4-173
(2) AI1 signal filtering time (04-01)
(3) AI2 signal filtering time (04-06)
All analog inputs (AI1, AI2) have a 1
st
order programmable input filter that can be adjusted when noise is present
on each of the incoming analog signal to prevent erratic drive control.
The filter time constant (range: 0.00 to 2.00 seconds) is defined as the time that the input step signal reaches 63%
of its final value.
Note: Increasing the filter time causes the drive operation to become more stable but less responsive to change
to the analog input.
Figure 4.4.37 Filter time constant
(4) AI2 function setting (04-05)
AI2 is multi-function analog input terminal function selection. Refer to Table 4.4.11 for function overview.
Table 4.4.11 Multi-function analog input list (04-05 setting)
Setting
Function
Description
Control mode
Name Screen display V/F
/F
+
PG
SLV SV
PM
SV
PM
SLV
SLV2
0
Auxiliary
frequency
AUX.Freq Ref
Max Output Frequency (01-02, Fmax) =
100%
O O O O O
OO
1
Frequency
Reference Gain
(FGAIN)
Freq Ref Gain
Aggregated gain ＝
AI1 = 04-02 * FGAIN
O O O O O OO
2
Frequency
Reference bias
(FBIAS)
Freq Ref Bias
Aggregated bias ＝
AI1 = 04-03 * FBIAS
O O O O O
OO
3
Output Voltage
Bias (VBIAS)
Output Volt Bias
Aggregate output voltage =V/F curve
voltage + VBIAS
O O X X O OO
4
Coefficient of
acceleration and
deceleration
reduction (K)
Tacc/Tdec Scaling
Actual acceleration and deceleration time
= acceleration and deceleration time
O O O O O OO
5
DC braking
current
DC Inj Current
Adjust the DC braking current (0 ~ 100%)
based on analog input. When the inverter
rated current = 100%, DC braking current
07-07 is disabled.
OO O X O
XO
6
Over-torque
detection level
Over Tq Level
Change over-torque detection level
based on over-torque detection level, at
this time, 08-15 is disabled.
O O O O O OO
7
Stall prevention
Level During
Running
Run Stall Level
Adjust the action level (30% ~ 200%) of
stall prevention in operation based on
analog input. The inverter rated current
=100%.
O O X X O XO
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