Analog Inputs - Omron 3G3RX Quick Start Manual

RX Quick Start Guide
Automatic torque boost- Use the voltage compensation (A046) and slip compensation (A047) to obtain a better performance
under automatic torque boost mode (A041=01) adjusting the output frequency and output voltage automatically depending on
the load. The output voltage due automatic boost is added to the manual torque boost voltage so both should be adjusted.
Parameter
A041
A042
A043
A044
A045
A046
A047

3.12 Analog inputs

RX provides three analog inputs, the input terminal group includes the [L], [OI],
[O],[O2] and [H] terminals on the control connector, which provide Voltage [O]
(0 to 10V),[O2] (-10 to 10V) or Current [OI](4-20mA) input. All analog input
signals must use the analog ground [L].
If you use either the voltage or current analog inputs, you must select one of them
using the logic input terminal function [AT] analog type. Refer to next table for
details about the combinations between A005 and [AT] terminal. Remember that
you must also set A001=01 to select analog input as the frequency source.
If [AT] function is not assigned to any digital input the inverter recognizes the
[AT] as OFF and the used value depends on A005 parameter setting. Default set-
ting use [O]+[OI] as analog input. In case either (O) or (OI) is to be referred,
please ground the other.
A005 [AT] Input
00 ON
OFF
01 ON
OFF
02 ON
OFF
03 ON
OFF
For [O] input and using parameters A013 and A014 you could select the portion of
the voltage input range. Parameters A011 and A012 select the start and end fre-
quency of the converted output frequency range, respectively. When the line does
not begin at the origin (A011 and A013 > 0), then A015 defines whether the
inverter outputs 0 Hz or the A011 specified frequency for analog input below A013.
Parameter Parameter name
A011 O start frequency
A012 O end frequency
A013 O start ratio
A014 O end ratio
A015 O start selection
A101 OI start frequency
A102 OI end frequency
A103 OI start ratio
A104 OI end ratio
A105 OI start selection
24
Parameter Name
Torque boost selection
Manual torque boost voltage
Manual torque boost frequency
V/f characteristics selection
Output voltage gain
Automatic torque boost voltage com-
pensation gain
Automatic torque boost slip compen-
sation gain
Analog Input Configuration
[O]
[OI]
[O]
[O2]
[O]
Integrated POT on external operator panel
[OI]
Integrated POT on external operator panel
Description
0.00 to 400.00 Hz
0.00 to 400.00 Hz
0 to 100%
0 to 100%
00: External start frequency (A011 set value)
01: 0 Hz
0.00 to 400.00 Hz
0.00 to 400.00 Hz
0% to OI end ratio
OI start ratio to 100%
00: Start FQ (Use OI start frequency [A101])
01: 0 Hz
Description
00: Manual torque boost
01: Automatic torque boost
Can boost starting torque between 0 and 20% above normal
V/f curve
0.0 to 20.0%
Sets the frequency of the V/f breakpoint for torque boost
0.0 to 50.0%
00: VC (Constant torque characteristics)
01: VP (Special reduced torque characteristics)
02: Free V/F (characteristics)
Sets voltage gain of the inverter
20 to 100%
Sets voltage compensation gain under automatic torque boost
0 to 255
Sets slip compensation gain under automatic torque boost
0 to 255
+V Ref.
Voltage input
Voltage input
Current input
A GND
[AT]
AM H
1 to 2kΩ, 2 W
A012
A102
A011
A101
0
AM H O O2
OI L
V/I input select
Freq.
setting
A005
O O2 OI L
4-20 mA
0-10 V
Max frequency
A015= 00
A105=00
A015=01
A105=01
A013 A014
0% 100%
A103 A104
0V 10V
Input scale
RX Quick Start Guide
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