GESTRA LRR 1-52, Original Installation & Operating Manual

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34 LRR 1-52, LRR 1-53, URB 55 - USA - Installation & Operating Manual -
850703-00
Electrical connection of the LRR 1-52, LRR 1-53
Connecting an LRGT 1x-x conductivity transmitter
■
Use a shielded, multi-core TC-ER control cable with minimum wire size AWG18, e.g., OELFLEX
CONTROL TM CY 5G1.
■
Connect the conductivity transmitter as shown in the wiring diagram Fig. 18 .
■
Maximum cable length = 328 ft (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 TC-ER control cable with minimum wire size AWG18, e.g., OELFLEX
CONTROL TM CY 3G1.
■
Maximum cable length = 328 ft (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 = 98 ft (30 m).
Connecting the potentiometer (0 - 1000
W
)
■
Use a shielded, multi-core TC-ER control cable with minimum wire size AWG18, e.g., OELFLEX
CONTROL TM CY 3G1.
■
Maximum cable length = 328 ft (100 m).
■
Route connecting cables separately from power cables.