Electrical installation
Important notes
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83
EDS84ASC552 EN 6.0
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Overvoltage at devices with 230−V mains connection
An impermissible overvoltage may occur if the central supply of the N
conductor is interrupted if the devices are connected to a TN three−phase
system.
Possible consequences:
ƒ
Destruction of the device
Protective measures:
ƒ
Provide for the use of isolating transformers.
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The drive controller contains electrostatically sensitive components.
The personnel must be free of electrostatic charge when carrying out assembly
and service operations.
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Pluggable terminal strips
Plugging or removing the terminal strips during operation can cause high
voltages and arcing.
Possible consequences:
ƒ
Damage of the devices
Protective measures:
ƒ
Switch off device.
ƒ
Only plug or remove the terminal strips in deenergised status.
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Use of RFI filters in IT systems
The controllers must not be operated with mains filters and RFI filters from
Lenze because these filters contain components connected to PE.
Possible consequences:
ƒ
The filters may be destroyed when an earth fault occurs.
ƒ
Monitoring of the IT system may be triggered.
Protective measures:
ƒ
Do not use RFI filters from Lenze in IT systems.
ƒ
Before using the controller in IT systems, loosen the two contact screws for
interference suppression (on the supply side and on the motor side).
efesotomasyon.com - Lenze
