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SIEPCYEUOQ2V01A Q2V Technical Manual
Note:
Once power is restored, the drive will not execute Speed Search until the time set in
b3-05 [SpSrch Delay Time]
has passed. Thus, the
drive will not always start Speed Search although the time set in
L2-03 [Min Baseblck Time]
is expired.
If you enter the Run command at the same time as Speed Search, the drive will not do Speed Search until the time
set in
L2-03
is expired. When the value set in
L2-03
<
b3-05
, the drive will use the wait time set in
b3-05
.
Figure 12.23 Speed Search Selection at Start (Current Detection Type)
WARNING!
Sudden Movement Hazard. Do not do Current Detection Speed Search with light loads or a stopped motor. If you
do Auto-Tuning in these conditions, the motor can suddenly accelerate and cause serious injury or death.
Note:
•
You cannot use Current Detection Speed Search with PM motors.
•
If the motor is rotating in reverse, you cannot do Speed Search.
•
If the drive detects
oL1 [Motor Overload]
during Current Detection Speed Search, decrease the value set in
b3-03
.
•
If the drive detects
oC [Overcurrent]
or
ov [Overvoltage]
during Current Detection Speed Search after the drive recovers from a
momentary power loss, increase the value set in
L2-03
.
■
Speed Estimation
Use this Speed Search function with induction motors. Set
b3-24 = 1 [SpSrch Method Selection = Speed
Estimation]
. This function uses less current and has a shorter search time than other functions. This function lets
you do Speed Search when the motor is rotating in reverse. When you return power after a power loss, the motor
will not suddenly accelerate.
Note:
You cannot do Speed Estimation Speed Search in these conditions:
•
When You Operate More than One Motor with One Drive
•
When you use a high-speed motor (120 Hz or higher)
•
When you use a 1.5 kW or smaller motor.
•
When the motor output is more than 1 frame size smaller than the drive capacity
•
When there is a long wiring distance between the drive and motor
For these conditions, use Current Detection Speed Search.
Speed Estimation Speed Search uses these two steps to estimate the motor speed:
1.
Residual Voltage Search
When there is a short baseblock time, the drive searches for residual voltage. The drive uses the residual
voltage in the motor to estimate the motor speed and direction of rotation. The drive outputs the estimated
motor speed as frequency, then uses the deceleration rate set in
L2-04
to increase the voltage. When the output
voltage aligns with the V/f pattern, the drive accelerates or decelerates the motor to the frequency reference. If
the drive cannot estimate the motor speed because of low residual voltage, it will automatically do Current
Injection.
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...