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Appendix B How to Select AC Motor Drive |DD Series
B-1
Appendix B
How to Select AC Motor Drive
The choice of the right AC motor drive for the application is very important and has great influence on its
lifetime. If the capacity of AC motor drive is too large, it cannot offer complete protection to the motor
and motor maybe damaged. If the capacity of AC motor drive is too small, it cannot offer the required
performance and the AC motor drive maybe damaged due to overloading.
But by simply selecting the AC motor drive of the same capacity as the motor, user application
requirements cannot be met completely. Therefore, a designer should consider all the conditions,
including load type, load speed, load characteristic, operation method, rated output, rated speed, power
and the change of load capacity. The following table lists the factors you need to consider, depending
on your requirements.
Related Specification
Item
Speed and
torque
characteristics
Time
ratings
Overload
capacity
Starting
torque
Load type
Friction load and weight load
Liquid (viscous) load
Inertia load
Load with power transmission
●
●
Load speed
and torque
characteristics
Constant torque
Constant output
Decreasing torque
Decreasing output
● ●
Load
characteristics
Constant load
Shock load
Repetitive load
High starting torque
Low starting torque
● ● ● ●
Operation
Method
Continuous operation,
Short-time operation
Long-time operation at medium/low
speeds
● ●
Rated Output
Maximum output current
(instantaneous)
Constant output current
(continuous)
●
●
Rated Speed
Maximum frequency,
Base frequency
●
Input Power
Power supply transformer capacity
Percentage impedance
Voltage fluctuations and unbalance
Number of phases, single phase
protection
Frequency
● ●
Mechanical friction, losses in wiring
● ●
Load Capacity
Changes
Duty cycle modification
●
- ''( 1
- 1
- Preface 2
- Table of Content 5
- Chapter 1 Introduction 7
- 1-1 Receiving and Inspection 8
- T02DD21A0 9
- Minimum Mounting Clearances 10
- CAUTION! 11
- Dimensions for Motor 12
- ECMD-B9160GMS 13
- Chapter 2 Wiring 14
- 2-1 Wiring Diagram 15
- Used with external power 16
- Not allowed 17
- 2-2 Main Circuit Terminal 18
- Chapter 2 Wiring 19
- 2-3 Control Circuit Terminal 20
- 3-1 Operation Method 23
- 3-2 Keypad Descriptions 24
- Chapter 4 Parameter Settings 25
- Settings 28
- Parameter Reset 48
- Start-up Display Selection 48
- Software version 49
- Password Input 49
- Password Set 49
- Control Method 50
- Door Control Mode 51
- Output Direction 52
- Demo Mode 53
- Frequency Testing Command 53
- Motor Auto Tuning (PM) 55
- Motor Auto Tuning (IM) 57
- Output Voltage 3 61
- Output Frequency 4 61
- Output Voltage 4 61
- OD:("OPEN":STOP) 62
- CD:(" OPEN": STOP) 62
- Multi-function Output (MO3) 65
- Digital Output Direction 66
- Position Detection Signal 1 66
- Encoder (PG) Signal Type 68
- Encoder pulse 68
- Encoder Input Type Setting 68
- Door Width Pulses (Unit:1) 70
- 04.19=S1 73
- 04.20=S2 73
- Freqeunc 73
- VFPG SVC FOCPG 74
- 05.19=S1 77
- 05.20=S2 77
- Door Re-open Detection Time 79
- Quadrant I 80
- Quadrant II 80
- Quadrant III 80
- Quadrant IV 80
- Low Voltage Level 81
- Position Control Mode 82
- VFPG SVC FOCPG FOCPM 84
- Auto Restart After Fault 85
- Gain for Speed Feed Forward 88
- VFPG SVC FOCPG FOCPM 89
- Communication Address 90
- Transmission Speed 90
- Transmission Fault Treatment 90
- Time-out Detection 90
- Communication Protocol 90
- Code Description: 91
- Status monitor 97
- Read only 97
- Example: 98
- Response Delay Time 99
- Multi-function Output RY1 103
- Multi-function Output RY2 103
- View User-defined Parameters 103
- 2 1 1B 104
- 111x16 + x16 =16+11 = 104
- Enter 2127 104
- Chapter 5 Troubleshooting 106
- 5-1 Over Current (oc) 107
- 5-2 Ground Fault (GFF) 108
- 5-3 Over Voltage (ov) 109
- 5-4 Low Voltage (Lv) 110
- 5-5 Over Heat (oH1) 111
- 5-6 Overload (oL) 112
- 5-8 Phase Loss (PHL) 114
- 5-9 Motor is not Running 115
- 5-12 Motor Run Error 118
- 5.14 Environmental Condition 120
- High Harmonic at Power Side 121
- Motor Temperature Rises 121
- 6.1.1 Reset 127
- Voltage 128
- Keypad 128
- Mechanical parts 128
- Main circuit 129
- Resistor of main circuit 130
- Control Characteristics 132
- Motor Model 134
- Appendix B 135
- B-1 Capacity Formulas 136
- Symbol explanation 137
- B-2 General Precautions 138
- Drives Selection 138
- Parameter Settings 138
- Standard motor 139
- Special motors: 140
- Power Transmission Mechanism 140
- Motor torque 141
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