00197471-03_Service Manual Internal WPC5_6, EN_01-2019.pdf - 第67页
Service Manual In ternal WPC5 / WPC6 Page 3- 67 3.6.5.4 Repla cing the Complet e Po wer Suppl y Unit Spare Part • W PC5 pow er suppl y unit [03072955- xx] • W PC6 pow er suppl y unit [03056701- xx) Overview The power s…
Service Manual Internal WPC5 / WPC6
Page 3-66
3.6.5.3 Replacing the Inrush Current Limitation Board
The inrush current limitation boards are located at the back of the electrical unit (see "3.6.4.2
Power Supply for WPC5" [➙ 3-61] for WPC5 and "3.6.4.3 Power Supply for WPC6" [➙ 3-62] for
WPC6).
Spare Part
• Inrush current limitation board WPC [03047752-xx] (A1)
• Inrush current limitation board WPC NS [03056232-xx] (A2) (WPC6 only)
Removal / Installation
➢ Label all connections for easier installation later.
➢ Unplug all connections from the inrush current limitation board.
➢ Lever the inrush current limitation board off the mounting rail.
➢ Connect the new inrush current limitation board to the mounting rail and restore the
electrical connections.
Settings
• No settings are required.
See also...
@
3.6.5
Power Supply electric [➙ 3-64]
Service Manual Internal WPC5 / WPC6
Page 3-67
3.6.5.4 Replacing the Complete Power Supply Unit
Spare Part
• WPC5 power supply unit [03072955-xx]
• WPC6 power supply unit [03056701-xx)
Overview
The power supply assemblies (1), such as the transformer, relays and contactors, inrush current
limitation board etc. are fitted on an mounting plate (2) and can be removed as a complete unit.
The mounting plate is fixed with 4 screws to the WPC frame:
• 2 x side, front (3)
•
1 x on frame, left side (4)
•
1x on frame, right side - in cable duct (6)
Removal
➢ To gain better access to the power supply unit, dismantle the side covers and, if necessary,
the front cover. See section.
➢ Check whether all cables are labeled.
➢ Make sure that you are able to correctly assign all cables and plugs again. Where
necessary, label cables, plugs and connections for easier reconnection later.
DANGER
Voltage at cable to the main switch
When the WPC power cable is connected and the main switch has been turned off,
voltage is still present at the cable to the main switch, at the line filter and at the terminals
to the main switch.
Disconnect the WPC from the power supply.
Service Manual Internal WPC5 / WPC6
Page 3-68
➢ Remove all cable fixtures (cable ties etc.) and disconnect all cables and plugs from the
power supply unit.
➢ For connection details and complete circuit diagrams, please refer to the following
documentation:
➢ Detailed circuit diagrams [00196627-xx] German/English
➢ Loosen the 4 fastening screws (3), (4) and (6).
➢ Disconnect the ground terminal (5) from the mounting plate of the power supply unit.
➢ Remove the mounting plate with the complete power supply unit from the WPC, by pulling
the power supply unit out to the side.
CAUTION
! Heavy weight of the power supply !
When pulling out the mounting plate, make sure you always provide support from below as the
transformer is very heavy and the plate could bend if support is not provided.
➢ The power supply assemblies are now accessible for further service work, such as
replacement of the lines filter, rectifiers or transformers.
Strain relief on the power supply unit
(example of WPC6 shown)
➢ When pulling out the power supply (1),
take care of the strain relief.