Lenze EVF9333 - Manual (Page 202)

Electrical installation
Control terminals
Device variant with "Safe torque off" function
5
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202 EDKVF9333V DE/EN/FR 7.1
5.8.3 Device variant with "Safe torque off" function
Safety instructions for the installation of the "Safe torque off" function
ƒ The installation and commissioning of the Safe torque off" function must be
carried out by skilled personnel only.
ƒ All safety−relevant cables (e.g. control cable for the safety relay, feedback contact)
outside the control cabinet must be protected, for instance by a cable duct. Short
circuits between the single cables must be ruled out!
ƒ Wiring of the safety relay K
SR
with insulated wire end ferrules or rigid cables is
absolutely vital.
ƒ The electrical reference point for the coil of the safety relay K
SR
must be connected
with the protective conductor system (DIN EN 60204−1 paragraph 9.4.3). Only this
measure guarantees that the operation is protected against earth faults.