ABB PSTX 1050, Service Manual

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28 Service PSTX720...840 | Service Manual | 1SFC13105M0201
8. Connect bypass contactor cable and CT
cables to PCBA
When reconnecting cables; read markings on the
PCBA bracket.
1
Thread the bypass contactor cable, and the
three CT cables, through the cable inlets on the
PCBA bracket.
2
Connect the bypass contactor cable to its
terminal on the PCBA.
3
Connect the three CT cables, according to
previously made markings (1, 2 or 3), to their
terminals on the PCBA.
9. Connect SCR cables to PCBA
When reconnecting cables; read markings on the
PCBA bracket.
1
Thread all three SCR cables through the cable
inlets on the PCBA bracket.
2
Connect the three SCR cables, according
to previously made markings (1, 2 or 3), to their
terminals on the PCBA.
10. Place new PCBA and PCBA bracket
1
Place the new PCBA (mounted to bracket) on
the unit. Make sure cables do not get stuck in
between the bracket frame and Softstarter when
mounted.
11. Place HMI cover
Place the HMI cover on the unit and align it to the
plastic screw sleeves located on lower housing.
1
Fasten the HMI cover with
(4x) Torx 20
M4x12 (1,6Nm) .
2
Fasten
(1x) Torx 15 M3,5x12 (0,5 Nm)
on the HMI bracket.
REASSEMBLE THE SOFTSTARTER
Connect main power cables and control
cables
Connect the main power cables and the control
cables as described in
chapter 3.3.4, step 1-2 .
Procedures after PCBA replacement
Set the ID of the Softstarter after changing the
PCBA, as described in
chapter 3.2.2, step 1-6 .
Firmware needs to be updated when changing
the HMI. Please contact your ABB sales office for
information.
8
3.4.1_8
2
1
3
9
3.4.1_9
1
2
10
3.4.1_10
1
Tx 20 (1,6 Nm)
M4 x 12
Tx 15 (0,5 Nm)
M3,5 x 12
11
3.4.1_11
1
2
3