Operating Instructions – MOVITRAC® B
31
4
Installation notes for basic unit – electrical aspects
Installation
2. Remove the two screws [A] securing the circuit board.
3. Install the screws in the plastic insulations provided for this purpose [B].
4. Fasten screws to the unit [C].
5. Close the unit.
6. Attach the sticker provided to the unit.
Deactivating the EMC capacitors stops earth-leakage currents from flowing over the
EMC capacitors.
• Ensure that the earth-leakage currents are essentially only determined by the level
of the DC link voltage, the PWM frequency, the motor cable used, its length and the
motor in use.
When the suppression capacitors are deactivated, the EMC filter is no longer active.
4.2.8
Separate cable ducts
• Route power cables and electronics cables in separate cable ducts.
4.2.9
Operation on IT systems
• SEW recommends using insulation monitoring devices with pulse code measuring in
network systems with a non-grounded star point (IT systems). Use of such devices
prevents the earth-leakage monitor mis-tripping due to the earth capacitance of the
inverter.
25372555
[A]
[A]
[B]
[C]
[C]
Summary of Contents for Movitrac B
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