Nordson 107 041A, Руководство пользователя

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Troubleshooting
6-7
E
1996 Nordson Corporation
All rights reserved
107 041A
Issued 1/96
Manual 12-28
Problem Possible Cause Corrective Action
1. Conveyor is not moving
and a CONVEYOR
FAILURE menu appears
Conveyor jammed Check full length of conveyor for PCB’s
or foreign objects jammed into drive
chains and gears. Remove PCB’s and
objects as necessary.
Dual-motor controller card circuit
breaker CB2 tripped or conveyor
speed motor jammed If I/O card LED 019 is on, turn oven off
and check for tripped circuit breaker
CB2. Manually open oven cover and
check entire length of conveyor for
obstructions. Remove obstructions as
necessary.
Loosen set screw on conveyor speed
motor sprocket. Manually rotate input
shaft of speed motor. If shaft does not
rotate, replace speed motor. Tighten set
screw. Reset circuit breaker CB2.
Open cable 2415 See Figure 6-2. Turn off oven. Check
cable 2415 for an open.
(230PL–1 C24) to (241PL–1 pin 1)
(230PL–1 A24) to (241PL–1 pin 2)
(230PL–1 A23) to (241PL–1 pin 3)
(230PL–1 C23) to (241PL–1 pin 4)
If an open is found, repair cable.
Bad dual-motor controller card or
conveyor speed motor assembly See Figures 6-2 and 7-1. Turn oven on.
Raise oven cover and set conveyor
speed to 50 cm/min. Measure VDC
from pins (+) (A23, C23) to (–) (A24,
C24). Voltage should increase to about
30 VDC.
NOTE: When using an oscilloscope to
measure this voltage, place scope gnd
at pins (A24, C24) and probe at pins
(A23, C23). Verify that a 40 VDC
square wave reaches a 75% duty cycle.
If voltage is not present between pins,
replace dual-motor controller card. If
voltage is present between the pins,
replace conveyor speed motor
assembly.
Conveyor Speed Control
Problems
(contd)