to use cover screws with tightness class 8.8 as minimum.
Risk of injury
The electric components inside the box carry dangerous voltage.
Moreover there is a risk of bruise by some rotating parts.
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Do not open the housing while operating!
1. Bring the actuator to a completely „Open“ or „Close“ position.
Close:
Valve closed: Channel position is abreast the actuators longitudinal axis
Open:
Valve open: Channel position is towards the actuators axis
2. Equate the modules axis with the actuator.
3. Attach the box with bracket on the actuator and fix it.
4. Device must be switched to zero-potential. Unfasten cover screws and remove housing cover.
5. Device must be grounded. There is one external and one internal grounding connection.
6. Lead the system cable through the cable gland and wire it on the terminal block.
Please note the wiring diagram in the technical data sheet.
The wiring diagram can also be found inside the housing cover.
7. Refasten housing cover. Fastening torque of the cover screws: 3 Nm
You may use cover screws with material and tightness class A2-70 as minimum only.
8. Make sure that there is a sufficient mains lead cleat.
5. Adjusting switch-points
Ex factory the limit-switch-boxes are adjusted in the following way:
Switch-point close: Position valve/actuator at 0° to 3°
Switch-point open: Position valve/actuator at 87° to 90°
(Switch-points of other switches optionally)
If readjustment should be necessary proceed as following:
1. Device must be switched to zero-potential. Unfasten cover screws and remove housing cover.
2. Depending on the type of proximity switch, the limit switch boxes are equipped with different activators.
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Actuation with switch cams or switch plates:
Push down the exterior ring of the switch cam of the sensor, which has to be readjusted. Turn the switch cam until the
designated position has been reached. By disengaging the switch cam, it snaps into place again.
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Actuation with damping flag:
Loosen the Hexagon socket head cap screw between the sensors. Now turn the switch cam underneath the sensors until the
switch flag in its end position damps the sensors.
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Actuation with switch flag:
Unscrew the fastening nuts and move the sensor forward or backward until the designated switch point has been reached.
The switch flag may not contact the front side of the sensor!
3. Proceed similarly with other switch-points.
4. Refasten housing cover (fastening torque of the screws tightness class min. 8.8: 3 Nm)
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!
WARNING
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