Honeywell UDC2500 Product Manual page 66

Configuration
Function Prompt
Lower Display
English Numeric
Code
CRANGE 502
OUTRNG 504
52
Selection or Range of Setting
Upper Display
English Numeric
CUR
RLYD
CURD
CURT
TCUR
4-20
0-20
UDC2500 Universal Digital Controller Product Manual
Code
CURRENT SIMPLEX—Type of output using
2
one 4 mA to 20 mA signal that can be fed
into a positive or negative grounded load of 0
to 1000 ohms. This signal can easily be
configured for 4-20 mA or 0-20 mA operation
via the CRANGE configuration, below.
TIME DUPLEX—This output algorithm uses
3
Digital Outputs 1 and 2 for Duplex Time
Proportional Control. The outputs are
updated per the Loop sampling rate
selection. Time Proportional Output has a
resolution of 4.44 msec. Cycle Time is
adjustable from 1 second to 120 seconds.
CURRENT DUPLEX is similar to current
4
simplex but uses a second current output.
The second output is usually scaled so that
zero and span correspond with 0 % and
50 % output (cool zone). When the output is
0 % to 50 %, the controller uses tuning
parameter set #2, when the output is 50 % to
100 % it uses set #1.
ATTENTION Other prompts affected: 4-20
RNG
CURRENT/TIME DUPLEX is a variation of
5
duplex with current active for 0 % to 50 %
output (tuning set 2) and time is active 50 %
to 100 % output (tuning set 1).
Relay controls heat, current controls cool.
ATTENTION Other prompts affected: 4-20
RNG
TIME CURRENT DUPLEX is similar to CUR
6
TI except that current is active for 50 % to
100 % and time is active for 0 % to 50 %.
Relay controls cool, current controls heat.
ATTENTION Other prompts affected: 4-20
RNG
CURRENT OUTPUT RANGE allows the
0
user to easily select 4-20 mA output or 0-20
1
mA output operation without the need for
recalibration of the instrument.
CURRENT DUPLEX RANGE ALGORITHM
— Used with Output Algorithm selections
CURD, CURT, or TCUR.
Parameter
Definition
4/07