Flowserve TRV5-40 Manual de usuario descargar pdf (Pagina 18)

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 24 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 120 Ω terminating

resistors?

Conﬁguration of the level electrode NRG 1x-40 (Low water level LW):

Are the wire bridges (equipment 1 or 2) 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 1, 2, 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?

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Flowserve TRV5-40 Manual de usuario Pagina 18