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14.4 Control Structure in Flux Sensorless
Ref.
+
Illustration 14.3 Control Structure in Flux Sensorless Open-Loop and Closed-Loop Configurations
In Illustration 14.3, parameter 1-01 Motor Control Principle is set to [2] Flux Sensorless and parameter 1-00 Configuration Mode is
set to [0] Speed open loop. The resulting reference from the reference handling system is fed through the ramp and speed
limitations as determined by the parameter settings indicated.
An estimated speed feedback is generated to the speed PID to control the output frequency. The speed PID must be set
with its P,I, and D parameters (parameter group 7-0* Speed PID Ctrl).
To use the process PID control for control of speed or pressure in the controlled application, for example, select [3] Process
in parameter 1-00 Configuration Mode. The process PID parameters are found in parameter group 7-2* Process Ctrl. Feedback
and parameter group 7-3* Process PID Ctrl.
14.5 Control Structure in Flux with Motor Feedback
14
14
Ref.
P 7-20 Process feedback
1 source
P 7-22 Process feedback
2 source
Illustration 14.4 Control Structure in Flux with Motor Feedback Configuration (only Available in VLT
132
P 1-00
Con g. mode
Process
PID
_
P 7-20 Process feedback
1 source
P 7-22 Process feedback
2 source
P 1-00
Con g. mode
P 7-2*
+
Process
PID
_
Danfoss A/S © 6/2016 All rights reserved.
®
VLT
Parallel Drive Modules
P 4-13 Motor speed
high limit [RPM]
P 4-14 Motor speed
high limit [Hz]
High
P 3-**
+
Ramp
Low
P 4-11 Motor speed
low limit [RPM]
P 4-12 Motor speed
low limit [Hz]
P 4-13 Motor speed
high limit (RPM)
P 4-14 Motor speed
high limit (Hz)
High
P 3-**
+
Ramp
_
Low
P 7-00
P 4-11 Motor speed
PID source
low limit (RPM)
P 4-12 Motor speed
low limit (Hz)
P 7-0*
Motor
Speed
controller
PID
_
P 1-00
Con g. mode
Torque
P 7-0*
Speed
Motor
PID
controller
®
AutomationDrive FC 302)
P 4-19
Max. output
freq.
+f max.
-f max.
P 4-19
Max. output
freq.
+f max.
-f max.
MG37N102
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