Nordson 107 041A, Manual

Page: 113 / 166

Troubleshooting
6-11
E
1996 Nordson Corporation
All rights reserved
107 041A
Issued 1/96
Manual 12-28
Problem Possible Cause Corrective Action
1. Conveyor rail does not
change position
(contd.)
Open cable 2355 Slide a piece of paper through minimum
and maximum limit-optical switch slots
on limit switch board. While sliding
paper, verify that dual-motor controller
card LED’s L3 and L4 turn on.
If LED’s do not turn on, use an
ohmmeter to check cable 2355:
230PL–1 pin C5 to 237PL–1 pin 4
230PL–1 pin C6 to 237PL–1 pin 3
230PL–1 pin C1 to 237PL–1 pin 2
230PL–1 pin C4 to 237PL–1 pin 1
Repair as necessary.
Bad dual-motor controller card NOTE: If limit flag activates limit-switch
board’s optical switch before rail reaches
its inner limit, PRD WIDTH actual
column should read calibrating. If it
does not, replace dual-motor controller
card.
If movable rail is not at inner limit, turn
off oven. After a few seconds, turn on
oven. Enter
RAISE COVER SCREEN
menu. Verify that PRD WIDTH actual
column displays “???”. If actual column
contains a number, replace the
dual-motor controller card.
If menu message reads recalibrate,
enter PRD WIDTH setpoint of 50.8. Use
a voltmeter to measure voltage between
pins (A19,C19) gnd and (A20, C20) on
dual-motor controller card. If 40 VDC is
not present, replace dual-motor
controller card.
NOTE: Dual-motor controller card LED
L3 is on while the limit-switch board
minimum LED is off.
Conveyor Width Control
Problems
(contd)