Configuration

3.14 Alarms Set Up Group

Introduction

An alarm is an indication that an event that you have configured (for example—Process Variable) has exceeded one or more alarm limits. There are two alarms available. Each alarm has two setpoints. You can configure each of these two setpoints to alarm on various controller parameters.

There are two alarm output selections, High and Low. You can configure each setpoint to alarm either High or Low. These are called single alarms.

You can also configure the two setpoints to alarm on the same event and to alarm both high and low. A single adjustable Hysteresis of 0 % to 100 % is configurable for the alarm setpoint.

See Table 2-3in the Installation section for Alarm relay contact information.

The prompts for the Alarm Outputs appear whether or not the alarm relays are physically present. This allows the Alarm status to be shown on the display and/or sent via communications to a host computer.

Function Prompts

Table 3-15 ALARMS Group (Numeric Code 1100) Function Prompts

Function Prompt

Selection or Range of Setting

Parameter

Lower Display

Upper Display

Definition

English

Numeric

English

Numeric

 

 

Code

 

Code

 

A1S1TY

1101

 

 

ALARM 1 SETPOINT 1 TYPE—Select what

 

 

 

 

you want Setpoint 1 of Alarm 1 to represent.

 

 

 

 

It can represent the Process Variable,

 

 

 

 

Deviation, Input 1, Input 2, Output, and if you

 

 

 

 

have a model with communications, you can

 

 

 

 

configure the controller to alarm on SHED. If

 

 

 

 

you have setpoint programming, you can

 

 

 

 

alarm when a segment goes ON or OFF.

 

 

NONE

0

NO ALARM

 

 

IN 1

1

INPUT 1

 

 

IN 2

2

INPUT 2

 

 

PROC

3

PROCESS VARIABLE

 

 

DE

4

DEVIATION

 

 

OUT

5

OUTPUT (NOTE 1)

 

 

SHED

6

SHED FROM COMMUNICATIONS

 

 

E-ON

7

EVENT ON (SP PROGRAMMING)

 

 

E-OF

8

EVENT OFF (SP PROGRAMMING)

 

 

MAN

9

ALARM ON MANUAL MODE (NOTE 2)

 

 

RSP

10

REMOTE SETPOINT

 

 

FSAF

11

FAILSAFE

 

 

PrRT

12

PV RATE OF CHANGE

 

 

DI 1

13

DIGITAL INPUT 1 ACTUATED (NOTE 7)

 

 

DI 2

14

DIGITAL INPUT 2 ACTUATED (NOTE 7)

 

 

BRAK

15

LOOP BREAK (NOTE 4)

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UDC2500 Universal Digital Controller Product Manual

4/07

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Honeywell UDC2500 manual Alarms Set Up Group