Safety instructions
Residual hazards
2
18
EDS84DG752 EN 5.0
2.3 Residual hazards
Protection of persons
ƒ Switch off mains voltage before removing the controller (Drive Unit).
ƒ Before working on the controller, check if no voltage is applied to t he power
terminals because
– depending on the device - the power terminals U, V, W, Rb1, Rb2, T1 and T2 remain
live for at least 3 minutes after disconnecting the mains.
– the power t erminals L1, L2, L3; U, V, W, Rb1, Rb2, T1 and T2 remain live when the
motor is stopped.
Device protection
ƒ Connect/disconnect all pluggable terminals only in deenergised condition!
ƒ Detach the controllers from the installation, e.g. from the motor or mounting wall,
only in deenergised condition!
Motor protection
ƒ With some settings of the controller, the connected motor can be overheated.
– E.g. longer operation of the DC injection brake.
– Longer operation of self-ventilated motors at low speed.
– Wrong frequency or voltage settings in the motor parameters (especially with
120 Hz motors).
Protection of the machine/system
ƒ Drives can reach dangerous overspeeds (e.g. setting of high output frequencies in
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.
Warning by symbols
Icon Description
Long discharge time:
All power terminals remain live for up to 3 minutes after mains disconnection!
High leakage current:
Carry out fixed installation and PE connection in accordance with EN 61800-5-1!
Electrostatic sensitive devices:
Before working on the device, the staff must ensure to be free of electrostatic charge!
Hot surface:
Use personal protective equipment or wait until devices have cooled down!
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