94(108)
control, Auto-tuning is needed if deviation of control is a little bit large. Press
AT key and LED light begins flashing to start Auto-tuning. When flashing ends,
Auto-tuning finishes and parameters will be automatically saved. During
Auto-tuning, pressing AT key will exit Auto-tuning process; controller will
conduct temperature control based on parameters set before Auto-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
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