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LRR 1-52, LRR 1-53, URB 55 - Installation & Operating Manual -
850645-01
Electrical connection - LRR 1-52, LRR 1-53
Connecting an LRGT 1x-x conductivity transmitter
■
Use a shielded, multi-core, twisted-pair control cable with a minimum conductor size of 0.5 mm
2
,
e.g. LIYCY 4 x 0.5 mm
2
.
■
Connect the conductivity transmitter as shown in the wiring diagram in
Fig. 18
an.
■
Maximum cable length = 100 m.
■
Route connecting cables separately from power cables.
The conductivity transmitter must be connected to its own dedicated
supply voltage.
Connecting the actual value/manipulated variable output (4 - 20 mA)
■
Please note the load resistance of max. 500
W
.
■
Use a shielded, multi-core, twisted-pair control cable with a minimum conductor size of 0.5 mm
2
,
e.g. LIYCY 2 x 0.5 mm
2
.
■
Maximum cable length = 100 m.
■
Route connecting cables separately from power cables.
Connecting the standby input (24 V DC)
■
24 V DC input, for external command: Control OFF, Valve CLOSED, Intermittent blowdown OFF.
■
Maximum cable length = 30 m.
Connecting the potentiometer (0 - 1000
W
)
■
Use a shielded, multi-core, twisted-pair control cable with a minimum conductor size of 0.5 mm
2
,
e.g. LIYCY 2 x 0.5 mm
2
.
■
Maximum cable length = 100 m.
■
Route connecting cables separately from power cables.