YASKAWA V1000 Series Technical Manual page 312

B.2 Parameter Table
No. Name
Stall Prevention Selection during
L3-04
Deceleration
L3-05 Stall Prevention Selection during Run
L3-06 Stall Prevention Level during Run
L3-11 OV Suppression Function Selection
L3-17 Overvoltage Suppression and Stall
<24>
Prevention Desired DC Bus Voltage
Main Power Circuit Voltage
L3-20
Adjustment Gain
L3-21 Accel/Decel Rate Calculation Gain
Deceleration Time at Stall Prevention
L3-22
during Acceleration
Automatic Reduction Selection for
L3-23
Stall Prevention during Run
Motor Acceleration Time for Inertia
L3-24
Calculations
L3-25 Load Inertia Ratio
L4-01 Speed Agreement Detection Level
L4-02 Speed Agreement Detection Width
Speed Agreement Detection Level
L4-03
(+/-)
Speed Agreement Detection Width
L4-04
(+/-)
Frequency Reference Loss Detection
L4-05
Selection
Frequency Reference at Reference
L4-06
Loss
L4-07 Frequency Detection Conditions
L5-01 Number of Auto Restart Attempts
L5-02 Auto Restart Operation Selection
312
Description
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 (380/760 VDC),
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).
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.
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.
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.
Sets the desired value for the DC bus voltage during overvoltage suppression and
stall prevention during deceleration. Enabled only when L3-04 = 2.
Sets the proportional gain used by KEB, Stall prevention and overvoltage
suppression.
If OV or UV1 occurs at the beginning of KEB deceleration, slowly increase this
setting by 0.1.
Sets the proportional gain used to calculate the deceleration rate during KEB, OV
suppression function and stall prevention during deceleration (L3-04 = 2).
This parameter does not typically require adjustment. Increase the value in steps
of 1.0 if overcurrent and overvoltage occur.
Sets the deceleration time used for stall prevention during acceleration in Open
Loop Vector control for PM motors.
When set to 0, the drive decelerates at the normal deceleration time.
0: Sets the stall prevention level throughout the entire frequency range to the
value in parameter L3-06.
1: Automatically lowers the stall prevention level in the constant output range.
The lower limit value is 40% of L3-06.
Sets the time needed to accelerate the uncoupled motor at rated torque from stop
to the maximum frequency.
Setting the drive capacity to parameter o2-04 or changing E2-11 will
automatically set this parameter for a 4-pole motor.
Sets the ratio between the motor and machine inertia.
L4: Frequency Detection
Use L4 parameters to configure frequency detection operation.
These parameters configure the multi-function output (H2-oo = 2, 3, 4, 5)
settings "Fref/Fout Agree 1", "Fref/Set Agree 1", "Frequency Detection 1," and
"Frequency detection 2".
Parameter L4-01 sets the level while parameter L4-02 sets the hysteresis for the
Speed Detection Output Function.
These parameters configure the Multi-Function Output (H2-oo = 13, 14, 15,
16) settings "Fref/Fout Agree 2", "Fref/Set Agree 2", "Frequency Detection 3,"
or "Frequency Detection 4".
Parameter L4-03 sets the level while parameter L4-04 sets the hysteresis for the
Speed Detection Output Function.
Sets operation when the frequency reference is lost (reference drops 90% or more
of within 400 ms).
0: Stop - Drive will stop.
1: Run at L4-06 PrevRef - Drive will run at the percentage set in L4-06 of the
frequency reference before loss.
Sets the frequency reference when a reference loss was detected and L4-05 = 1.
Reference will be: Fref = Fref at time of loss L4-06.
0: No detection during baseblock.
1: Detection always enabled.
L5: Fault Reset
Use L5 parameters to configure Automatic Restart after fault.
Sets the counter for the number of times the drive attempts to restart when the
following faults occur: GF, LF, OC, OV, PF, PUF, RH, RR, OL1, OL2, OL3,
OL4, UV1.
If the drive faults after an auto restart attempt, the counter is incremented.
When the drive operates without fault for 10 minutes, the counter will be reset.
Sets fault contact activation during automatic restart attempts.
0: Fault output (H2-oo = E) not active.
1: Fault output (H2-oo = E) active during restart attempt.
Range
0 to 4
0 to 2
30 to 200
150 to 400 V
0.00 to 5.00
0.00 to 200.00
0.0 to 6000.0
0.001 to
10.000
0.0 to 1000.0
0.0 to 400.0
0.0 to 20.0
-400.0 to
+400.0
0.0 to 20.0
0.0 to 100.0
0 to 1
0 to 10
YASKAWA ELECTRIC SIEP C710606 18A YASKAWA AC Drive – V1000 Technical Manual (Preliminary)
Control
Mode
Addr.
Def.
Hex
V/f OL V PM
1 S S S
<50>
1 A − A
A − A
<7>
0, 1 0 A A - 4C7
370 V
A A A
<9>
1.00 A A A
1.00 A A A
0.0 s − − A
0, 1 0 A A Α 4FD
A A A
<57>
1.0 A A A
0.0 Hz A A A
2.0 Hz A A A 49A
0.0 Hz A A A 49B
2.0 Hz A A A 49C
0, 1 0 A A A 49D
80.0% A A A 4C2
0 A A A 470H
0 A A A
0, 1 0 A A A
Pg.
492 —
493 —
494 —
—
462 —
465 —
466 —
4F9 —
—
46E —
46F —
499 —
—
—
—
—
—
—
49E —
49F —