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CHAPTER 4 FUNCTIONS
4
4.6 Auto Tuning Function
(2) Buffer memory areas related to auto tuning
Auto tuning can be executed when the following data are set. Note that other data must be preset to the values
used for actual operation since actual control starts on completion of auto tuning.
When "0" is set to the proportional band (P)/heating proportional band (Ph), auto tuning is not executed.
( Page 105, Section 3.4.2 (15))
(3) Storing the calculated value after auto tuning
After auto tuning is completed, the calculated values are stored into the following buffer memory areas.
*1 A value twice greater than the one in CH Integral time (I) setting (Un\G36, Un\G68, Un\G100, Un\G132) is
automatically set. However, if this setting is 0(s) when auto tuning is in process, the loop disconnection detection
judgment time is not stored.
Buffer memory area name
Buffer memory address
Reference
CH1 CH2 CH3 CH4
CH Input range Un\G32 Un\G64 Un\G96 Un\G128 Page 96, Section 3.4.2 (12)
CH Set value (SV) setting Un\G34 Un\G66 Un\G98 Un\G130 Page 104, Section 3.4.2 (14)
CH Upper limit output limiter Un\G42 Un\G74 Un\G106 Un\G138
Page 110, Section 3.4.2 (19)
CH Lower limit output limiter Un\G43 Un\G75 Un\G107 Un\G139
CH Heating upper limit output limiter Un\G42 Un\G74 Un\G106 Un\G138
CH Cooling upper limit output limiter Un\G721 Un\G737 Un\G753 Un\G769
CH Output variation limiter setting Un\G44 Un\G76 Un\G108 Un\G140 Page 112, Section 3.4.2 (20)
CH Sensor correction value setting Un\G45 Un\G77 Un\G109 Un\G141 Page 113, Section 3.4.2 (21)
CH Control output cycle setting Un\G47 Un\G79 Un\G111 Un\G143
Page 114, Section 3.4.2 (23)CH Heating control output cycle setting Un\G47 Un\G79 Un\G111 Un\G143
CH Cooling control output cycle setting Un\G722 Un\G738 Un\G754 Un\G770
CH Primary delay digital filter setting Un\G48 Un\G80 Un\G112 Un\G144 Page 115, Section 3.4.2 (24)
CH AUTO/MAN mode shift Un\G50 Un\G82 Un\G114 Un\G146 Page 117, Section 3.4.2 (26)
CH AT bias Un\G53 Un\G85 Un\G117 Un\G149 Page 120, Section 3.4.2 (29)
CH Forward/reverse action setting Un\G54 Un\G86 Un\G118 Un\G150 Page 121, Section 3.4.2 (30)
CH Auto tuning mode selection Un\G184 Un\G185 Un\G186 Un\G187 Page 136, Section 3.4.2 (51)
Buffer memory area name
Buffer memory address
Reference
CH1 CH2 CH3 CH4
CH Proportional band (P) setting Un\G35 Un\G67 Un\G99 Un\G131
Page 105, Section 3.4.2 (15)
CH Heating proportional band (Ph)
setting
Un\G35 Un\G67 Un\G99 Un\G131
CH Cooling proportional band (Pc)
setting
Un\G720 Un\G736 Un\G752 Un\G768
CH Integral time (I) setting Un\G36 Un\G68 Un\G100 Un\G132 Page 107, Section 3.4.2 (16)
CH Derivative time (D) setting Un\G37 Un\G69 Un\G101 Un\G133 Page 107, Section 3.4.2 (17)
CH Loop disconnection detection
judgment time
*1
Un\G59 Un\G91 Un\G123 Un\G155 Page 124, Section 3.4.2 (33)