Flowserve TRV5-40 - Manual (Page 11)

Wiring
Wiring of the temperature sensor
Note that screened four-core cable, e. g. Ölflex ® 0CH, Lapp, 4 x 0.5 mm is required for wiring
the equipment. Max. cable length between temperature sensor and temperature transmitter
TRV 5-40: 5 m.
When the equipment is open:
. Undo cable gland
I and pull the cables of the sensors through the glands.
. Strip off approx. 40 mm of cable insulation coating, remove approx. 5 mm of conductor end
insulation and disconnect the screen. Note that the screen must only be connected to the
temperature sensor.
3. Connect the sensor cables according to the wiring diagram to the terminal strip J.
4. Fasten cable glands I to achieve a good seal. Use sealing plugs to seal off cable glands that are
not used.
Bus line, cable length and size
Note that screened multi-core twisted-pair control cable is required for the BUS line, e. g. UNITRONIC ®
BUS CAN x x … mm or RE-YCYV-fl x x … mm .
Preassembled control cables (with connector and coupler) for connecting the equipment are available
as accessories.
The baud rate (data transfer rate) dictates the cable length between the bus nodes and the total power
consumption of the sensor dictates the conductor size.
When the equipment is open you can set the baud rate by using the code switch F Fig. 3 (S 8 to 0).
The baud rate of the temperature transmitter TRV 5-40 is set at our works to 50 kBit/s (for a max.
cable length of 5 m). Reduce the baud rate if the cable length exceeds 5 m. Make sure that all
bus nodes feature the same baud rate setting.
S 8 S 9 S 10 Baud rate Cable length
Number of pairs
and conductor size [mm 2 ]
OFF ON OFF 250 kBit/s 125 m
x x 0.34
Factory setting
ON ON OFF 5 kBit/s 50 m x x 0.5
OFF OFF ON 00 kBit/s 335 m x x 0.75
ON OFF ON 50 kBit/s 500 m
on request, dependent on
bus configuration
OFF ON ON 0 kBit/s 000 m
ON ON ON 0 kBit/s 000 m
Note
The specified max. baud rates and cable lengths are based on empirical values
ascertained by GESTRA. However for some applications it might be necessary to reduce
the baud rate in order to ensure trouble-free operation.
UNITRONIC ® is a registered trademark of LAPP Kabelwerke GmbH, Stuttgart.