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LRR 1-52, LRR 1-53, URB 55 - Installation & Operating Manual -
850645-01
Wiring diagram - LRR 1-53 conductivity controller
Connecting an LRGT 1x-x conductivity transmitter (4 - 20 mA) with earthing point
MIN alarm
relay output
or
Actuates an
intermittent blowdown valve
MIN
Actuates a continuous
blowdown valve
CLOSED
OPEN
MAX alarm
relay output
MAX
Supply voltage,
fuse provided by
customer M 0.5A
Actual value/manipulated
variable output
(switchable)
Display of valve position
(potentiometer 0 - 1000
W
)
Da
ta line
for URB 55
M
= shiel
d
LRGT 1x-x
Conductivity transmitter
(4-20 mA) with earthing point.
Fig. 18
+
–
24 V DC
27
16 17 18 19 20 21 22 23 24 25 26
28 29 30
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15
24
V DC
4-20 mA
+
–
M 0,5
A
+
–
0 - 1K
Ω
–
+
H
L
S
S
+
–
Standby input for an external command:
Control OFF / Valve CLOSED / Intermittent blowdown OFF