triOS Free Chlorine, Operating Instructions Manual

Page: 12 / 39

10
Us
e
Us
e
Calibr
ation
Calibr
ation
M
alfunc
tion and
M
ain
tenanc
e
M
alfunc
tion and
M
ain
tenanc
e
Comm-
issioning
Comm-
issioning
In
tr
oduc
tion
In
tr
oduc
tion
G
ener
al
Inf
or
ma
tion
G
ener
al
Inf
or
ma
tion
FA
Q
FA
Q
Technical
Da
ta
Technical
Da
ta
W
ar
ran
ty
W
ar
ran
ty
Cust
omer
ser
vic
e
Cust
omer ser
vic
e
Con
tac
t Con
tac
t
Key
w
or
d
Inde
x
Key
w
or
d
Inde
x
Ac
cessor
ies
Ac
cessor
ies
D01-905en201912 Manual eCHEM Free Chlorine
Commissioning
// Free Chlorine
3.2 Electrical installation
The chlorine sensor is equipped with an 8-pin M12 screw connector for electrical commissioning. The following figure shows
the pin assignment of the connector:
1. RS-485 A (commands)
2. RS-485 B (data)
3. Not assigned
4. Not assigned
5. Not assigned
6. Not assigned
7. Ground (Power + Ser. Interface)
8. Power (9...30 VDC)
Insert the connector into one of the supplied TriOS cables (2 m). Additional cable lengths of 0.3 m, 2 m, 5 m, 10 m, 25 m are
offered. Connect the male end of the cable into the connector on the sensor by making the pins align with the slots of the
cable. The next step is to turn the locking sleeve clockwise to secure the end of the connector.
The sensor may only be operated with the specified supply voltage.
Make sure that the supply voltage of the controller is constant! A supply voltage that is too low causes an incorrect measured
value and can lead to dangerous over-metering in a control loop. The sensors must be operated potential-free. There must be
no current flow between the sensors and the measuring medium. Measuring and control devices must therefore have galvanic
isolation.