Trane TR200 Series Programming Manual page 196

20-72 PID Output Change
Range:
0.10 N/ [0.01 - 0.50 N/A]
A*
20-73 Minimum Feedback Level
Range:
-999999. [-999999.999 - par. 20-74
000 ProcessCtrlUnit]
Proc-
essCtrlU-
nit*
20-74 Maximum Feedback Level
Range:
999999. [par. 20-73 - 999999.999
000 ProcessCtrlUnit]
Proc-
essCtrlU-
nit*
20-79 PID Autotuning
Option:
[0] * Disabled
[1] Enabled
TR200 Programming Guide
Function:
This parameter sets the magnitude of step change during autotuning.
The value is a percentage of full speed. I.e. if maximum output frequency
inpar.4-13 Motor Speed High Limit
Limit [Hz] is set to 50Hz, 0.10 is 10% of 50Hz, which is 5Hz. This parameter
should be set to a value resulting in feedback changes of between 10%
and 20% for best tuning accuracy.
Function:
The minimum allowable feedback level should be entered here in User
units as defined in par.20-12
below par.20-73 Minimum Feedback
error message will appear on the keypad.
Function:
The maximum allowable feedback level should be entered here in User
units as defined in par.20-12
above par.20-74 Maximum Feedback
error message will appear on the keypad.
Function:
This parameter starts the PID autotuning sequence. Once the autotuning
has successfully completed and the settings have been accepted or re-
jected by the user, by pressing [OK] or [Cancel] buttons on the keypad at
the end of tuning, this parameter is reset to [0] Disabled.
Parameter Description
[RPM]/par.4-14 Motor Speed High
Reference/Feedback Unit. If the level falls
Level, autotuning is aborted and an
Reference/Feedback Unit. If the level rises
Level, autotuning is aborted and an
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