822-1002-C01 datasheet(11/40 Pages) MAGNETROL

11 / 40 page

50-621 Kotron Sentinel Models 822, 832 and 842 RF Point Level Switches

1.7

Wiring

Figure 13

WARNING! Explosion hazard. Do not disconnect equipment unless

power has been switched off or the area is known to

be safe.

1.7.1 Relay Wiring

The recommended connection of power and control

circuits is 16 AWG or 18 AWG stranded wire.

To improve external noise immunity, electrical snubbers

are provided on the relay contacts. These are factory

installed between the common (C) and the normally open

(NO) contacts. The position of the snubbers should be

changed between the C and NC contacts if the normally

closed (NC) contacts are used.

NOTE: If the snubbers are not wired properly in parallel with the relay

contacts, external electrical noise may disturb the operation of

the instrument.

Refer to Section 1.7.3, Relay Wiring Chart for different

relay wiring options. Refer to Figure 13 for terminal

locations.

NOTES:

1. Relay 2 and relay 3 can be utilized for lead-lag pump sequenc-

ing (models 832 and 842 only).

2. Relay 1 can be utilized as a dedicated diagnostic alarm.

Refer to Calibration sections (pages 10–23) for proper use

of these relays.

1.7.2 Power Wiring

1. Ensure that power source is turned off.

2. Pull power supply wires through conduit connection.

3. Connect the positive supply wire to the H terminal, and

the negative (neutral) supply wire to the N terminal.

Connect the ground wire to the green ground screw in the

bottom of the housing.

4. Dress the wires together neatly and secure with cable ties.

Be certain that adequate clearance exists for replacement of

housing cover

NOTE: Observe all applicable electrical codes and proper wiring

procedures.

822-1002-C01 Datasheet(PDF) 11 Page - Magnetrol International, Inc.