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LOW / HIGH
→
If object value is PV, direction in which it is
turned ON is set up for the point that is set up next.
LOW :
Output is OFF when the reverse operation (heating) PV is
at a high temperature output OFF.
HIGH :
Output is ON when the direct operation (freezing) PV is
at a high temperature output ON.
3. Operation range : Setup items vary depending on the operation types.
— Case of PV / ABS (Setup : LOW or HIGH range)
Absolute value (operating point) , Operation differential, DELAY time.
— Case of PV / DEV (Setup: LOW or HIGH range)
Deviation, Operation differential, DELAY time.
— Case of SP and DV (Setup: ON or OFF range)
Maximum value, Minimum value, DELAY time.
— DELAY time : The delay time of setup is over-lapsed until it becomes ON or OFF
condition setup, the output comes out. Within DELAY time, if the
conditions are cancelled, there will be no output.
4. Example case of PV, DEV selection
— Operation direction = LOW
— Operation direction = HIGH
▲
SP
- deviation
OFF
ON
PV
→
high
▲
SP
+ deviation
OFF
ON
PV
→
high
Operation differential
Operation differential
▲
SP
- deviation
OFF
ON
PV
→
high
▲
SP
+ deviation
ON
PV
→
high
OFF
Operation differential
Operation differential