Chapter 4 Parameter settings and functions
33
on the application (note that only the standard SSR can be used to control the SSR output
in OUT2.
Overlap/dead zone
In heating and cooling control, the SV (setpoint) overlaps between the heating and
cooling dead zones.
According to the SV value, DP is set to a positive value, and there is no control in the
dead zone interval. Therefore, the control operation amount MV is 0 in the dead zone
interval.
The overlap (heating and cooling simultaneous operation) zone is set to a negative
value according
Paramet
er group
Associated
parameter
Parame
ter
Setting range
Factory
default
Unit
Communicati
on address
Master
output
functions
PID-PID
PID-ON/OFF
ON/OFF-PID
CH1
dead
zone
- proportional
band ~
+
proportional
band
0.0
bit
400108(006BH)
ON/OFF-ON/OFF
-999 ~ 0 ~ 999
0
Set to 0 when no overlap/dead zone is used.
If the input is displayed in decimal, the display range is –999.9 ~ 999.9.
When the proportional bands are different, the smaller one takes
precedence.
There is a decimal point when the sensor type (input.H, input.L) is set to
input.L
Cooling load, temperature drop
Cooling output control
temperature
gontrol
l
temperature rises, Heating load
Heating output control
Input sensor (feedback)
cooling
control