Nordson VersaBlue VA, Manual

Page: 178 / 272

Troubleshooting 6‐4
P/N 213828_11
2014 Nordson Corporation
VersaBlue_PPA
Alarm Numbers, Alarm Text and Optional Light Tower
(contd.)
Light tower colors
Alarm no. Status Green Yellow Red
25 Channel: Sensor input open or sensor broken
(Sensor = temperature sensor)
Hose/applicator connected?
26 Channel: Sensor short-circuit
(Sensor = temperature sensor)
31 Motor or controller overheated
Check motor controller wiring at the terminal with
the label
T1-T2
Motor fan cap / motor controller cooling section dirty
Ambient temperature too high
40 Overpressure Fault: Motor #, Sensor #
Refer to Troubleshooting Tables in this section
Alarm no. Status Green Yellow Red
Status
display
Shutdown
Shutdown turns the melter off (main contactor opens).
1 Main contactor / thermostat fault
Main contactor defective
Main contactor switches incorrectly due to wrong
wiring: Check wiring of main contactor and check­
back contact.
Transformer temperature exceeded
Tank temperature exceeded
2 CAN bus not started
Check CAN bus cable
(particularly at the motor controllers)
Check CAN bus plugs on all components
Check CAN terminating resistors
Measure bus resistor when switched off (CAN‐H,
CAN‐L): 60
I/O board failure
Contact fault in voltage supply
Fuse(s) on board have activated
Incorrect or fluctuating operating voltage
The CAN bus address of the board was changed
(dial) while the melter was operating.
Short‐circuiting or potential faults at the plug con­
nections X5, X10, X14, X15 of the I/O board
Continued ...