Flowserve LRR1-40 TDS Control Unit Manual de usuario descargar pdf (Pagina 28)

System Faults – continued –

Systematic malfunction analysis

The sources of malfunctions occuring in CAN bus systems operating with several bus-

based stations must be analysed systematically since faulty components or incorrect

settings can give rise to negative interactions with intact bus devices in the CAN bus

system. These unwanted interactions can cause error messages in fully functional bus

devices, which will make fault detection even more difficult.

We recommend the following systematic fault finding procedure:

Step 1 (Start)

Detach

terminal strips

in all bus sensors.

Level electrode

Conductivity electrode

Pressure sensor

Temperature sensor

etc.

Step 2

Plug in terminal strip

of the sensor

of the system

e.g. LRR...

and

LRG... (sensor)

Check

Use fault-finding

list to identify

the fault(s)!

Final test

Have all faults

been eliminated?

System Fault

Use fault-finding

list to identify the fault

Cut off power supply

to the equipment!

Step 3

Apply mains voltage

to bus devices

of the system

e.g. LRR...

and

LRG...

System O.K.

Detach

terminal strips

between bus devices

of the system

e.g. LRR...

and

LRG...

Check next system

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 37 38

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Flowserve LRR1-40 TDS Control Unit Manual de usuario Pagina 28

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