20Ap1 Control Board; 20Ap1:1 Power Supply - ESAB Arc 4000i Service Manual

20AP1 Control board

The processor on the control board monitors and controls the various functions of the power
source. It obtains information on welding data and welding processes from the welding data
board of the control panel.
This description is valid for machines supplied with circuit board 0487 201 880.
Mig U4000i, Mig 4000i, Tig 4000i and Arc 4000i with serial no. 803--xxx--xxxx are supplied
with this circuit board.
Spare part boards
When replacing the board, do not forget to move the "terminal D jumper" and the "Y2--Y3
jumper" to the new board. See pages 36 and 38.
CAUTION!
This circuit board looks identical to the control board used in other machines, but there are
differences in both hardware and software. If wrong board is used, it might cause serious
damage to the machine. Make sure that the replacement board has correct article number,
see the spare parts list.
Circuit board identity
The control board has a machine ID, a hardware ID and a unit type number. To read this
you need the ESAT service kit, see page 56.
The machine ID defines which type of power source the board is intended for.
S
The hardware ID shows design and type of circuit board.
S
The unit type is used for identification on the CAN bus.
S
The ID numbers of the Mig U4000i, Mig 4000i, Tig 4000i and Arc 4000i are:
Machine ID = 11
Hardware ID = 5
Unit type = 2
20AP1:1 Power supply
+24 V Power supply to relay board 20AP2
+15 V Internal power supply on 20AP1 and power supply to the pulse
- -15 V Internal power supply on 20AP1.
+5 V Internal power supply on 20AP1.
+2.5 V Internal power supply on 20AP1.
cu19_20_1
transformers on 15AP2.
- - 32 - -
S0740 800 191/E080229/P78