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Installation pH 296
114
Installation instructions for the pH 296
Terminal assignment
A
B
GND
Sens-Check
RS 485
digital
interface
Contact-
outputs
Recorder
output
Sensor
Power
supply
Relay 1
Relay 2
N -
L1 +
AC DC
Unused wires must not jut into the housing. Otherwise, malfunctions
can occur. This especially applies to the ground wire of the mains cable.
Cut off unused wires in the housing as close to the armored thread joint
as possible.
Terminal
Terminal assignment
X1
X2
1
A (RS 485)
REC 1 +
2
B (RS 485)
REC 1
–
3
GND (RS 485)
REC 2 +
4
Sens-Check
REC 2
–
5
Sens-Check
a (sensor)
6
Relay 1
b (sensor)
7
Relay 1
c (sensor)
8
Relay 2
d (sensor)
9
Relay 2
e (sensor)
10
N (mains)
f (sensor)
11
L1 (mains)
g (sensor)
12
–
h (sensor)
13
–
i (sensor)
Note:
For power supplies above 24 VDC, use the following wiring:
L
1
+ 24 V
N
GND