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 2-3 in 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 3-14 ALARMS Group Function Prompts
Function Prompt
Lower Display
Selections or
Range of Setting
Upper Display
Parameter
Definition
A1S1 VAL
Value in engineering units
ALARM 1 SETPOINT 1 VALUE—This is the value
at which you want the alarm type chosen in prompt
A1S1TYPE to actuate. The value depends on what
the setpoint has been configured to represent. No
setpoint is required for alarms configured for
Communications SHED. For SP Programming the
value is the segment number for which the event
applies.
This prompt does not appear for “Alarm on Manual”
type alarm. For example: A1S1TYPE = MANUAL.
A1S2 VAL
Value in engineering units
ALARM 1 SETPOINT 2 VALUE—This is the value
at which you want the alarm type chosen in prompt
A1S2TYPE to actuate.
The details are the same as A1S1 VAL.
A2S1 VAL
Value in engineering units
ALARM 2 SETPOINT 1 VALUE—This is the value
at which you want the alarm type chosen in prompt
A2S1TYPE to actuate.
The details are the same as A1S1 VAL.
A2S2 VAL
Value in engineering units
ALARM 2 SETPOINT 2 VALUE—This is the value
at which you want the alarm type chosen in prompt
A2S2TYPE to actuate.
The details are the same as A1S1 VAL.
12/04 UDC3200 Universal Digital Controller Product Manual 87
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