Residual Hazards; Motor Protection - Lenze L-force 9400 Instrucciones Para El Montaje

Waste disposal
Recycle metal and plastic materials. Assembled PCBs must be disposed of professionally.
The product−specific safety and application notes given in these instructions must be
observed!
3.2

Residual hazards

Protection of persons
Before working on the controller, check if no voltage is applied to the power
ƒ
terminals because
– because the power terminals U, V, W, +UG, −UG, Rb1 and Rb2 carry hazardous
voltages for up to 30 minutes after power−off depending on the device.
– the power terminals L1, L2, L3; U, V, W, +UG, −UG, Rb1 and Rb2 carry hazardous
voltages when the motor is stopped.
Device protection
Plug on or pull off all pluggable terminals only in deenergised condition!
ƒ
Detach the controllers only in deenergised conditions from their installation
ƒ
backplanes or the back panel of the control cabinet!
Cyclic switching on and off of the mains voltage can overload and destroy the input
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current limitation of the controller:
– Cyclic mains switching of 5−times in 5 minutes is permissible without restrictions.

Motor protection

Depending on the controller settings, the connected motor can be overheated by:
ƒ
– For instance, longer DC−braking operations.
– Longer operation of self−ventilated motors at low speed.
Protection of the machine/system
Drives can reach dangerous overspeeds (e.g. setting of high output frequencies in
ƒ
connection with motors and machines unsuitable for such conditions):
– The controllers do not offer any protection against such operating conditions. Use
additional components for this purpose.
EDK94ASH24 DE/EN/FR/ES/IT 8.0
Safety instructions
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Residual hazards
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