Flowserve TRV5-40 - Manual (Page 18)

8
Causes
Faulty installation and/or configuration of CAN bus components, excessively high temperatures in
devices, defective electronic component parts or electromagnetic interferences of the supply system
can result in system malfunctions.
Other malfunctions are:
n
Incorrect communication in the CAN bus system
n
Overloading of the 4 V power supply unit that is integrated in the control unit
System Malfunctions
Note
Before carrying out the system malfunction analysis please check:
Wiring:
Is the wiring in accordance with the wiring diagrams?
Is the polarity of the bus lines always correct?
Are the bus lines of the first and the last devices provided with 0 Ω terminating
resistors?
Configuration of the level electrode NRG 1x-40 (Low water level LW):
Are the wire bridges (equipment or ) set correctly?
Does the position of the wire bridge correspond with the node ID setting?
Configuration of the temperature transmitter TRV 5-40:
Is the temperature transmitter TRV 5-40 set correctly as equipment , , 3 or 4?
Node ID:
Are all node ID settings correct?
Note that no node ID setting must be used twice!
Baud rate:
Does the baud rate setting correspond with the cable length?
Is the baud rate setting of all devices identical?