Omron M1 Series User Manual

6-2
V/f control with speed feedback
The 3G3M1 Series Inverter can perform V/f control with speed feedback by using the pulse train input
function mounted as standard.
This control enables highly accurate and stable speed control based on the feedback of the pulse gen-
erator (PG) signal or the phase A/B signals from the encoder.
This section describes the settings and functions of V/f control with speed feedback.
6-2-1
Settings of V/f Control with Speed Feedback
In this control mode, the inverter can perform highly accurate and stable speed control as V/f control,
based on the speed feedback data.
• To use this function, set “3: IM V/f control with speed sensor” at 1st Drive Control Selection
(F42)/2nd Drive Control Selection (A14).
• Set the type of the pulse train signal to input in Input Terminal [PIA][PIB] Pulse Input Format Selec-
tion (d14), and the number of pulses per one rotation of the motor (×1 multiplication) in Input Termi-
nal [PIA][PIB] Encoder Pulse Resolution (d15).
• Set values in Input Terminal [PIA][PIB] Pulse Scaling Factor Denominator (d16) and Input Terminal
[PIA][PIB] Pulse Scaling Factor Numerator (d17) according to the speed reduction ratio of the motor
and encoder.
Parameter
No.
Function name Data
Default da-
ta
Unit
F42/A14
1st Drive Control Selec-
tion/
2nd Drive Control Selec-
tion
3: IM V/f control with speed sensor 0 -
d14
Input Terminal [PIA][PIB]
Pulse Input Format Selec-
tion
0: Pulse train signing/pulse train input
1: Forward/reverse rotation pulse
2: Quadrature A/B signal (B phase lead)
3: Quadrature A/B signal (A phase lead)
2 -
d15
Input Terminal [PIA][PIB]
Encoder Pulse Resolution
20 to 60000 1024 Pulse
d16
Input Terminal [PIA][PIB]
Pulse Scaling Factor De-
nominator
1 to 32767 1 -
d17
Input Terminal [PIA][PIB]
Pulse Scaling Factor Nu-
merator
1 to 32767 1 -

Details of Input Terminal [PIA][PIB] Pulse Input Format Selection (d14)
The Input Terminal [PIA][PIB] Pulse Input Format Selection (d14) setting causes the inverter to rec-
ognize the feedback rotation direction as shown below.
6 Vector Control and Applied Functions
6-11
M1 Series Standard Type User's Manual (I669)
6-2 V/f control with speed feedback
6
6-2-1 Settings of V/f Control with Speed Feedback

Omron M1 Series Specifications

General

Brand	Omron
Model	M1 Series
Category	Inverter
Language	English