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7 Detailed Functions
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
7-3 Basic Functions (Group A)
7
The inverter has the following three types of external analog input terminals.
By default, these analog input terminals are set to reach the maximum frequency at 9.8 V or 19.8 mA.
• FV-FC terminal: 0 to 10 V (Voltage input)
• FI-FC terminal: 4 to 20 mA (Current input)
• FE-FC terminal: –10 to 10 V (Voltage input)
• Note the following when setting these parameters. The judgment on the frequency reference and
reversibility will be made based on conditions that 16 (AT: analog input switching) is allocated to any
of the multi-function input terminals and the combination of the values set in A005 and A006.
• When reversibility is enabled, the motor will rotate in the reverse direction if the sum of the main
frequency reference and the auxiliary frequency reference is less than 0 (that is, analog input is
negative) even when the FW (Forward) terminal is ON.
Also, even when the FE terminal is not connected, the motor may also rotate in the reverse direction
if the voltage is unstable at around 0 V, which may result in a prolonged acceleration time or other
phenomenon.
Analog Input (FV, FE, FI)
Parameter No. Function name Data Default data Unit
A005 FV/FI Selection
00: Switching between FV (Voltage) and
FI (Current) via terminal AT
01: Switching between FV and FE via
terminal AT
02: Switching between FV and volume
adjuster via terminal AT
*1
03: Switching between FI and volume
adjuster via terminal AT
*1
04: Switching between FE and volume
adjuster via terminal AT
*1
*1. The volume adjuster is enabled only when the 3G3AX-OP01 is connected.
00 –
A006 FE Selection
00: FE only
01: FV/FI auxiliary frequency reference
(Not reversible)
02: FV/FI auxiliary frequency reference
(Reversible)
03: FE disabled
03 –
Related functions A005, A006, C001 to C008, C081, C082
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