3 Service PSTX720...840
3.1 Introduction
3.1.1 Earth the Softstarter 18
3.1.2 How to access service parameters 18
3.2 Configuring the HMI
3.2.1 Update Firmware 19
3.2.2 Set the ID 19
3.2.3 Reset to factory defaults 20
3.3 Change the HMI, Disconnect/Connect the main power cables and
the control cables
3.3.1 Remove the HMI 22
3.3.2 Place the new HMI 22
3.3.3 Disconnect the main power cables and the control cables 23
3.3.4 Connect the main power cables and the control cables 24
3.4 Service of the PCBA
3.4.1 Change the PCBA 26
3.5 Change the Fans, Bar holders and Current transformers
3.5.1 Change the Fans 30
3.5.2 Change the Bar holders 31
3.5.3 Change the Current transformers 33
3.5.4 Assemble the Softstarter 35
3.6 Change the Bypass contactor
3.6.1 Change the Bypass contactor 37
3.6.2 Assemble the Softstarter 40
3.7 Change the SCR
3.7.1 Change the SCR 43
3.7.2 Assemble the Softstarter 46
3.8 Instructions for testing the SCR
3.8.1 Test the SCR 50
3.9 Change the Stays
3.9.1 Change the Stays 53
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