Troubleshooting guide

68
Trouble Shooting Flowchart (Vission Only)
MicroController does not boot up, no
lights on any boards.
MicroController appears to be
booted, lights seen on boards and E-
stop switch, but no touch screen is
evident.
MicroController boots up but all data
temperatures and pressures are
zeroed and do not update.
Check to make sure 120VAC is run to “L1” on the Relay board.
This is the board on the inside left back of the panel. “L1” is
the fifth connector down from the top and the top terminal.
The neutral should be brought to any “N” on the relay board.
Check F1 fuse on relay board.
Check F1 fuse on the power supply, located on the front of the
door. If all of the above is okay, the power supply may be bad.
Check DC voltages on the single board computer interface
board, which is the big green board above the power supply.
Along the right edge of this board, just above the power sup-
ply connector J14, are test points. If proper voltages are not
located at these test points, the power supply may be faulty.
Check cable connections located on the LCD Inverter board.
This board is located inside the door on the LCD touch screen
back plane above the single board computer. The connector
with the pink and white wires, located on the left center of the
board is the power supply to the board. The connector on the
top right of the board with the black wires has the data wires.
If these are inserted correctly, the problem could be bad solder
joint on the LCD Inverter board or a component failure.
Check Analog board jumpers J41 & J46. They should be on
pins 1 & 2 (center and right pins).
Check the upper DIP switch on the analog board. This identi
fies the node address of the Analog board. Only switch #1
should be on, the rest off.
The MicroController has (2) boards running separate programs.
The Analog board located inside the panel on the back right
calculates pressures, temperatures, amps and monitors inputs.
The single board computer requests this data for action and
display. The single board computer will instruct the Analog
board to activate outputs or relays as needed. Communica
tion between the boards is RS-485 running at 115200 baud.
The cable is basically phone cable with phone jack style con
nectors. The connector to the single board computer is on the
touch screen back panel and is labeled RS-485 Com2 to Ana
log Bd. The connector on the Analog board is located on the
bottom of the board. There are 2 connectors on the analog
board, either one can be used.
If this cable is open or disconnected, there will be no commu-
nications between the boards. The top two green lights on the
Analog board (D10 & D11), located on the bottom left of the
board, will be off. The pressures and temperatures will not
update. Ensure the cable is plugged in correctly. Try rebooting
again. If the problem persists, try moving the cable on the
Analog board to the other connector. If not successful, try a
different cable on the Analog board to the other connector on
the board. If not successful, try a different cable. Any phone
style cord should work. If neither of these help, contact the
Vilter Home Office.