10 alarm functions, Able 10 (p. 25) and t, Alty – Watlow Series 935A User Manual

Page 27: Ahys, Denc] [deno] [prnc] [prno

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Watlow Series 935A User’s Manual

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Table 10 - Alarm Functions

Set Point

Deviation
normally
closed

Deviation
normally
open

Process
normally
closed

Process
normally
open

Non-Alarm State
LED off
Alarm Output:

Alarm State
LED on
Alarm Output Status:

Function

A deviation alarm
tracks set point.

A process alarm
is a fixed value,
independent
of set point.

Alarm High Region

Alarm Low Region

Safe
Area

Safe
Area

Alarm Type

Alarm Hysteresis is the change in the process variable (actual)
required to clear the alarm relay after an alarm occurs.

Alarm High Region

Alarm Low Region

0

Silenced-Alarm State
LED off
Alarm Output Status:

Power-Off State
LED off
Alarm Output Status:

Deviation Alarm

Process Alarm

[ALtY]

[dEnc]

[dEno]

[Prnc]

[Prno]

[AhYS]

[AhYS]

[AhYS]

[AhYS]

[AhYS]

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