Lenze i950 Montage- Und Einschaltanleitung Seite 105

Protection of the machine/system
Drives can reach dangerous overspeeds.
• E. g. by setting high output frequencies in connection with motors and machines not suitable for this
purpose.
• The inverters do not provide protection against such operating conditions. For this purpose, use
additional 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 functions are activated.
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°).
NOTICE
High input voltage at the device.
Destruction of the device.
▶ Observe maximum permissible input voltage.
▶ Fuse device at the input against too high input voltage.
NOTICE
Short circuit at the device due to electrostatic discharge.
Destruction of the device.
▶ The personnel must be free of electrostatic charge prior to working on the device.
Safety instructions
Residual hazards
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