SIEPCYEUOQ2V01A Q2V Technical Manual
655
Table 12.51 Stall Prevention Level during Deceleration
Drive Input Voltage
Stall Prevention Level during Deceleration
400 V class
754 V
shows the Stall Prevention during deceleration function.
Figure 12.121 Stall Prevention Operation during Deceleration
1 : Automatic Decel Reduction
The drive adjusts the deceleration rate to keep the DC bus voltage at the
L3-17 [DCBus Regul.Level]
level. This
makes the shortest possible deceleration time and will not let the motor stall. The drive ignores the selected
deceleration time and the possible deceleration time cannot be less than 1/10 of the set deceleration time.
This function uses these parameters to adjust the deceleration rate:
•
L3-20 [DCBus VoltAdj Gain]
•
L3-21 [OVSup Acc/Dec Gain]
•
L3-24 [Acc@Rated Torque]
•
L3-25 [Load Inertia Ratio]
Note:
The deceleration time is not constant. For applications where the precision of the stop position is very important, use a dynamic braking
option and set
L3-04 = 0
. If an
ov
occurs, set
L3-04 = 3
.
2 : Gen Purpose w/ DB Resistor
A braking resistor is necessary for this setting. The braking resistor and the drive work together for the Stall
Prevention during deceleration function.
3 : HiFlux Overexcitation
Enables Overexcitation/High Flux and enables a shorter deceleration time than when
L3-04 = 0
.
Note:
•
If the overexcitation time is long and you decelerate frequently, the drive can detect
oL1 [Motor Overload]
faults. If the drive detects
oL1
, decrease the deceleration time or install a braking resistor to the drive.
•
The deceleration time during Overexcitation Deceleration changes when the motor characteristics and machine inertia change. Adjust
the
n3-13 [OverExcBr Gain]
and
n3-23 [OverExcBr Operation]
levels. Refer to
“
n3: HIGHSLIP/OVEREXCITATION BRAKE
”
for
more information.
4 : HiFlux2 Overexcitation
Enables Overexcitation/High Flux 2. This function decreases the possible deceleration time more than
Overexcitation/High Flux.
The drive decreases motor speed and tries to keep the DC bus voltage at the
L3-17
level.
If the drive detects
oL1
, decrease the values set in
n3-13
and
n3-21
. If the drive detects
ov
, increase the values set
in
C1-02, C1-04, C1-06, and C1-08 [Decel Time 4]
.
Note:
•
During Overexcitation/High Flux 2, the drive disables Hunting Prevention in V/f Control and also disables Speed Control that uses
torque limit in OLV Control.
•
Refer to
“
n3: HIGHSLIP/OVEREXCITATION BRAKE
”
for more information.
■
L3-51 StallP@RUNDecTime
No.
(Hex.)
Name
Description
Default
(Range)
L3-51
(0459)
StallP@RUNDecTime
Sets the function to enable and disable Stall Prevention During Run.
0
(Determined by A1-02)
0 : Dec Time 1 (C1-02)
V/f
OLV
OLV/PM
OLV/PM AOLV/PM
EZOLV
Summary of Contents for Q2V Series
Page 2: ...This Page Intentionally Blank 2 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 12: ...12 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 18: ...i 2 Legal Information 18 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 26: ...1 2 Features and Advantages of Control Methods 26 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 38: ...2 8 Installation Methods 38 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 70: ...3 3 Main Circuit Wiring 70 SIEPCYEUOQ2V01A Q2V Technical Manual Models B006 B012...
Page 102: ...3 17 Motor Application Precautions 102 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 138: ...4 12 Test Run Checklist 138 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 144: ...5 2 European Standards 144 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 145: ...Standards Compliance 5 5 2 European Standards SIEPCYEUOQ2V01A Q2V Technical Manual 145...
Page 146: ...5 2 European Standards 146 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 266: ...7 10 Troubleshooting Without Fault Display 266 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 284: ...8 6 Storage Guidelines 284 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 312: ...10 10 Peripheral Devices and Options 312 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 430: ...11 21 Parameters Changed by PM Motor Code Selection 430 SIEPCYEUOQ2V01A Q2V Technical Manual...
Page 731: ...SIEPCYEUOQ2V01A Q2V Technical Manual 731 Z Z pulse Auto Tuning 125...