Softstart Upgrade to Torque control PST30…300 PSTB370…1050 1SFC132040M0201 RevA Dec-06 Contents 1. ESD Warning........................2 2. Tools..........................2 3. PCB information ......................2 4. Step by step........................3 5. Configuration of the LV board..................7...
(about 100V). We kindly ask you to pay notice to this, as this is a vital point in order to ensure the life span of the product. 2. Tools Torx T15 for removing the Cover from PST30 … PST72 Torx T20 for removing the Printed Circuit Board. for removing the Cover from PST85…PST300 and PSTB370…PSTB1050 3.
4. Step by step 1. Before disconnecting the cables mark them. 2. Disconnect the cables from terminals 1L1, 3L2, and 5L3 (main voltage). 3. Disconnect all cables from the terminals 1 to 20, external keypad, PTC sensor and the Fieldbus plug. 4.
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11. Remove the old LV-Board and disconnect the cables from the Display and the Keypad. 12. On PSTB unit remove the cables from the built in by-pass contactor after marking them. 13. Mount the cables from the Display and the Keypad on the new LV-Board.
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16. Mount the new HV-Board with the five screws. 17. Mount the cables from the thermal switch and current transformers on the LV-Board. Be careful how you connect the cables from the current transformers (correct phase sequence). 18. Mount the cables from the thyristors and fans on the HV-Board.
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22. Mount the front cover (four screws). 23. Connect all cables to terminal 1 to 20, external keypad, PTC sensor, Fieldbusplug and the cables to 1L1, 3L2 and 5L3. - 6 -...
5. Configuration of the LV board If only the HV board is changed, the softstarter is ready to start. If the LV board is changed, a programming of this must be done before the softstarter can be taken in operation. Every softstarter size has its own parameter values for the LV board according to table 1 or 2 that must be used.