1.2 Features and Advantages of Control Methods
SIEPCYEUOQ2V01A Q2V Technical Manual
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1.2
Features and Advantages of Control Methods
This drive has 5 available control methods from which you can select for different applications.
Table 1.5 Features and Advantages of V/f Control
Control Method Selection
Open Loop V/f Control
V/f Control)
Notes
Controlled Motor
Induction Motor
-
Parameter Settings
A1-02 = 0
(Default)
-
Basic Control
V/f
-
Main Applications
General-purpose variable speed control to connect more
than one motor to one drive.
-
Maximum Output Frequency
590 Hz
-
Speed Control Range
1:40
This is the range of variable control.
When you connect and operate motors in this mode, think about the
increase in motor temperature.
Starting Torque
150% / 3 Hz
This is the motor torque that the drive can supply at low speed during
start-up and the related output frequency (rotation speed).
You must think about drive capacity when a large quantity of torque is
necessary at low speed.
Auto-Tuning
Rotational and Line-to-Line Resistance (usually not
necessary)
Automatically tunes electrical motor parameters.
Torque Limits
No
Controls maximum motor torque to prevent damage to machines and
loads.
Speed Search
Yes
Immediately estimates (or detects) motor speed and direction when
coasting to a stop to quickly start-up the drive without stopping the motor.
Automatic Energy-saving Control
Yes
Automatically adjusts the voltage that the drive applies to the motor to
maximize motor efficiency for small and large loads.
High Slip Braking (HSB)
Yes
Increases motor loss to let the motor decelerate faster than usual without a
braking resistor. Motor characteristics have an effect on this function.
Feed Forward Control
No
Compensates effects of the system inertia to increase the speed precision
when the load changes.
KEB Ride-Thru Function
Yes
Quickly and safely stops the motor during power loss and automatically
starts operation at the previous speed when the drive applies power again
without coasting the motor.
Overexcitation Deceleration
Yes
Sets the V/f higher than the setting value during deceleration to increase
motor loss and decrease deceleration time.
Overvoltage Suppression Function
Yes
Adjusts speed during regeneration to prevent overvoltage.
*1
Note these points when you use this function:
•
When you can decouple the motor and machine for a test run, use Rotational Auto-Tuning. You must make adjustments to the
control in the range where there is no vibration in the machine after Rotational Auto-Tuning.
•
Motor loss increases during overexcitation braking and high-slip braking. Use a maximum braking frequency of 5% ED and a
maximum braking time of 90 seconds. After you start high-slip braking, you cannot restart the motor until it stops. Use
overexcitation braking to decelerate over a shorter time at a pre-determined speed.
*2
Do not use this function with hoist application.
Table 1.6 Features and Advantages of OLV Control
Control Method Selection
Open Loop Vector
(OLVector)
Notes
Controlled Motor
Induction Motor
-
Parameter Settings
A1-02 = 2
-
Basic Control
Open Loop Current Vector Control
-
Main Applications
•
General-purpose variable speed control
•
Applications in which high performance is necessary
without machine encoders
-
Maximum Output Frequency
590 Hz
-
Speed Control Range
1:100
This is the range of variable control.
When you connect and operate motors in this mode, think about the
increase in motor temperature.
Starting Torque
150% / 1 Hz
This is the motor torque that the drive can supply at low speed during
start-up and the related output frequency (rotation speed).
You must think about drive capacity when a large quantity of torque is
necessary at low speed.
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...