Omron MX2 User Manual page 95

"A" Group: Standard Functions
Func.
Code
A015
A016
*1
Up to 1000Hz for High frequency mode (d060 set to "2")
*2
Up to 1000Hz for High frequency mode (d060 set to "2")
"A" Function
Name
[O] input start frequency enable
Analog input filter
The [AT] terminal selects whether the inverter uses the voltage [O] or current
[OI] input terminals for external frequency control. When intelligent input [AT]
is ON, you can set the output frequency by applying a current input signal at
[OI]-[L]. When the [AT] input is OFF, you can apply a voltage input signal at
[O]-[L] to set the output frequency. Note that you must also set parameter
= 01 to enable the analog terminal set for controlling the inverter frequency.
Option Terminal
Code Symbol
16
AT
Valid for inputs:
Required settings:
Notes:
Combination of A005 setting and [AT] input for
analog input activation.
A005
[AT]
Input
00
ON
OFF
02
ON
OFF
03
ON
OFF
• Be sure to set the frequency source setting
A001=01 to select the analog input terminals.
If [AT] is not assigned to any of the intelligent input terminal, inverter recog-
nizes the input [O]+[OI].
A016
: External Frequency Filter Time Constant - This filter smoothes the
analog input signal for the inverter's output frequency reference.
A016
• sets the filter range from n=1 to 30. This is a simple moving average
calculation, where n (number of samples) is variable.
A016 31
• = is a special value. It configures the inverter to use a movable
deadband feature. Initially the inverter uses the 500 ms of filter time con-
stant. Then, the deadband is employed for each subsequent average of
16 samples. The deadband works by ignoring small fluctuations in each
new average: less than ±0.1 Hz change. When a 30-sample average
exceeds this deadband, then the inverter applies that average to the out-
put frequency reference, and it also becomes the new deadband compar-
ison point for subsequent sample averages.
Description
Two options; select codes:
00... Use offset (A011 value)
01... Use 0Hz
Range n = 1 to 31,
1 to 30 : ×2ms filter
31: 500ms fixed filter with
±0.1kHz hys.
Function State
Name
Analog ON See the table down below
Input
Voltage/
OFF
Current
Select
C001~C007
Example :
A001 = 01
Analog Input
Configuration
[O]
[OI]
Keypad Pot
[O] See I/O specs on page 169.
Keypad Pot
[OI]
Section 3-5
Run Defaults
Mode
EU
Edit
01
8.
Description
AT
7 6 5 4 3 2 1 L
AM H O OI L
4-20 mA
+ -
0-10 V
Units
–
Spl.
A001
PLC PCS P24
73