Technical data

Troubleshooting
6-2
P/N 7135049A
E 2007 Nordson Corporation
VBC_Siemens
Troubleshooting Tables
Melter not Functioning
Problem Possible Cause Corrective Action
No line voltage − Connect line voltage
Main switch not switched
on
− Switch on main switch
Main switch defective − Replace main switch
Main circuit breaker
activated
− Switch on main circuit breaker
Main circuit breaker
activated again
Check for short circuit in melter or
accessories
−
24 V
DC
power supply
defective
− Replace
One Channel does not Heat
Problem Possible Cause Corrective Action
Channel is deactivated − Activate the temperature channel
on the control panel (or via the
optional field bus)
The channel is assigned to
a group, and the group is
deactivated or in standby
Check the state of the group in the
screen Switch application group(s)
(Refer to section Operation)
Activate the group via the control
panel, or if set up so, via the
Standard I/O interface.
No Line Speed Signal (Voltage / Current / Frequency)
Problem Possible Cause Corrective Action
Parent machine not
operating
− Start up parent machine
Polarity of line speed
voltage input is reversed
− Reverse polarity
Encoder defective − Replace