Speed Pid Ctrl - Danfoss VLT AutomationDrive EZ FC 321 Programming Manual

VLT® AutomationDrive EZ FC 321
Programming Guide
External Set-point
Illustration 64: Speed Trim
The drawing shows a single-source setup where the master sends the torque signal to all followers. The number of available analog
outputs on the master limits this setup. To overcome the limitation of the number of analog outputs, use a cascade principle. The
cascade principle makes the control slower and less accurate compared with the setup using analog outputs.

4.8.3 7-0* Speed PID Ctrl.

If separate encoders are used, adjust the ramp-related parameters according to the gear ratio between the 2 encoders.
Parameter 7-00 Speed PID Feedback Source
Table 366: Parameter 7-00 Speed PID Feedback Source
7-00 Speed PID Feedback Source
Default value: Size related
Conversion index: –
Option Name
[0] Motor feedb. P1-02
[1] 24V encoder 32/33
[6] Analog input 53
190 | Danfoss A/S © 2021.08
Drive 1
Set-point
Ramp
Calculation
Drive 2
Set-point
Ramp
Calculation
Drive 3
Set-point
Ramp
Calculation
N O T I C E
Parameter type: Option
Data type: Uint8
Description
Use the feedback source selected as motor feedback in parameter 1-02 Flux Motor Feedback
Source.
Single signal generated from 24 V High Threshold Logic (HTL) encoder connected to terminals 32
and 33. Configure the 24 V encoder interface in parameter group 5-7* 24V Encoder Input. Program
terminals 32/33 to [0] No operation.
Speed
PID
Speed
-
PID
Droop
Speed
-
PID
Droop
Setup: All setups
Change during operation: False
Parameter Descriptions
Torque
M1
PID
Torque
M2
PID
Torque
M3
PID
AU373327181955en-000101 / 130R1208