FISCHER Mess- und Regeltechnik GmbH
Installation and assembly | 3
BA_EN_ME50_ATEX
11/28
The nominal supply voltage and the permissible range can be found in the tech-
nical data.
The admissible load / resistance is stated in the technical data.
3.3.1 Ground connection
Ground connection
Fig. 5:
Ground connection
The outer ground connection must always be connected to the protective poten-
tial equalisation or a similar local potential equalisation.
The ground terminal is suitable for connecting fine-wire conductors up to 4 mm
2
or single-wire conductors up to 6 mm
2
.
3.3.2 3-conductor version
Pressure Transmitter
Services
Output signal
Input signal
+Sig
+U
b
-U
b
-Sig
+U
b
-U
b
+
-
-
+
Fig. 6:
3L Circuitry
Without switch output
Fig. 7:
M12 connector 8-pin
PIN
Signal name
Cable colour
1
Outlet
+Sig
white
2
Services
+U
b
brown
3
---
n.c
green
4
---
n.c
yellow
5
---
n.c
grey
6
---
n.c
pink
7
Services
-U
b
blue
8
Functional earth
FE
rot
A
Coding A
Table 1:
Supply, and output signal
With switch output
There are three options available for the semiconductor switch contacts K1 and
K2.
1. Potential-free
2. PNP-switching In this version, the connections K1(b) and K2(b) are connec-
ted with +Ub ex-works. The switch output is called PNP1 or PNP2.
3. NPN-switching In this version, the connections K1(b) and K2(b) are connec-
ted with -Ub ex-works. The switch output is called NPN1 or NPN2.
Please note that the type of switch contact can be programmed and can work
both as an NC or NO contact. For reasons of simplicity, they are shown as NC
contacts in this connection description.