Flowserve NRS1-40.1 Bedienungsanleitung PDF herunterladen (Seite 13)

Wiring

Bus cable, cable length and size

Note that screened multi-core twisted-pair control cable is required as Bus line, e. g. UNITRONIC

BUS

CAN 2 x 2 x...mm² or RE-2YCYV-fl 2x2x...mm².

The cable length dictates the baud rate (data transfer rate) between the bus nodes, and the total power

consumption of the sensor dictates the conductor size.

The baud rate is set via code switch Fig.4 (S8 to S10). Default factory setting of control unit NRS 1-40.1:

baud rate 250 kBit/s (cable length up to 125m). For longer cable lengths reduce baud rate accordingly.

Make sure that all bus nodes feature the same settings.

Change baud rate

With lower terminal strip unplugged:

Set the baud rate via code switches S8 to S10 as specified in the table in section Bus cable, cable length

and size by using a thin blade screwdriver.

Re-insert terminal strip and fasten the fixing screws .

Wire terminal strip

Wire terminal strips in accordance with the wiring diagram.

Connect screens only to terminal 3.

The max. baud rates and cable lengths indicated above are based on empirical values ob-

tained by GESTRA. In certain cases it may be necessary to reduce the baud rate in order to

ensure trouble-free operation.

S 8 S 9 S 10 Baud rate Cable length

Number of pairs

and conductor size [mm²]

OFF ON OFF 250 kBit/s 125 m 2x2x0.34

Factory setting

ON ON OFF 125 kBit/s 250 m 2x2x0.5

OFF OFF ON 100 kBit/s 335 m 2x2x0.75

ON OFF ON 50 kBit/s 500 m available on demand (depends

on bus configuration)

OFF ON ON 20 kBit/s 1000 m

ON ON ON 10 kBit/s 1000 m

B C

Note

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Flowserve NRS1-40.1 Bedienungsanleitung Seite 13