33
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 the 24 V DC power supply
■
The LRR 1-52 or LRR 1-53 conductivity controller is supplied with 24 V DC.
■
A safety power supply unit that delivers a Protective Extra Low Voltage (PELV / CLASS2) must
be used to supply the equipment with 24 V DC.
■
Use a 0.5A medium time-lag fuse as an external fuse.
Connecting the MIN/MAX/CLOSED/OPEN output contacts
■
Connect the outputs as shown in wiring diagrams
Fig. 16
to
Fig. 18
.
■
Only use the terminals specified in the wiring diagrams.
■
Use an external 2.5A slow-blow fuse to protect the switching contacts.
■
If used as a conductivity limiter, the LRR 1-52, LRR 1-53 conductivity controller does not
interlock automatically when the MAX limit is exceeded.
■
If the installation requires an interlock, this must be implemented in the downstream (safety)
circuit.
Notes on connecting inductive loads
All connected inductive loads, such as contactors and actuators, must have interference
suppression using RC combinations, as specified by the manufacturer.
Connecting an LRG 16-4 conductivity electrode
■
Use a shielded, multi-core TC-ER control cable with minimum wire size AWG18, e.g., OELFLEX
CONTROL TM CY 3G1.
■
Connect the conductivity electrode as shown in wiring diagrams
Fig. 16
to
Fig. 17
.
■
Route connecting cables separately from power cables.
Connecting an LRG 16-9 conductivity electrode
■
The LRG 16-9 conductivity electrode is equipped with an M12 A-coded, 5-pole sensor connec-
tor. A pre-wired control cable (with connector and socket) is available in various lengths as an
accessory for connecting the equipment.
■
To connect the LRR 1-52 conductivity controller, please remove the connector and wire the
terminal strip as shown in wiring diagrams
Fig. 16
to
Fig. 17
.
■
If you are not using the pre-wired control cable:
Use a shielded, multi-core TC-ER control cable with minimum wire size AWG18, e.g., OELFLEX
CONTROL TM CY 5G1.
In addition, connect a socket, e.g., Binder series 713 99-0436-58-05, to the control cable at
the conductivity electrode end.
■
Route connecting cables separately from power cables.
Summary of Contents for LRR 1-52
Page 69: ...69 LRR 1 52 LRR 1 53 URB 55 USA Installation Operating Manual 850703 00 For your notes ...
Page 70: ...70 LRR 1 52 LRR 1 53 URB 55 USA Installation Operating Manual 850703 00 For your notes ...
Page 71: ...71 LRR 1 52 LRR 1 53 URB 55 USA Installation Operating Manual 850703 00 For your notes ...
