Pilz PSEN op4B-S-3-080 - Manual (Page 27)

Operating Manual PSEN op4B Series
23
Fig. 16
• Earthing: If evaluation devices
are connected without safe
separation, the safety light
curtain must be operated in
protection class 1. In this case,
the emitter and receiver must
be labelled with the protective
earth symbol and must be
earthed via the fastening kit.
Both are supplied with the unit.
Assembling the fastening kit:
- Insert the slot nut (M4 x 0.7
mm tapped holes) into a
groove on the safety light
curtain.
- Screw the two threaded pins
(M4 x 14) into the external
tapped holes.
- Fix the screws firmly in place
so that the cupped point on the threaded pin pierces the coating.
This way contact will be made with the metal housing.
- To prevent the threaded pin from working loose under heavy
vibration, attach two self-locking M4 nuts to the threaded pins.
Use a hexagonal wrench CH.7.
- Attach the earth lead to the middle tapped hole using the lock
washer (M4) and screw (M4).