PSR-CT
PHOENIX CONTACT
108366_en_01
4
Electrical connection
You have the following options when connecting the safety switch:
–
Stand-alone operation
–
Series connection
For the simple connection, different
Y distributors
and a
dummy plug
are available.
See Section “Ordering data” on page 63.
4.1
Connection notes
Qualified personnel
Electrical connection may only be performed by qualified personnel.
When using a single safety switch or a switch chain, please refer to Section “Application
WARNING: Risk due to unexpected machine startup or electric shock
Unexpected machine startup or electric shock may result in death or serious injury.
•
Make sure that the machine is disconnected from the power and remains discon-
nected from the power.
•
Make sure that the dangerous machine function is switched off and remains switched
off.
WARNING: Loss of safety function due to incorrect connection
In order to guarantee the safety function, observe the following points when connecting
the safety switch:
•
Always evaluate both safety outputs.
•
Do not use the signal outputs as safety outputs.
CAUTION: Damage to equipment or malfunction due to incorrect connection
Observe the following points when connecting the safety switch:
The safety outputs generate their own test pulses when switched on and switched off.
•
Do not use a controller with clocking, or switch off the clocking of the controller.
•
Make sure that a downstream controller can tolerate the test pulses of the safety
switch.
•
Please note: the test pulses of the safety switch can lead to temporary switching oper-
ations, depending on the inertia of the downstream device (relay, controller, etc.).
When switched on, the safety outputs provide a +24 V level.
•
Use downstream evaluation devices with pulse-switching inputs.
Observe the information in the section on safety regulations and installation
notes.