52(65)
control, Auto-tuning is needed if deviation of control is a little bit large. Press
AT key and LED light begins flashing to enter Auto-tuning. When flashing is
ended, Auto-tuning finished and parameters will auto saved. During
Auto-tuning, press AT key will exit Auto-tuning process, controller will conduct
temperature control based on parameters beforeAuto-tuning.
Picture 4-12: Operation Screen
4.4
Parameter Reference Table
English Name
Description
Range
Default
Control pv
Control temp.
-50~500
℃
-
Ret pv
Retrieved water temp.
-50~500
℃
-
Ent pv
Entered water temp.
-50~500
℃
-
Sv
Control taget temp.
-50~500
℃
-50
℃
Hout
Amount of heating output
0~100%
0%
Cout
Amount of cooling output
0~100%
0%
Pb
Heating proportional band
0~550
℃
20
℃
Ti
Integral time
1~3600s
240s
Td
Derivative time
1~3600s
60s
Pbc
Derivative time
0~550
℃
20
℃
Ct
Time for heating output
1~100s
15s
Ctc
Time for cooling output
1~100s
15s
Phase alarm
Use for phase check
ON/OFF
OFF
Dev1 alarm
Alarm for deviation between
control temp. and entered water
temp.
0~550
℃
(0=off)
0=off
Dev2 alarm
Alarm for deviation between
entered water temp. and
retrieved water temp.
0~550
℃
(0=off)
0=off
Turb. Alarm
Alarm for sudden temp. drop
0~550
℃
/s (0=off)
0=off
Summary of Contents for STM-1220-PW
Page 1: ...STM PW Series Hi Temp Water Heater Date Dec 2014 Version Ver B English ...
Page 2: ......
Page 25: ...25 65 2 3 2 Control Circuit STM PW 400V Picture 2 6 Control Circuit STM PW 400V ...
Page 29: ...29 65 2 3 5 Main Circuit STM PW 230V Picture 2 8 Main Circuit STM PW 230V ...
Page 30: ...30 65 2 3 6 Control Circuit STM PW 230V Picture 2 9 Control Circuit STM PW 230V ...
Page 62: ...62 65 ...
