Controlling the safety functions
5.2 Control of "STO" and "SS1" via terminal module for option K82
Safety Integrated
44 Function Manual, 08/2023, A5E03264275A
Customer interface -X41
Table 5- 3 Terminal strip -X41
Connection for actuating element at channel 1 "+"
Connection for actuating element at channel 1 "+", for
interconnecting Motor Modules in groups
Control of -K41:A2, -K42:A2, N conductor or ground
Connection of reference potential for actuating ele-
ments at channel 1 and channel 2
Connection of reference potential for actuating ele-
ments at channel 1 and channel 2, for interconnecting
Connection for actuating element at channel 2 "+"
Connection for actuating element at channel 2 "+", for
interconnecting Motor Modules in groups
Output -K41: Permanently wired with
CU320-2: -X132:4 (DI 7)
Output -K41: For connecting to a digital input accord-
ing to the Safety settings on the CU320-2 (already
Control circuit:
Rated voltage: 24 V DC/AC (0.85 … 1.25 x U
Rated)
Max. cable length (applies to the sum of the outgoing and return lines):
• 24 V DC (min. cross-section, 0.75 mm²): 1000 m
• 24 V AC (cable capacitance: 300 pF/m): 500 m
The value applies for 50 Hz; at 60 Hz, the cable lengths must be reduced by 20 %.
Danger to life as a result of exceeding the permissible cable lengths and/or the
permissible cable capacitances
When the permissible cable lengths and/or the permissible cable capacitances are exceeded,
the relay can remain energized as a result of the coupling capacitances of the cable and the
associated residual current, in spite of the fact that the actuating elements are open. Death
and serious injury can result in the event of an error.
• Do not exceed the maximum permissible cable lengths and cable capacitances.
Max. connectable cross-section: 2.5 mm²
Fuse: Max. 4 A
Installation altitude: up to 4000 m for overvoltage category II according to IEC 61800-5-1
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