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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 switch between two analog voltage inputs to set the frequency reference, set the parameters as
follows.
This enables switching between the frequency reference input (voltage reference) terminal and auxiliary
frequency reference input (voltag reference) terminal.
To switch between these analog input signals, use the terminal AT (Analog input switching) allocated to
a multi-function input terminal.
• Frequency reference input (Voltage reference), between terminal FV and FC: 0 to 9.8 VDC
• 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 When the terminal AT is ON, the auxiliary frequency reference input (voltage reference) terminal is enabled.
Using Two Analog Voltage Inputs 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
*1
01: Switching between FV and FE via
terminal AT
00 –
A006 FE Selection
Select one of the following settings.
00: FE only
03: FE disabled
03 –
C001 to C008
Multi-function Input
S1 to S8 Selection
16: Terminal AT (Analog input
switching)
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