the cables from the current transformers not
are marked, mark them with and 3.
9.
Disconnect the cables the HV-Board from
the thyristors and fans.
3. Discharge the tools and yourselfby touching
earth (if you are not earthed).
5.Step step
1.
4. Don’t lose the
connector between HV-Board and LV-
Board.
10.
7. Disconnect the cables from terminals 1L1,
3L2, and 5L3 (main voltage).
8.
6.
2. Remove the five screws. Remove the old HV-Board.
If the Softstarter shall upgrade Torque
Control step 9. Before disconnecting the cables mark them. Remove the front cover (four screws). Remove the six screws.
If only the HV-Board will changed to
step 21. the cables from the thyristors not are
marked, mark them with and 3.
Disconnect the cables the LV-Board from
the thermal switch and current transformers.
-. Disconnect all cables from the terminals 1to
20, external keypad, “Analogue Out/PTC”
sensor and the Fieldbus plug
