120 W
LO HI
Fig. 7‐7
CAN module
1. Switch off main contactor
and wait 3 min!
Replacing motor
controller
New MC
Main
contacto
r
Fig. 7‐8
Repair
7‐6
P/N 213828_11
2014 Nordson Corporation
VersaBlue_PPA
CAN Bus Terminating Resistor
A terminating resistor should be on both sides of the CAN bus. One of the
two terminating resistors is on the last temperature control board and must
be switched on.
The second terminating resistor (120 ) must be installed
On the CAN board of the last motor controller (Fig.7‐7)
or
If there are one or more pressure sensors installed in the system, on the
last pressure sensor. Refer to Fig. 7‐13.
NOTE: The two CAN bus terminating resistors are switched in parallel via
the bus. Thus, when they are installed, resistance measuring indicates a
value of 60 .
On the Control Panel: Allocating Replaced Motor Controllers (MC) to
their Motors
Example: On a melter with four configured motors/pumps, the motor
controller for motors 2 and 4 were replaced because they were defective.
When the melter is switched on again, Fig. 7‐8 appears.
NOTE: If only one MC is defective and thus replaced, the IPC automatically
assigns it to the correct motor. The operator need not assign manually.
Indications lamps show the configured motors/pumps for which motor
controllers are found.
In this case: Pumps 1 and 3.
Allocation is possible only when the system has found only one
motor
controller (indication lamp New MC lit). This is why the replaced motor
controllers must be integrated into the CAN bus individually.
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