Electrical wiring
IVA 521
English V1.20
Page 13 of 39
9
Electrical wiring
9.1
Modbus RTU, 4…20mA,
Pulse or MBus
Attention:
Not required connections NC must not be connected to a voltage and/or to protection
earth. Cut and insulate cables.
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Connector plug
A
+VB
RS 485 (A)
-VB
RS 485 (B)
I+
4..20 mA
Connector plug
B
Pulse output (standard)
NC
GND
DIR
Pulse
galv. isolated
Pulse
gavl. isolated
Connector plug
B
Option MBus
NC
GND
DIR
MBus
MBus
Colours pulse cables
0553 0106 (5 m)
0553.0107 (10 m)
brown
white
blue
black
grey
Legend:
-VB
Negative supply voltage 0 V
Pulse
Pulse for consumption
+VB
Positive supply voltage 18...36 VDC smoothed
NC
Must not be connected to a voltage
and/or to protection earth. Please cut
and isolate cables.
I +
Current signal 4...20 mA
–
selected measured
signal
RS 485 (A)
RS 485 (B)
Modbus RTU A
Modbus RTU A
MBus
MBus (reverse polarity protected)
If no connection cable/ pulse
cable is ordered the sensor will
be supplied with a M12
connector plug. The user can
connect the supply and signal
cables as indicated in the
connection diagram.
.
M12 Connector plug
View from back side
(terminal side)
Connector plug A (M12 - A-coding)
Connector plug B (M12 - A-coding)
3
4
5
1
2
+ VB
- VB
4
…
20mA
+
-
Grau / Grey
Blau / Blue
Weiss / White
Schwarz / Black
Modbus (B)
Modbus (A)
Braun / Brown
3
4
5
1
2
Grau / Grey
Schwarz / Black
Impulsausgang / Pulse output
Remark
:
If the sensor is placed at the end of the Modbus system a termination is required. The sensors have an
internal switchable termination, therefore the 6 fastening screws from the lid are to be released and set
the internal DIP Switch to “On”. It must be ensured that the connection plugs are still plugged and the
gasket is installed correctly, see also chapter 6.2.
Alternatively, a 120R resistor can be installed in the plug between pin 2 and pin 4
.
Connector plug A
Connector plug B
Summary of Contents for IVA 521
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