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5 Basic Settings
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
5-5 Frequency Reference Settings
5
5-5-1 Frequency Reference Selection
To use a positive/negative analog voltage input to set the frequency reference of inverter, set the
parameters as follows.
This enables inputs to the auxiliary frequency reference input (voltage reference) terminal only.
If a negative voltage is input to the auxiliary frequency reference input (voltage reference) terminal, the
motor will rotate in a reverse direction to the RUN command.
• Auxiliary frequency reference input (Voltage reference), between terminal FE and FC:
–9.8 to 9.8
VDC
Note By default, each analog input signal is set to reach the maximum frequency at 9.8 V or 19.8 mA.
*1 If C001 to C008 is not set to 16 (AT), FV input and FI input reference values will be added according to the 01
to 03 setting.
To use an analog voltage input and the volume adjuster on the Digital Operator (Model: 3G3AX-OP01)
to set the frequency reference, set the following parameters.
This enables switching between the frequency reference input (voltage reference) and the volume
adjuster on the 3G3AX-OP01.
To switch the reference input, use the terminal AT (Analog input switching) allocated to a multi-function
input terminal.
• Auxiliary frequency reference input (Voltage reference), between terminal FE and FC: –9.8 to 9.8
VDC
• Volume adjuster on Digital Operator (Model: 3G3AX-OP01)
Note By default, each analog input signal is set to reach the maximum frequency at 9.8 V or 19.8 mA.
*1 When the terminal AT is ON, the volume adjuster on the 3G3AX-OP01 is enabled.
Using a Positive/Negative Analog Voltage Input
Parameter No. Function name Data
Default data
Unit
A001
Frequency
Reference Selection
01: Control circuit terminal block
(Analog input)
02 –
A005
FV/FI Selection
*1
Ignores the set data in A005. 00 –
A006 FE Selection 00: FE only (Reversible) 03 –
C001 to C008
Multi-function Input
S1 to S8 Selection
Do not set C001 to C008 to 16
(Ter mi nal AT: Analog input switching).
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Using an Analog Voltage Input or Volume Adjuster by Switching
Parameter No. Function name Data
Default data
Unit
A001
Frequency
Reference Selection
01: Control circuit terminal block
(Analog input)
02 –
A005 FV/FI Selection
02: Switches between FV and volume
adjuster via terminal AT (Enabled
only when 3G3AX-OP01 is used)
00 –
A006 FE Selection 03: FE disabled 03 –
C001 to C008
Multi-function Input
S1 to S8 Selection
16: Terminal AT (Analog input
switching)
*1
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