HRX-OM-I051
Chapter 8 Appendix
8.4 Offset Function
HRZ Series
8-18
8.4 Offset Function
Potential deviations in temperature between this system and your system may be
concerned depending on the installation environment. The offset function falling
into three types (MODE1 to 3) is assigned to calibrate deviations in temperature.
See the following descriptions for the offset function. See section 5.3.9 “Initial
Setting screen” for setting.
TEMP PV value, which is displayed on the Status screen, is output as circulating
fluid temperature data in terms of communication.
When MODE1 is selected
This mode is used to exercise temperature control to allow the discharge
temperature of the circulating fluid to be “TEMP SP value + OFFSET value”.
TEMP PV value denotes the discharge temperature of the circulating fluid.
E.g.: TEMP SP value: +20°C, OFFSET value: +2°C
Circulating fluid discharge temp.:
+22°C, TEMP PV
:
+22°C
When MODE2 is selected
This mode is used to exercise temperature control to allow the discharge
temperature of the circulating fluid to be “TEMP SP value”.
TEMP PV value denotes “Circulating fluid discharge temp. value + OFFSET
value”.
E.g.: TEMP SP value: +20°C, OFFSET value: +2°C
Circulating fluid discharge temp.:
+20°C, TEMP PV
:
+22°C
When MODE3 is selected
This mode is used to exercise temperature control to allow the discharge
temperature of the circulating fluid to be “TEMP SP value + OFFSET value”.
TEMP PV value denotes “Circulating fluid discharge temp. value - OFFSET
value”.
E.g.: TEMP SP value: +20°C, OFFSET value: +2°C
Circulating fluid discharge temp.:
+20°C, TEMP PV
:
+20°C
When OFF is selected
If no mode is selected, temperature control is conducted to allow the discharge
temperature of the circulating fluid to be “TEMP SP value”.
