No. Name Description Range Def.
Control
Mode
Addr.
Hex
Pg.
V/
f
O
L
V
P
M
L3-01
Stall Prevention Selection
during Acceleration
Selects the Stall Prevention method used to prevent
excessive current during acceleration.
0: Disabled - Motor accelerates at active acceleration rate.
The
motor may stall if load is too heavy or accel time is too
short.
1: General Purpose - When output current exceeds L3-02
level, acceleration stops. Acceleration will continue when
the output current level falls below the L3-02 level.
2: Intelligent - The active acceleration rate is ignored.
Acceleration is completed in the shortest amount of time
without exceeding the current value set in L3-02.
0 to 2
<7>
1 A A A 48F 211
L3-02 Stall Prevention Level
during Acceleration
Used when L3-01 = 1 or 2.
100% is equal to the drive rated current.
Decrease
the set value if stalling or excessive current occurs
with default setting.
0 to 150
<18>
<8>
<18>
A A A 490 212
L3-03
Stall Prevention Limit
during Acceleration
Sets Stall Prevention lower limit during acceleration when
operating in the constant power range. Set as a percentage
of the drive's rated current.
0 to 100 50% A A A 491 212
L3-04
Stall Prevention Selection
during Deceleration
When using a braking resistor, use setting "0". Setting "3" is
used in specific applications.
0:
Disabled - The drive decelerates at the active deceleration
rate. If the load is too large or the deceleration time is too
short, an ov fault may occur.
1: General Purpose - The drive decelerates at the active
deceleration rate, but if the main circuit DC bus voltage
reaches the Stall Prevention level, deceleration will stop.
Deceleration will continue once the DC bus level drops
below the Stall Prevention level.
2: Intelligent - The active deceleration rate is ignored and the
drive decelerates as fast as possible without hitting ov fault
level. Range: C1-02 / 10.
3: Stall Prevention with Braking Resistor - Stall Prevention
during deceleration is enabled in coordination with dynamic
braking.
4: Overexcitation Deceleration - Decelerates with the flux
level determined by n3-13 (Overexcitation Gain).
7: Overexcitation Deceleration 3 - Applies more braking
power than normal overexcitation deceleration. Yaskawa
recommends extra caution due to the heavy load on the
motor.
0 to 4; 7
<9>
1 S S S 492 213
L3-05
Stall Prevention Selection
during Run
Selects the Stall Prevention method to use to prevent drive
faults during run.
0:
Disabled - Drive runs a set frequency. A heavy load may
cause the drive to trip on an oC or oL fault.
1: Decel Time 1 - The drive will decelerate at Decel Time 1
(C1-02) if the output current exceeds the level set by L3-06.
Once the current level drops below the L3-06 level, the drive
will accelerate back to its frequency reference at the active
acceleration rate.
2: Decel Time 2 - Same as setting 1 except the drive
decelerates at Decel Time 2 (C1-04).
When output frequency is 6 Hz or less, Stall Prevention
during run is disabled regardless of the setting in L3-05.
0 to 2 1 A − A 493 214
L3-06
Stall Prevention Level
during Run
Enabled when L3-05 is set to "1" or "2". 100% is equal to
the drive rated current.
Decrease the set value if stalling or excessive current occurs
with the default settings.
30 to 150
<18>
<8>
<18>
A − A 494 214
L3-11
ov Suppression Function
Selection
Enables or disables ov suppression function, which allows
the
drive to change the output frequency as the load changes,
thus preventing an ov fault.
0: Disabled
1: Enabled
Note: The frequency reference and motor speed diverge as
the regenerative energy begins to flow back into the DC bus
and triggers the ov suppression function. Disable this
function when using a braking resistor.
0, 1 0 A A A 4C7 215
L3-17
<5>
Overvoltage Suppression
and
Stall Prevention Desired
DC Bus Voltage
Sets the desired value for the DC bus voltage during
overvoltage suppression and Stall Prevention during
deceleration. Enabled only when L3-04 = 2 or L3-11 = 1.
150 to
400 V
370 V
<6>
A A A 462 215
B.2 Parameter Table
YASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual
359
B
Parameter List
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