29Cooling-side proportional band shift (Dead band/Overlap band)(Option: Available for DUAL output only) (Setting range: - 50.0 to +50.0)[Description]• This parameter is used for shifting the cooling-side pro-portional band from the set value. (See the figure below.)[Setting example] Shifting the cooling-side proportional band by 2.0Press and hold theSEL key for three seconds.will be displayed on the PV display.Press the key to display .Press theSEL key once.The current setting ( ) flashes on the SV display.Press the or keys to display .Press theSEL key once. will stop flashing and will be registered for . After that, thecontroller will operate with being 2.0 %.If you want to display the operation status, press and hold theSEL key for two seconds.Operating procedureDisplay1.2.3.4.5.6.• Related parameters: (page 24)• When is a positive value, it is called the “Dead band”,and when it is a negative value, the “Overlap band”.• Since the unit of is same one used for MV [%], if youwant to set in the unit of deviation [%], must beconverted using the equation below.OutputHeating side Cooling sideOverlapbandDeadbandMV MVMV=50%Ex) When making a dead band with a deviation of1.0 [%] from the SV while the proportionalband (P) is 5.0%:DB [%] = 1.0 × = 20 [%]1005.0100PDB [%] = Deviation × [%]Consequently, set the parameter to 20 [%].www. .com information@itm.com1.800.561.8187
