Yaskawa Matrix Converter - Manual (Page 209)

6
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‹ Changing Stall Prevention Level during Run Using an Analog Input
If H3-09 (Terminal A2 Function Selection) or H3-05 (Terminal A3 Function Selection) is set to 8 (stall pre-
vention level during run), the stall level during run by setting H3-10 (Terminal A2 Gain Setting) and H3-11
(Terminal A2 Bias Setting) or H3-06 (Terminal A3 Gain Setting) and H3-07 (Terminal A3 Bias Setting) can
be changed.
The stall prevention level enabled while the motor is running is either the multi-function analog input terminal
A2 or A3 input level, or the value set to parameter L3-06, whichever is smaller.
Fig 6.37 Stall Prevention Level during Run Using an Analog Input
‹ Using Frequency Detection: L4-01 to L4-05
Set these parameters when outputting one of the frequency agree or frequency detection signals from a multi-
function output. When using Flux Vector Control, the motor speed is detected.
INFO
If the motor capacity is smaller than the MxC capacity or the motor stalls when operating at the defaults, lower
the stall prevention level during run.
Parameter
Number
Name
Description
Setting
Range
Default
Change
during
Run
Control Methods
Display V/f
Open
Loop
Vector
Flux
Vector
L4-01
Speed Agreement
Detection Level Effective when “Desired frequency (speed)
agree 1,” “Frequency (FOUT) detection 1,” or
“Frequency (FOUT) detection 2” is set for a
multi-function output.
Frequencies to be detected are set in Hz units.
0.0 to
120.0
0.0 Hz No A A A
Spd Agree Level
L4-02
Speed Agreement
Detection Width Effective when “Frequency (speed) agree 1,”
“Frequency (FOUT) agree 1,” or “Frequency
(FOUT) detection 2” is set for a multi-func-
tion output.
Sets the frequency detection width in Hz
units.
0.0 to
20.0
2.0 Hz No A A A
Spd Agree Width
L4-03
Speed Agreement
Detection Level
(+/-) Effective when “Desired frequency (speed)
agree 2,” “Frequency (FOUT) detection 3,” or
“Frequency (FOUT) detection 4” is set for a
multi-function output.
Frequency that should be detected is set in Hz
units.
-120.0
to
+120.0
0.0 Hz No A A A
Spd Agree Lvl +-
Stall prevention level during operation
Multi-function analog input
terminal A2, A3 input level
(4 mA) (8.8 mA) (20 mA)
100%
30%
0 3 V 10 V