Multi-Speed And Jog Frequency Setting - Omron MX2 User Manual

"A" Group: Standard Functions
!Tip
3-5-3

Multi-speed and Jog Frequency Setting

Func.
Code
a019
A020
A220
74
The example graph below shoes a typical analog input waveform. The filter
removes the noise spikes. When a speed change (such as level increase)
occurs, the filter naturally has a delayed response. Due to the deadband fea-
A016 31
ture ( = ), the final output changes only when the 30-sample average
moves past the deadband threshold.
The deadband feature is useful in applications that requires a very stable out-
put frequency but use an analog input for the speed reference. Example appli-
cation: A grinding machine uses a remote potmeter for operator speed input.
After a setting change, the grinder maintains a very stable speed to deliver a
uniform finished surface.
=
A016 31
Hz
Output freq.
reference
+0.1
16-sample avg.
0
-0.1
Analog input
Multi-speed - The MX2 inverter has the capability to store and output up to
16 preset frequencies to the motor (
minology, we call this multi-speed profile capability. These preset frequencies
are selected by means of digital inputs to the inverter. The inverter applies the
current acceleration or deceleration setting to change from the current output
frequency to the new one. The first multi-speed setting is duplicated for the
second motor settings (the remaining 15 multi-speeds apply only to the first
motor).
"A" Function
Name
Multi-speed operation selection
Multi-speed freq. 0
nd
Multi-speed freq. 0, 2 motor
Small step change
Threshold exceeded
Deadband
Speed increase given
Noise spikes
A020 A035
to
Description
Select codes:
00... Binary operation (16 speeds
selectable with 4 terminals)
01... Bit operation (8 speeds
selectable with 7 terminals)
Defines the first speed of a multi-
speed profile, range is 0.0 / start
*1
frequency to 400Hz
A020 = Speed 0 (1st motor)
Defines the first speed of a multi-
nd
speed profile or a 2 motor,
range is 0.0 / start frequency to
*1
400Hz
A220 = Speed 0 (2nd motor)
Section 3-5
New deadband
). As in traditional motion ter-
Run Defaults
Mode
EU Units
Edit
00 -
6.0 Hz
6.0 Hz
+0.1
0
-0.1
t