Lenze L-force Serie Montageanleitung Seite 67

Device−internal EMC filters have been implemented to reduce interference emission.
These EMC filters are connected to protective earth to discharge interference currents.
Under certain conditions the EMC filters must be disconnected from:
Operation in an IT system
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The devices are protected from damages or destruction due to incompatible
overvoltages in the case of an error (earth fault).
DC−bus operation
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Operation with power supply modules or regenerative power supply modules
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Operating multiple devices with a common filter
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The EMC properties can only be reached by carrying out the described measures.
The triggering behaviour of applicable earth−leakage circuit breakers remains
undisturbed.
Proceed as follows to disconnect the internal connection between the filters and PE:
Fig. 6−1
1. There is a screw above the X100 (+UG/−UG) terminals in the position "TT−TN".
2. Unscrew the screw and screw it in again at position "IT".
– Tightening torque: 3.4 Nm (30 lb−in)
3. There is a metal lug on the left in the device.
4. Unbolt the screws to remove the metal strap.
5. Unbolt the screw at position "IT" and insert the metal strap.
6. Tighten all screws.
– Tightening torque: 3.4 Nm (30 lb−in)
After this, the device is suitable for operation in IT systems.
EDK94SH104 DE/EN/FR/ES/IT 8.0
Wiring the device
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Important notes
94GG67IT67
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