Eclipse UDC2500 Limit - Limit Set up Group; Table 3-5 LIMIT Group Function Prompts

Configuration
30 UDC2500 Universal Digital Limit ControllerProduct Manual 8/05
3.5 Limit Set Up Group
Introduction
This data deals with the type of Limit Control you want, power up Logic, setpoint high
and low limits, and the default display function Prompts
Table 3-5 LIMIT Group Function Prompts
Function Prompt
Lower Display
Selection or Range of Setting
Upper Display
Parameter
Definition
LOorHI
LOW
HIGH
LOW - Limit Control - latching relay de-
energizes when PV goes below configured
setpoint; cannot be reset until PV rises
above configured setpoint and M-A RESET
key is pressed.
HIGH - Limit Control - latching relay de-
energizes when PV goes above configured
setpoint; cannot be reset until PV drops
below configured setpoint and M-A RESET
key is pressed.
POWRUP
RST
NORM
RST - after power down, the controller
latching relay will have to be reset.
NORM - after power down, the controller will
operate normally in the same mode as
before power was removed unless a limit has
been exceeded. If the limit was latched at
power down, the unit will be in “Limit” at
power up and have to be reset.
SP_MAX
0 % to 100 % of input in
engineering units
HIGH SETPOINT LIMIT - this selection
prevents the setpoint from going above the
value selected here. The setting must be
equal to or less than the upper range of the
input.
SP_MIN
0 % to 100 % of input in
engineering units
LOW SETPOINT LIMIT - this selection
prevents the setpoint from going below the
value selected here. The setting must be
equal to or greater than the lower range of
the input.
DISPLY
PROC
SP
PROC - Process Variable - PV will be
displayed in the upper display.
SP - Setpoint - if configured the setpoint will
be displayed in the upper display. “SP” will
appear in the lower display.