822-1002-C01 datasheet(12/40 Pages) MAGNETROL

12 / 40 page

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

5. Replace housing cover.

6. Apply power to the unit, and proceed with calibration

of instrument as described in Section 2.0, Calibration

beginning on page 10.

NOTE: Be certain to route all power and control wires through conduit

outlet only and run probe wire up through center hole in ampli-

fier housing base.

1.7.3 Relay Wiring Chart

NOTES AND DEFINITIONS:

1. Equipment controlled by the Kotron relays is assumed to

be powered from one source, while the Kotron unit itself is

assumed to be powered from a different source.

2. Fail means a loss of power to the Kotron unit.

3. HLFS (high level fail-safe) means a material level in the

tank which is equal to or above:

a. The setting of a narrow differential point.

b. The higher setting of a wide differential point.

4. LLFS (low level fail-safe) means a material level in the tank

which is equal to or below:

a. The setting of a narrow differential point.

b. The lower setting of a wide differential point.

5. a. When the relay coil is de-energized, a connection is

made between terminals C (common) and NC (nor-

mally closed), and there is no connection between C

and NO (normally open).

b. When the relay coil is energized, a connection is made

between terminals C and NO, and there is no connec-

tion between C and NC.

6. If Relay 1 is being used as a dedicated diagnostic alarm,

the relay will always de-energize upon fault detection.

Kotron

Material

Fail-safe

Relay

Relay Terminals

Power

Level

Coil

CM to NC

CM to NO

High

HLFS

De-energized

Closed

Open

LLFS

Energized

Open

Closed

Low

HLFS

Energized

Open

Closed

LLFS

De-energized

Closed

Open

High

HLFS

De-energized

Closed

Open

Fail

LLFS

De-energized

Closed

Open

Low

HLFS

De-energized

Closed

Open

LLFS

De-energized

Closed

Open

822-1002-C01 Datasheet(PDF) 12 Page - Magnetrol International, Inc.

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