Honeywell UDC2500 manual Crange, Outrng, Current Duplex Range Algorithm

Configuration

Function Prompt		Selection or Range of Setting			Parameter
Lower Display		Upper Display			Definition
English	Numeric	English	Numeric
	Code		Code
		CUR	2	CURRENT SIMPLEX—Type of output using
				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.
		RLYD	3	TIME DUPLEX—This output algorithm uses
				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.
		CURD	4	CURRENT DUPLEX is similar to current
				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.
					Other prompts affected: 4-20
				ATTENTION
				RNG
		CURT	5	CURRENT/TIME DUPLEX is a variation of
				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.
					Other prompts affected: 4-20
				ATTENTION
				RNG
		TCUR	6	TIME CURRENT DUPLEX is similar to CUR
				TI except that current is active for 50 % to
				100 % and time is active for 0 % to 50 %.
				Relay controls cool, current controls heat.
					Other prompts affected: 4-20
				ATTENTION
				RNG
CRANGE	502	4-20	0	CURRENT OUTPUT RANGE allows the
				user to easily select 4-20 mA output or 0-20
		0-20	1
				mA output operation without the need for
				recalibration of the instrument.
OUTRNG	504			CURRENT DUPLEX RANGE ALGORITHM
				— Used with Output Algorithm selections
				CURD, CURT, or TCUR.

52 UDC2500 Universal Digital Controller Product Manual 4/07