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MIW-SPS-EN-001 - 29 / 11 / 2018
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2.
Fix the rear lid of the enclosure on the wall / panel by suitable fastening elements.
Mind the correct mounting position and unit mounting dimensions. (See
Fig. 1
Mounting dimensions
and
Fig. 2
Mounting position.
)
Fig. 1 Mounting dimensions
Fig. 2 Mounting position
2x Ø 3,
4
49
52
Correct
Incorrect
SPS
+ _
SPS
+
_
SPS
+
_
3.
Do the wiring according to the wiring diagram (see
Fig. 3
) using the legend
information from section
“Wiring and connections”
.
Fig. 3 Wiring and connections
Power supply
13 - 26 VAC / 18 - 34 VDC
Analog output
0 - 10 VDC / 0 - 20 mA / PWM
Modbus
RTU
A
/B
4.
Check if your unit starts or terminates the network (see
Example 1
and
Example 2
). If it does, set the NBT jumper onto the pins. Otherwise leave it
open. See
Fig. 4
Network bus resistor jumper.
Example 1
Example 2
Fig. 4 Network bus
resistor jumper
RX
ТX
NBT
NBT
NBT
Slave 2
Master
Slave n
Slave 1
Slave 2
Slave 1
RX
ТX
NBT
NBT
Master
Slave n
ATTENTION
If an AC power supply is used with any of the units in a Modbus network, the
GND terminal should NOT BE CONNECTED to other units on the network or
via the CNVT‑USB‑RS485 converter. This may cause permanent damage to the
communication semiconductors and / or the computer!
SPS
DIFFERENTIAL PRESSURE
TRANSMITTER
