Microsensor MPM4730 Operation Manual page 9

Electric
connection of
explosion
proof product
Note: Explosion-proof product of 4-pin plug connection only provide (4 ~ 20) mA DC
output
4.2 Typical electrical connection method
a) The electric connection method of transmitter with 2-wire, 4mA～
20mADC output to see Figure 7:
P
Input
b) The electric connection method of transmitter only with RS485
communication to see Figure 8:
Internal
Definition
Wiring
＋V
1（Black）
OUT/GND 2（Red）
Case 3（Blue）
RS485B 4（White）
RS485A 5（Yellow）
Transmitter
Black/+V
P
Red/+OUT
I
Plug
4Wires
Plug
Color
1
2
-
-
10～28V DC
+
Load
+
Fig. 7
8
External Plug Connection
MPM4730 B2
& MPM4700
Black
Red
Blue
White
Yellow(Green)
-
U
Output
-
R
7 Wires
Plug
1
2
7
5
4
DC ammeter
A
4mA～20mA DC