RX Quick Start Guide
24 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.
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.
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 Description
A041 Torque boost selection 00: Manual torque boost
01: Automatic torque boost
A042 Manual torque boost voltage Can boost starting torque between 0 and 20% above normal
V/f curve
0.0 to 20.0%
A043 Manual torque boost frequency Sets the frequency of the V/f breakpoint for torque boost
0.0 to 50.0%
A044 V/f characteristics selection 00: VC (Constant torque characteristics)
01: VP (Special reduced torque characteristics)
02: Free V/F (characteristics)
A045 Output voltage gain Sets voltage gain of the inverter
20 to 100%
A046 Automatic torque boost voltage com-
pensation gain
Sets voltage compensation gain under automatic torque boost
0 to 255
A047 Automatic torque boost slip compen-
sation gain
Sets slip compensation gain under automatic torque boost
0 to 255
A005 [AT] Input Analog Input Configuration
00 ON [O]
OFF [OI]
01 ON [O]
OFF [O2]
02 ON [O]
OFF Integrated POT on external operator panel
03 ON [OI]
OFF Integrated POT on external operator panel
Parameter Parameter name Description
A011 O start frequency 0.00 to 400.00 Hz
A012 O end frequency 0.00 to 400.00 Hz
A013 O start ratio 0 to 100%
A014 O end ratio 0 to 100%
A015 O start selection 00: External start frequency (A011 set value)
01: 0 Hz
A101 OI start frequency 0.00 to 400.00 Hz
A102 OI end frequency 0.00 to 400.00 Hz
A103 OI start ratio 0% to OI end ratio
A104 OI end ratio OI start ratio to 100%
A105 OI start selection 00: Start FQ (Use OI start frequency [A101])
01: 0 Hz
AM H O O2
+V Ref.
Voltage input
Current input
A GND
AM H O O2
Freq.
setting
V/I input select
[AT]
4-20 mA
0-10 V
1 to 2kΩ, 2 W
L
Voltage input
OI
LOI
A005
Max frequency
A012
A102
A011
A101
A014
A104
100%
0V
10V
A013
A103
0%
A015=
A105=00
00
0
Input scale
%
A015=01
A105=01
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