Version 2.1
en MBI 46.31 operating instruction.docx
Issue date: 01/2022
Page 19 of 42
Hazardous voltages inside
the measuring amplifier with 230 V supply
voltage (type 46.31.2x).
Touching live parts can result in death, serious injury or considerable property
damage.
•
Before opening the field enclosure, check all conductors. They must be de-
energized.
Connector Terminal
block
Wire color (field
enclosure)
Assignment
W
V
A
ac 2
16
WH
Excitation v
ac 4
15
BU
Excitation voltage
–
ac 6
14
RD
Amplifier input
– (measuring
signal
–)
ac 8
13
BK
Amplifier input + (measuring
)
ac 10
12
0 V
ac 12
11
BK
Supply voltage 24 V, low
ac 14
10
not used
ac 16
9
not used
ac 18
8
not used
ac 20
7
not used
ac 22
6
RD
Supply voltage 24 V, high
ac 24
5
RD
Voltage output
ac 26
4
BU
Current output
ac 28
3
(BU)
Supply voltage
–15 V
ac 30
2
(RD)
Supply v15 V
ac 32
1
(BK) BK
0 V
Figure 10
Pin assignment of measuring amplifier
If the displacement sensor is connected according to the table above, there is a
positive (increasing) output signal, when the core moves out of the
displacement sensor or the measuring tube moves downward from the sensor
housing. If a negative (decreasing) signal is desired for this direction of
movement, switch the connections ac 2 (terminal 16) and ac 4 (terminal 15).
WARNING
