5 | Installation
90
D-R 290
identified as the isolation switch for the device. The individual conductors of the mains
power supply cable must be mutually secured in such a way that they cannot touch
neighbouring terminals whilst being disconnected (e.g. using cable ties).
If monitoring and control of the fail-safe shutter is performed via the measuring head,
the plug end of the 8-core cable already installed should be plugged into the respec
tive panel jack in the measuring head. The free end of the cable is connected to the
respective terminals in the control device of the protective device (D
−SK AE)
(
Fig. 5.23 ).
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