6 Parameter Settings and Functions
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6.3.4.2 Auto-tuning Mode Settings
Auto-tuning is available in Tun1 MODE (SV) or Tun2 MODE (70% of SV), depending
on the baseline value used.
Tun1 Mode [TUN1]: Auto-tunes and calculates a PID time constant based on SV.
Tun2 Mode [TUN2]: Auto-tunes and calculates a PID time constant based on 70% of
SV.
Group
Preceding
Condition
Parameter Range
Factory
Default
Unit
Initial Setting Group PID Auto-tuning Mode
Tun1
Tun2
Tun1 -
In cooling control mode, TUN2 Mode calculates 70% based at 0°.
EX) If SV is -100, executes TUN2 at -70.
6.4 Alarm Output
Alarm output is a relay output that activates irrespective of control output.
Alarm output works when the temperature of the controlled subject exceeds or falls
below the preset temperature range.
Alarm temperature setting values consist of absolute temperatures or offset
temperatures, depending on the alarm output mode.
Alarm output function is only for TM2 series.