Lenze EVF9333−xV - Manual (Page 153)

Wiring of the standard device
Control terminals
Device variant with "Safe torque off" function
5
5.8
5.8.4
l
5.8−5 EDSVF9333V EN 6.2−04/2012
5.8.4 Device variant with "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.
I
Tip!
A complete description can be found in the chapter "Safe torque
off".
Safety instructions for the
installation of the "Safe
torque off" function