Nordson VersaBlue VB Series - No Line Speed Signal (Voltage; Current; Frequency)

Troubleshooting
6-17
P/N 7105144G
 2008 Nordson Corporation
VersaBlue_NW
Problem Possible Cause Corrective Action
Motor overheated Ambient temperature too high Decrease ambient temperature by
cooling or airing out
Fan cap dirty Clean
Pump blocked by foreign matter Replace pump
Pump operates too sluggish Replace pump
Material too cold Set temperature accordingly
Motor defective − Replace
Motor not supplied with
voltage
− Technical inspection
Motor controller fault ⇒ Switch melter off and on again with
main switch
Motor overheated Refer to Motor overheated
Motor controller overheated Decrease ambient temperature by
cooling or airing out
Clean cooling section of motor
controller
Short circuit Check motor power
Overload (pump blocked by
foreign matter, pump too sluggish,
material too cold)
Refer to Motor overheated
Motor controller
defective
− Replace
NOTE: If more than one motor
controller has been replaced, the
screen Motor controller replacement
appears. Refer to section Repair,
Replacing Motor Controller.
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