Danfoss VLT HVAC Series Programming Manual page 208

3 Parameter Description
21-09 PID Auto Tuning
Option:
[0] * Disabled
3
[1] Enabled Ext PID 1
[2] Enabled Ext PID 2
[3] Enabled Ext PID 3
3.19.3 21-1* Closed-loop 1 Ref/Feedback
Configure Extended Closed-loop 1 Controller reference and feedback.
21-10 Ext. 1 Ref./Feedback Unit
Option:
[0]
[1] * %
[5] PPM
[10] min
[11] RPM
[12] PULSE/s
[20] liter / sec.
[21] liter / min
[22] liter / hr.
[23] m³ / sec.
[24] m³/min
[25] m³ / hr.
[30] kg / sec.
[31] kg/min
3-184
Function:
This parameter enables selection of the extended PID controller to be autotuned and starts the PID
autotuning for that controller. Once the autotuning has successfully completed and the settings have
been accepted or rejected by the user, by pressing [OK] or [Cancel] buttons on the LCP at the end
of tuning, this parameter is reset to [0] Disabled.
Function:
Select the unit for the reference and feedback.
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