Offset (Temp Offset) Function - SMC Networks HRL400-A 40 Series Operation Manual

HRX-OM-Z021
Chapter 5 Display and Setting of Various Functions
Operation
Chiller
Stop
Circulating fluid
temperature
"High" Upper
Temperature limit
+2
C
Circulating fluid set
temperature 20ºC
"Low" Lower
temperature limit
-2 C
ON
TEMP READY
signal
OFF
TEMP READY
ON
Alarm (AL12)
OFF
monitoring
Generate
TEMP
READY
No alarm
alarm(AL12)
Status (1): Start operation of the chiller.
Status (2): The temperature is in the "High/Low" range, but no "TEMP READY" signal is generated
since "Ready Time" is set at 300 sec at this point.
Status (3): The 300 sec count for "Ready Time" is reset since the temperature is now outside of the
"Low" range.
Status (4): The 300 sec count for "Ready Time" starts since the temperature is now within the
"High/Low" range.
Status (5): "TEMP READY" signal is generated at this point since the temperature remains in the
"High/Low" range for 300 sec of "Ready Time."
Monitoring of "TEMP READY alarm (AL12)" does not start since "Start Time" is set at 1000
sec.
Status (6): Monitoring of "TEMP READY alarm (AL12)" starts at this point where 1000 sec of "Start
Time" has elapsed.
Status (7): "TEMP READY" signal output continues since the temperature is now back within the "Out
Time" range of 200 sec even though it was temporarily outside the "Low" range.
Status (8): "TEMP READY" signal turns OFF when 200 sec has passed after the temperature rises
above the "High" range. "TEMP READY alarm (AL12)" is simultaneously activated.
・
Offset
(TEMP OFFSET) function
5.4 Description of the Screen
5-28
1000sec
150sec
(1)
300sec
(2)
(4)
(3)
Fig. 5-6 TEMP READY signal chart
(6)
(7)
(5)
Time
(8)
200sec
100sec
HRL Series