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CHAPTER 4 FUNCTIONS
4
4.3 Control Method
(b) Heating-cooling control
The module operates as follows outside the range of CH Adjustment sensitivity (dead band) setting (Un\G46,
Un\G78, Un\G110, Un\G142).
(c) Three-position control
Three-position control can also be performed by setting a dead band.
For more details, refer to the following.
Page 261, Section 4.26 (3)
(d) Setting method
Set 0 in the following buffer memory areas.
•CH Proportional band (P) setting (Un\G35, Un\G67, Un\G99, Un\G131) ( Page 105, Section 3.4.2
(15))
•CH Heating proportional band (Ph) setting (Un\G35, Un\G67, Un\G99, Un\G131) ( Page 105,
Section 3.4.2 (15))
Condition
Heating transistor
output status
Cooling transistor
output status
The temperature process value (PV) is below the lower limit of
the adjustment sensitivity (dead band).
ON OFF
The temperature process value (PV) is above the upper limit of
the adjustment sensitivity (dead band).
OFF ON
Temperature
process value (PV)
Time
Adjustment sensitivity
(dead band)
Heating output
(L1H)
Cooling output
(L1C)
Set value (SV)
OFF
ON
ON
OFF