Honeywell UDC2800 User Manual

Function
Prompt
Selections or Range
of Setting
Parameter Definition
you to force the trigger time of an alarm to
delay for a time period of from 0 to 30
seconds in an alarm condition.
A2S2
Hysteresis
0.0 to 100.0 % of
span or full output as
appropriate
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.
Alarm Output 1 Latching Alarm Output 1 —Alarm output 1
can be configured to be Latching or Non-
latching.
Non Latching Non-latching
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 Alarm Blocking —Prevents nuisance alarms
when the controller is first powered up. The
alarm is suppressed until the parameter gets
to the non-alarm limit or band. Alarm
blocking affects both alarm setpoints.
Disable Disables blocking
Alarm 1 Blocks alarm 1 only
Alarm 2 Blocks alarm 2 only
Alarm 1 & 2 Blocks both alarms
159
Chapter 4 - Configuration

Honeywell UDC2800 Specifications

General

Control Modes	PID, ON/OFF, Manual
Mounting	Panel Mount
Display	Dual 4-digit LED
Input Types	Thermocouple, RTD, mA, mV, V
Output Types	Relay
Power Supply	100-240 VAC, 50/60 Hz
Communication	RS-485 Modbus RTU
Enclosure Rating	NEMA 4X