Lenze I51AE175F - Page 11

Protecon of the machine/system
Drives can reach dangerous overspeeds.
•
E. g. by seng high output frequencies in connecon with motors and machines not suitable for this
purpose.
•
The inverters do not provide protecon against such operang condions. For this purpose, use
addional components.
Switch contactors in the motor cable only if the controller is inhibited.
•
Switching while the inverter is enabled is only permissible if no monitoring funcons are acvated.
Motor
If there is a short circuit of two power transistors, a residual movement of up to 180°/number of pole pairs
can occur at the motor! (e. g. 4-pole motor: residual movement max. 180°/2 = 90°).
Safety instrucons
Residual hazards
11