6 Parameter Settings and Functions
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For heating & cooling control, OUT1 control output is dedicated to heating control and OUT2
control output to cooling control.
6.2.1.3.1. Dead band/Overlap band [PAR2 → DB]
In heating & cooling control, it is possible to designate a dead band between heating & cooling
control bands based on set value(SV).
A dead band forms around the SV when positive (+) value is set. No control occurs in the dead
band area. Therefore, heating & cooling MVs become 0.0% in the formed dead band.
An overlap band (simultaneous application of heating & cooling MVs) forms around the SV when
negative (-) value is set.
Set as 0 when a dead band or an overlap band is not used.
When setting integration time, it is applied when the intengration time of heating control and
cooling control is set. In case of PI-P control and P-PI control, it also operates as P-P control.
Parameter Setting range
Unit
PAR2 DB See below.
PID/PID, PID/ON-OFF, and ON-OFF/PID Control
Set range (temperature): -(proportional band) to +(proportional band) (the lower value
when using different proportional bands)
Set range (analog): -99.9 to 099.9
Factory default: 0000 (temperature H), 000.0 (temperature L, analog),
(unit: temperature ℃/℉, analog % F. S. )
ON-OFF/ON-OFF Control
Set range (temperature):
-999 (overlap band) to 0000 (not used) to 0999 (dead band) (temperature H)
-199.9 (overlap band) to 000.0 (not used) to 999.9 (dead band) (temperature L)
Set range (analog): -99.9 (overlap band) to 000.0 (not used) to 099.9 (dead band)
Factory default: 0000 (temperature H), 000.0 (temperature L, analog),
(unit: temperature ℃/℉, analog % F. S. )
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