Related Specification | Delta Electronics VFD-M instruction

Appendix C How to Select the Right 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		Time	Overload	Starting
		Item	torque		Time	Overload	Starting
			torque		ratings	capacity	torque
			characteristics		ratings	capacity	torque
			characteristics
		Friction load and weight
		load
	Load type	Liquid (viscous) load	●				●
	Load type	Inertia load	●				●
		Inertia load
		Load with power
		transmission
	Load speed and	Constant torque
	Load speed and	Constant output
	torque	Constant output	●		●
	torque	Decreasing torque	●		●
	characteristics	Decreasing torque
	characteristics	Decreasing output
		Decreasing output
		Constant load
	Load	Shock load
	Load	Repetitive load	●		●	●	●
	characteristics	Repetitive load	●		●	●	●
	characteristics	High starting torque
		High starting torque
		Low starting torque
	Continuous operation, Short-time operation				●	●
	Long-time operation at medium/low speeds				●	●
	Long-time operation at medium/low speeds
	Maximum output current (instantaneous)		●			●
	Constant output current (continuous)		●			●
	Constant output current (continuous)
	Maximum frequency, Base frequency		●
	Power supply transformer capacity or
	percentage impedance
	Voltage fluctuations and unbalance					●	●
	Number of phases, single phase protection
	Frequency
	Mechanical friction, losses in wiring					●	●
	Duty cycle modification				●

Revision May 2008, ME14, SW V3.04							C-1

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Delta Electronics VFD-M manual Appendix C How to Select the Right AC Motor Drive, Related Specification

Contents

Page Page Page Preface Page Table of Contents Keypad and Start Up TroubleshootingParameters Fault Code Information and Maintenance Appendix a Specifications Appendix B Accessories Appendix C How to Select the Right AC Motor Drive Introduction Model Explanation Receiving and InspectionNameplate Information Series Number Explanation D007M23A0 T 5 External Parts and Labels Remove Instructions Remove Keypad Remove Front Cover RST Side UVW Side Preparation for Installation and Wiring Ambient Conditions Minimum Mounting Clearances 50 mm 150mm Dimensions Model Name This page intentionally left blank Installation and Wiring Basic Wiring Diagram L1 NFB Excellent Good Not allowed External Wiring Appendix a Main Circuit Main Circuit Connection Terminal SymbolMains power terminals R/L1, S/L2, T/L3 Explanation of Terminal Function Terminals B1, B2 for connecting external brake unit Output terminals for main circuit U, V, W Main Circuit Terminals AWG RA-RC Control Terminal Wiring Factory SettingsRB-RC AFM AVIACI M0~M5-GND Analog inputs AVI, ACI MO1MCM Digital outputs MO1 General Keypad and Start Up Keypad Description of the Digital Keypad How to Operate the Digital Keypad LC-M02E Displayed Message LC-M02E LED Keypad and Start Up Operation Method Trial Run Check following items Parameters Parameter Explanation Settings Factory Summary of Parameter SettingsSetting Parameter Explanation Settings Factory 00 M0 FWD/STOP, M1 REV/STOP Reset01 M0 RUN/STOP, M1 REV/FWD Second Source for Frequency Command FLA Parameter Explanation Settings Factory CFA PLC FWD/REV Only Input positive PID feedback, PV from AVI Parameter Explanation Settings Factory Parameter Explanation Settings Factory DC Braking before Running Applications Purpose Functions Parameter Settings for ApplicationsMulti-step Operation Applications Purpose Functions Operation Command Applications Purpose Two-wire/three-wire Applications PurposeWire Overheat Warning Applications Purpose Parameters Parameters Parameters Parameters Pr.01 Description of Parameter SettingsPr.00 Source of Frequency Command Pr.02 Stop Method Pr.03 Pr.04 Pr.08 Pr.06Pr.07 Pr.09 Commonly used V/F Setting General Purpose Pr.12 Pr.10Pr.11 Pr.13 Pr.15 Pr.14Pr.16 Pr.19 Pr.17Pr.18 Pr.20 Pr.24 Reverse Operation Inhibition Pr.26 Pr.27 Pr.28 Pr.30 Pr.29Pr.31 Pr.34 Pr.33Pr.35 Pr.36 Pr.37 Pr.38 Explanations Pr.40 Settings Function DescriptionPr.39 Pr.42 Settings Function Description GND First or Second Mx Close Run PLC Parameter value 18 programs Multi-Function Input Terminal Contact N.C. is reverse, once this function is set Pr.43 Analog Output Signal Pr.44 Pr.45 Pr.46 MO1 Pr.48 Pr.51 Potentiometer Reverse Motion EnablePr.47 Pr.49 Example Max Output Pr.03 Freq 60Hz Bias 10Hz Pr = FWD Pr.54 Pr.52Pr.53 Pr.55 Pr.58 Pr.59 Pr.62 Pr.60Pr.61 Pr.64 Pr.65 Pr.66 Pr.69 Pr.67Pr.68 Pr.70 Pr.73 Present Fault Record Pr.74 Pr.75 Third Most Recent Fault Record Pr.78 PLC Operation Mode Pr.76 Parameter Lock and ConfigurationPr.77 Program input off and then back on Example 2 Pr.78 = 02 Continuously executes program cycles Example 3 Pr.78 = 03 Execute one cycle step by step REV Weights =Forward =Reverse Bit Application Note Pr.82 Pr.80Pr.81 Pr.83 Pr.92 Communication Protocol Pr.89 Transmission Speed Baud rateComputer Control +15V 2 GND SG- 4 SG+ 6 for communication Data Format Ascii mode Communication Protocol ADR RTU modeStart END 6FH STX ADRLRC CHK F7H ‘6’ Starting data address ‘0’ ‘1’ B2H 0FHA0H CDH Starting address 21H 02H Read at one time CPU or analog circuit failure cF3 Parameters Void main Int OutportbPORT+MCR,0x08 Pr.95 Pr.93 Accel 1 to Accel 2 Frequency Transition Pr.94Pr.96 Pr.99 Pr.97Pr.98 Pr.100 Pr.103 Auto Tune Motor parameters Pr.104 R1 Value Pr.107 Pr.105 Control ModePr.106 Pr.108 Pr.113 Pr.112Cooling Fan Control PID Feedback Terminal Selection Integral Time Factory Setting 100 % PID Offset Level Settings To 50.0 % Inverts Reference Signal 0-20mA Wake Up Frequency Unit 0.10Hz Settings 00 to 400.0 Hz External Up/Down Selection Save Parameters Pr.155 Pr.157 Communication Mode SelectionReserved Pr.156 Parameters This page intentionally left blank Troubleshooting Over Current OC Ground Fault Over Voltage OV Low Voltage Lv Over Heat OH1 Overload Phase Loss PHL Keypad Display is Abnormal Motor cannot Run Motor Speed cannot be Changed Motor Stalls during Acceleration Motor does not Run as Expected Electromagnetic/Induction Noise Environmental Condition Serial reactor Phase lead capacitor Affecting Other Machines Common Problems and Solutions Fault Code InformationFault Name Fault Descriptions Fault Name Fault Descriptions Corrective Actions Fault Name Fault Descriptions Fault Name Fault Descriptions Reset Maintenance and Inspections Voltage Maintenance Check Items Methods and Criterion Main circuit Maintenance Check Items Methods and Criterion Keypad Maintenance Check Items Methods and CriterionChange of copper plate One One Daily 115V Class Voltage Class230V Class 460V Class General Specifications575V Class Analog Output Signal Analog frequency/current signal output This page intentionally left blank Appendix B Accessories All Brake Resistors & Brake Units Used in AC Motor Drives Appendix B Accessories Dimensions and Weights for Brake Resistors& Brake Units Dimensions are in millimeter Appendix B Accessories Non-fuse Circuit Breaker Chart Fuse Specification Chart AC Reactor AC Input Reactor Recommended Value AC Output Reactor Recommended Value Applications Mains circuit Diagram a Zero Phase Reactor RF220X00ADiagram B Remote Controller RC-01 VFD-M Programming PU06 Description of the Digital Keypad VFD-PU06 Explanation of Display Message Operation Flow Chart XX-XX 40TDS4W4B AMD EMI Filter Cross Reference16TDT1W4S Choose suitable motor cable and precautions Length of motor cable EMI Filter RF015M21AA / RF022M43AA Appendix B Accessories Din Rail Din Rail-DR01 Adapter Din Rail-DR02 Adapter Appendix C How to Select the Right AC Motor Drive Related Specification When one AC motor drive operates more than one motor When one AC motor drive operates one motorCapacity Formulas ⋅ IM ≤ the rated current of AC motor drive a Parameter Settings Note General PrecautionSelection Note How to Choose a Suitable Motor Standard motor Special motors 、 Pole-changing Dahlander motor Power Transmission Mechanism Motor torque This page intentionally left blank