￭ Single-channel connection of activation switch
Note:
• Both STO inputs (IN1, IN2) must be connected to the activation switch. Otherwise, no SIL/PL classification
is given.
• Pay special attention to avoiding any potential failure modes for the wiring. For example, use shielded cable.
For measures for fault exclusion of wiring, see eg. EN ISO 13849-2:2012, table D.4.
Inverter unit1
Control unit2
Activation switchK
* "OUT1" with frame R5i
188 The Safe torque off function
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