Honeywell UDC2800 Product Manual page 77

Chapter 4 - Configuration
Function
Prompt
Lower Display
A2S2 Value
A2S2 State
A2S2
Hysteresis
ALARM
Output1
Alarm
Blocking
77
Selection or Range
of Setting
Upper Display
HIGH Alarm
LOW Alarm
0.0 to 100.0 % of
span or full output
as appropriate
Non-latching
Latching
Parameter
Definition
The selections are the same as A1S1 Type.
ATTENTION: Not applicable with Relay
Duplex unless using Dual Relay PWA.
ALARM 2 SETPOINT 2 VALUE—This is the
value at which you want the alarm type chosen
in prompt A2S2 Type to actuate.
The details are the same as A1S1 VAL.
ALARM 2 SETPOINT 1 STATE—Same as
A1S1HL.
ALARM HYSTERESIS—A single adjustable
hysteresis is provided on alarms such that
when the alarm is OFF it activates at exactly
the alarm setpoint; when the alarm is ON, it
will not deactivate until the variable is 0.0 % to
100 % away from the alarm setpoint.
Configure the hysteresis of the alarms based
on INPUT signals as a % of input range span.
Configure the hysteresis of the alarm based on
OUTPUT signals as a % of the full scale output
range.
LATCHING ALARM OUTPUT 1—Alarm output 1
can be configured to be Latching or Non-
latching.
Non-latching
Latching
ATTENTION: When configured for
latching, the alarm will stay active after
the alarm condition ends until the
RUN/HOLD key is pressed.
ALARM BLOCKING—Prevents nuisance alarms
when the controller is first powered up. The