Function Applications
-479-
Table 4–28 V/f separation curve parameters
Para. No. Name
Default
Value Range Description
F3-13
Voltage source
for V/f
separation
0
0: Digital setting (F3-
14)
1: AI1
2: AI2
3: AI3
4: Reserved
5: Multi-reference
6: Simple PLC
7: PID
8: Communication
Note: 100.0%
corresponds to the
rated motor voltage.
This parameter sets the target voltage in V/f separation mode.
0: Digital setting (F3-14)
The V/f separation voltage is set by F3-14 (voltage digital setting of V/f
separation).
1: AI1
The V/f separation voltage is input with current or voltage signals through the
AI1 terminal. The frequency is calculated according to the preset AI curve.
2: AI2
The V/f separation voltage is input with current or voltage signals through the
AI2 terminal. The frequency is calculated according to the preset AI curve.
3: AI3
The V/f separation voltage is input with current or voltage signals through the
AI3 terminal. The frequency is calculated according to the preset AI curve. The
AC drive has two AI terminals by default, and the AI3 terminal needs to be
provided through the I/O extension card.
5: Multi-reference
In multi-reference mode, different combinations of DI terminal states
correspond to different reference values. The four multi-reference terminals can
provide 16 state combinations, corresponding to 16 reference values
(percentage x maximum frequency) of parameters in group FC.
6: Simple PLC
The V/f separation voltage is set by simple PLC. For details, see the function
description of simple PLC.
7: PID
The V/f separation voltage is set by PID. For details, see the PID function
description.
8: Communication
The main frequency is set through communication. The running frequency is
input through remote communication. The AC drive must be equipped with a
communication card to implement communication with the host controller.
This mode applies to remote control or centralized control systems of multiple
equipment.
F3-14
Voltage digital
setting for V/f
separation
0 V
0 V to rated motor
voltage (F1-02)
The reference value is between 0 V and the rated voltage. In V/f half separation
mode, the output voltage is twice the reference value.
F3-15
Voltage rise time
of V/f separation
0.0s
0.0s to 1000.0s
Note: This parameter
indicates the time
required for the
voltage to change
from 0 V to the rated
motor voltage.
This parameter indicates the time required for the output voltage to rise from 0
to the V/f separation voltage reference. In V/f half separation mode, this
parameter is invalid, and the voltage rise time is the same as that set by F0-17.
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