Nord Drivesystems SK 510P - Page 26

Functional Safety – Supplementary manual for series SK 500P
26 BU 0630 en-2020
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SK 510P, SK 540P SK30P, SK 550P with SK CU5-STO or SK
CU5-MLT
Safety output on
protective device
Shielded
cables
1)
Frequency
inverter
Safety output on
protective device
Shielded
cables
1)
Frequency
inverter
Use of Safe Pulse
Block
Use of Safe
Pulse Block
Monitored outputs without
cross-circuit detection
Output 1
Output 2
or
Output 1
Output 2
Output 3
or
Output 1
Output 2
Monitored outputs with cross
-
circuit detection
Output 1
Output 2
1)
Shielded cables to exclude faults as per DIN EN ISO 13849-2
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Other measures (separate cable duct, installation in armoured conduit, etc.) are possible. More
precise details result from the risk assessment and the FMEA for the specific application.
For the Safe Pulse Block it is also conceivable that this could be triggered via two safety outputs, one
switching the 24 V output and the other one switching the GND output. For restrictions, refer to 2.2.1
"Safe Pulse Block"