EN
31
4 . Electrical connection
4 .1 General notes for electrical connection
The electrical connection should only be performed in a de-energized state by authorized
skilled personnel. The safety outputs can be used directly for wiring in the safety-relevant
part of the user control. For requirements in PLe/category 4 according to EN ISO 13849-1,
the safety outputs of the safety sensor or the sensor chain are to be evaluated with the
same category.
Note
To ensure safety, both safety outputs Pin 2 (X1) and Pin 4 (X1) must always
be evaluated. Since the diagnosis output Serial OUT Pin 7 (X1) and Pin 8 (X1)
is not a safety output, it must not be used for safety-related signaling and
control functions.
4 .2 Requirements for a safety evaluation unit
Two-channel safety input, suitable for p-switching sensors with normally open function.
Possible evaluation units:
• SSP Safety Simplifier
• SSP safety relay series S2, T2, X2
• ReeR MOSAIC M1
If the process lock with safety function is linked to a relay or non-safe control components,
a new risk assessment must be carried out. The process lock with safety function tests its
safety outputs by test pulses, a cyclic switch-off of the outputs. A cross-circuit detection in the
evaluation unit is therefore not necessary. The test pulses of the outputs must be tolerated
by the evaluation unit. The length of the test pulses are additionally extended depending
on the cable length and the capacity of the cable used.
4 .3 Safety controller configuration
The two safety outputs Pin 2 (X1) and Pin 4 (X1) can be connected to the inputs of a safety
control unit under the conditions that follow:
• The input must be suitable for clocked safety signals (OSSD signals).
• The device generates its own test pulses on the safety outputs.
• A downstream control unit must tolerate these test pulses, which can have a length
of up to 0.3 ms.
• Do not use a control unit with test pulses or switch off the test pulses of your control unit.