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7 Detailed Functions
High-function General-purpose Inverter 3G3RX-V1 User’s Manual (I578-E1)
7-5 Multi-function Terminal Functions (Group C)
7
• This function is enabled when the 1st/2nd Control Method (A044/A244) is set to 03 (Sensorless
vector control), 04 (0-Hz sensorless vector control), or 05 (Sensor vector control). It allows the control
method in the speed control system to be switched between the proportional integral control and the
proportional control.
• For the P/PI switching function, refer to 6-4-2 P/PI Switching Function on page 6-28.
• Use this function when the control circuit terminal block is not selected as the frequency
reference/RUN command source to force enable operation via the terminal block by turning ON/OFF
the multi-function input terminal to which the function is allocated.
• To allocate this function, set the Multi-function Input S1 to S8 Selection (C001 to C008) to 51 (F-TM).
• When the forced terminal block function is allocated to a multi-function input terminal, the inverter
accepts the frequency reference source and RUN command via the sources selected in A001 and
A002 if the signal is OFF and via the control circuit terminal block if the signal is ON.
• The forced operator function (C001 to C008 = 31: OPE) has priority to this function if both signals
turn ON simultaneously.
P/PI Switching Function (PPI)
Parameter No. Function name Data Default data Unit
A044 1st Control Method 03: Sensorless vector control (Only in
the heavy load mode)
04: 0-Hz sensorless vector control
05: Sensor vector control (V2)
00 –
A244 2nd Control Method
C001 to C008
Multi-function Input S1
to S8 Selection
43: PPI (P/PI switching) – –
H005 1st Speed Response
0.001 to 9.999/10.00 to 80.00
(10.000 to 80.000)
1.590 –
H205 2nd Speed Response
H050 1st PI Proportional Gain
0.0 to 999.9
1000.
100.0
%
H250
2nd PI Proportional
Gain
H051 1st PI Integral Gain
0.0 to 999.9
1000.
100.0
H251 2nd PI Integral Gain
H052 1st P Proportional Gain
0.01 to 10.00 1.00 –
H252 2nd P Proportional Gain
Forced Terminal Block Function (F-TM)
Parameter No. Function name Data Default data Unit
C001 to C008 Multi-function Input S1 to
S8 Selection
51: F-TM (Forced terminal block) – –
Data Symbol Function name Description
51 F-TM Multi-function Input
Selection
Forced terminal block
Related parameters A001, A002