Flowserve LRR1-40 TDS Control Unit Manual de usuario descargar pdf (Pagina 17)

Wiring – continued –

Wiring diagram for CAN bus

The following wiring diagram serves as an example:

Central

earthing point

CEP

Operating

device URB

Control unit

...

Conductivity

electrode

LRG 16-40

Level

electrode

NRG ...

Terminating resistor

120Ω

Terminating resistor

120Ω

Voltage supply CAN data line

Control unit

LRR 1-40

Fig. 6

Attention

■ Wire equipment in series. Star-type wiring is not permitted!

■ Link screens of bus cables such that electrical continuity is ensured and

connect them once to the central earthing point (CEP).

■ To protect the switching contacts provide the circuit with a T 2.5A or 1A

fuse (TRD 604, 72 hours operation without constant supervision).

■ If two or more system components are connected in a CAN bus system,

provide the first and the last device with a terminating resistor of 120Ω

(terminal CL/CH Fig. 6).

■ The CAN bus system must not be interrupted during operation.

In the event of an interruption a malfunction alarm is raised.

If the control unit has to be replaced, detach the terminal strip (Fig. 2).

Before taking the CAN bus line from the terminal strip, make sure that all

connected system components are out of service.

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Flowserve LRR1-40 TDS Control Unit Manual de usuario Pagina 17