Sonic Alert DCP301 user manual Cool

Chapter 7. PARAMETER SETUP

Note 1) On heat/cool models, this sets how the relationship between heat-side output and cool-side output should be processed with respect to the MV resulting from PID operation.

Dead zone<0 Dead zone=0

100%			100%
	Dead
Control output	zone
values	Output	Output	Output	Output
0%	(cool)	(heat)	(cool)	(heat)
		MV	0%	MV
	50%	100%	50%	100%

Dead zone>0

100%
Dead
zone
Output	Output
(cool)	(heat)
0%	MV
50%	100%

Note 2) Constants OL and OH function as follows:

100%

Cool-side OH

Heat-side OL 0%

Cool-side	Heat-side
output	output	Heat-side OH
		Cool-side OL
		MV
50%		100%

Note 3) When MV ≥ 50%, the heat-side PID set is switched to. When MV < 50%, the cool-side PID set is switched to.

Note 4) PID set selection is carried out by setting value and external switch.

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