GF Welding Weld334m - Replacing the CPU Card; Replacing the Power Feeder

Weld334m - User’s manual
70
Replacing the CPU card
The CPU card has its own (compulsory) position on the P1 of the bus and is connected to
the display module via a 10-way flat cable.
The P7 3-way connector does not take 24V I/O supply from the bus, it takes the privileged
power supply to power the programming unit from the RS485 port (P1).
How to replace the card:
1.
Switch off the machine and disconnect wiring.
2.
Disassemble the control device from the machine support.
3.
Remove the front panel by undoing the 3 fastening screws.
4.
Disconnect the card to be replaced paying utmost care in doing this operation.
5.
Disconnect the display connector from P3. Pay utmost attention in doing this.
6.
Check if the new card is fitted with the buffer battery for the permanent memory.
Verify jumpers on the connectors JP3 and JP6; they must be as follows:
JP3: 3-4 and 6-7 jumpers JP6: 1-2 jumper
7.
Connect the display flat cable to P3 connector.
8.
Insert the new card onto the bus making sure that the P7 connector is fitted
correctly.
9.
Put the front part in place again making sure that the PS connector fits correctly into
the window then fasten the front panel with the screws.
10.
Re-install the control device onto the machine.
11.
Connect wiring again.
Replacing the power feeder
The power feeder card can be easily replaced. Check that the internal 250V, 1.5A fuse for
24VE supply is present before installing the new card.
How to replace the card:
1.
Switch off the machine and disconnect wiring.
2.
Disassemble the control device from the machine support.
3.
Remove the front part buy undoing the 3 fastening screws.
4.
Remove the 5 screws fastening the power feeder to the fastening brackets.
5.
Disconnect the power feeder from the bus.
6.
Check that network sync jumpers on the power feeder are set in the correct way
(internal or external, see paragraph 3.4).
7.
Connect the new power feeder making sure it fits properly into the connectors J1 and
J2 of the bus.
8.
Screw it down.
9.
Put the front part in place again making sure that the PS connector fits correctly into
the window then fasten the front part with the screws.
10.
Re-install the control device onto the machine.
11.
Connect wiring again.