Delta Electronics VFD-EL User Manual

Preface

Thank you for choosing DELTA’s multifunction VFD-EL Series. The VFD-EL Series is manufactured with high-quality components and materials and incorporate the latest microprocessor technology available.

This manual is to be used for the installation, parameter setting, troubleshooting, and daily maintenance of the AC motor drive. To guarantee safe operation of the equipment, read the following safety guidelines before connecting power to the AC motor drive. Keep this operating manual at hand and distribute to all users for reference.

To ensure the safety of operators and equipment, only qualified personnel familiar with AC motor drive are to do installation, start-up and maintenance. Always read this manual thoroughly before using VFD-EL series AC Motor Drive, especially the WARNING, DANGER and CAUTION notes.

Failure to comply may result in personal injury and equipment damage. If you have any questions, please contact your dealer.

PLEASE READ PRIOR TO INSTALLATION FOR SAFETY.

DANGER!

1.AC input power must be disconnected before any wiring to the AC motor drive is made.

2.A charge may still remain in the DC-link capacitors with hazardous voltages, even if the power has been turned off. To prevent personal injury, please ensure that power has turned off before opening the AC motor drive and wait ten minutes for the capacitors to discharge to safe voltage levels.

3.Never reassemble internal components or wiring.

4.The AC motor drive may be destroyed beyond repair if incorrect cables are connected to the input/output terminals. Never connect the AC motor drive output terminals U/T1, V/T2, and W/T3 directly to the AC mains circuit power supply.

5.Ground the VFD-EL using the ground terminal. The grounding method must comply with the laws of the country where the AC motor drive is to be installed. Refer to the Basic Wiring Diagram.

6.VFD-EL series is used only to control variable speed of 3-phase induction motors, NOT for 1- phase motors or other purpose.

7.VFD-EL series shall NOT be used for life support equipment or any life safety situation.

WARNING!

1.DO NOT use Hi-pot test for internal components. The semi-conductor used in AC motor drive easily damage by high-voltage.

2.There are highly sensitive MOS components on the printed circuit boards. These components are especially sensitive to static electricity. To prevent damage to these components, do not touch these components or the circuit boards with metal objects or your bare hands.

3.Only qualified persons are allowed to install, wire and maintain AC motor drives.

CAUTION!

1.DO NOT install the AC motor drive in a place subjected to high temperature, direct sunlight, high humidity, excessive vibration, corrosive gases or liquids, or airborne dust or metallic particles.

2.Some parameters settings can cause the motor to run immediately after applying power

3.Only use AC motor drives within specification. Failure to comply may result in fire, explosion or electric shock.

4.To prevent personal injury, please keep children and unqualified people away from the equipment.

5.When the motor cable between AC motor drive and motor is too long, the layer insulation of the motor may be damaged. Please use a frequency inverter duty motor or add an AC output reactor to prevent damage to the motor. Refer to appendix B Reactor for details.

6.The rated voltage for AC motor drive must be ≤ 240V (≤ 480V for 460V models) and the mains supply current capacity must be ≤ 5000A RMS.

Table of Contents

Preface .............................................................................................................		i
Table of Contents ..........................................................................................		iii
Chapter 1 Introduction................................................................................		1-1
1.1	Receiving and Inspection....................................................................	1-2
1.1.1 Nameplate Information................................................................		1-2
1.1.2 Model Explanation ......................................................................		1-2
1.1.3 Series Number Explanation ........................................................		1-3
1.1.4 Drive Frames and Appearances .................................................		1-3
1.1.5 Remove Instructions ...................................................................		1-5
1.2	Preparation for Installation and Wiring................................................	1-5
1.2.1 Ambient Conditions.....................................................................		1-6
1.2.2 DC-bus Sharing: Connecting the DC-bus of the AC Motor Drives in
Parallel.................................................................................................		1-8
1.3	Dimensions.........................................................................................	1-9
Chapter 2 Installation and Wiring ..............................................................		2-1
2.1	Wiring .................................................................................................	2-2
2.2	External Wiring ...................................................................................	2-8
2.3	Main Circuit.........................................................................................	2-9
2.3.1 Main Circuit Connection..............................................................		2-9
2.3.2 Main Circuit Terminals ..............................................................		2-11
2.4	Control Terminals .............................................................................	2-12

Chapter 3 Keypad and Start Up ..................................................................		3-1
3.1	Description of the Digital Keypad .......................................................	3-1
3.2	How to Operate the Digital Keypad ....................................................	3-3
3.3	Reference Table for the 7-segment LED Display of the Digital Keypad3-
4
3.4	Operation Method ..............................................................................	3-4
3.5	Trial Run ............................................................................................	3-5
Chapter 4 Parameters..................................................................................		4-1
4.1	Summary of Parameter Settings ........................................................	4-2
4.2	Parameter Settings for Applications .................................................	4-21
4.3	Description of Parameter Settings....................................................	4-26
Chapter 5 Troubleshooting .........................................................................		5-1
5.1	Over Current (OC)..............................................................................	5-1
5.2	Ground Fault ......................................................................................	5-2
5.3	Over Voltage (OV)..............................................................................	5-2
5.4	Low Voltage (Lv) ................................................................................	5-3
5.5	Over Heat (OH1) ................................................................................	5-4
5.6	Overload ............................................................................................	5-4
5.7	Keypad Display is Abnormal ..............................................................	5-5
5.8	Phase Loss (PHL) ..............................................................................	5-5
5.9	Motor cannot Run...............................................................................	5-6
5.10 Motor Speed cannot be Changed ....................................................		5-7
5.11 Motor Stalls during Acceleration.......................................................		5-8
5.12 The Motor does not Run as Expected..............................................		5-8
5.13 Electromagnetic/Induction Noise......................................................		5-9

5.14 Environmental Condition...................................................................		5-9
5.15 Affecting Other Machines ...............................................................		5-10
Chapter 6 Fault Code Information and Maintenance................................		6-1
6.1 Fault Code Information .......................................................................		6-1
6.1.1 Common Problems and Solutions...............................................		6-1
6.1.2 Reset ..........................................................................................		6-5
6.2 Maintenance and Inspections .............................................................		6-5
Appendix A Specifications ........................................................................		A-1
Appendix B Accessories ...........................................................................		B-1
B.1	All Brake Resistors & Brake Units Used in AC Motor Drives.............	B-1
B.1.1 Dimensions and Weights for Brake Resistors ............................		B-4
B.2	No Fuse Circuit Breaker Chart ..........................................................	B-7
B.3	Fuse Specification Chart ...................................................................	B-8
B.4	AC Reactor........................................................................................	B-9
B.4.1 AC Input Reactor Recommended Value.....................................		B-9
B.4.2 AC Output Reactor Recommended Value..................................		B-9
B.4.3 Applications ..............................................................................		B-10
B.5	Zero Phase Reactor (RF220X00A) .................................................	B-12
B.6	Remote Controller RC-01................................................................	B-13
B.7	PU06 ...............................................................................................	B-14
B.7.1 Description of the Digital Keypad VFD-PU06 ...........................		B-14
B.7.2 Explanation of Display Message...............................................		B-14
B.7.3 Operation Flow Chart ...............................................................		B-15
B.8	Fieldbus Modules ............................................................................	B-16

B.8.1 DeviceNet Communication Module (CME-DN01) .....................	B-16
B.8.1.1 Panel Appearance and Dimensions ..................................	B-16
B.8.1.2 Wiring and Settings ...........................................................	B-16
B.8.1.3 Power Supply ....................................................................	B-17
B.8.1.4 LEDs Display.....................................................................	B-17
B.8.2 LonWorks Communication Module (CME-LW01) .....................	B-17
B.8.2.1 Introduction .......................................................................	B-17
B.8.2.2 Dimensions .......................................................................	B-17
B.8.2.3 Specifications ....................................................................	B-18
B.8.2.4 Wiring ................................................................................	B-18
B.8.2.5 LED Indications .................................................................	B-18
B.8.3 Profibus Communication Module (CME-PD01).........................	B-19
B.8.3.1 Panel Appearance.............................................................	B-19
B.8.3.2 Dimensions .......................................................................	B-20
B.8.3.3 Parameters Settings in VFD-EL ........................................	B-20
B.8.3.4 Power Supply ....................................................................	B-20
B.8.3.5 PROFIBUS Address..........................................................	B-20
B.8.4 CME-COP01 (CANopen) ..........................................................	B-21
B.8.4.1 Product Profile...................................................................	B-21
B.8.4.2 Specifications ....................................................................	B-21
B.8.4.3 Components......................................................................	B-22
B.8.4.4 LED Indicator Explanation & Troubleshooting...................	B-23
B.9 MKE-EP & DIN Rail .........................................................................	B-25
B.9.1 MKE-EP ....................................................................................	B-25
B.9.2 DIN Rail: MKEL-DRA (Only for frame A)...................................	B-26

Appendix C How to Select the Right AC Motor Drive..............................

C-1

C.1	Capacity Formulas ............................................................................	C-2
C.2	General Precaution ...........................................................................	C-4
C.3	How to Choose a Suitable Motor.......................................................	C-5

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Chapter 1 Introduction

The AC motor drive should be kept in the shipping carton or crate before installation. In order to retain the warranty coverage, the AC motor drive should be stored properly when it is not to be used for an extended period of time. Storage conditions are:

CAUTION!

1.Store in a clean and dry location free from direct sunlight or corrosive fumes.

2.Store within an ambient temperature range of -20 °C to +60 °C.

3.Store within a relative humidity range of 0% to 90% and non-condensing environment.

4.Store within an air pressure range of 86 kPA to 106kPA.

5.DO NOT place on the ground directly. It should be stored properly. Moreover, if the surrounding environment is humid, you should put exsiccator in the package.

6.DO NOT store in an area with rapid changes in temperature. It may cause condensation and frost.

7.If the AC motor drive is stored for more than 3 months, the temperature should not be higher than 30 °C. Storage longer than one year is not recommended, it could result in the degradation of the electrolytic capacitors.

8.When the AC motor drive is not used for longer time after installation on building sites or places with humidity and dust, it’s best to move the AC motor drive to an environment as stated above.

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Chapter 1 Introduction|

1.1 Receiving and Inspection

This VFD-EL AC motor drive has gone through rigorous quality control tests at the factory before shipment. After receiving the AC motor drive, please check for the following:

Check to make sure that the package includes an AC motor drive, the User Manual/Quick Start and CD.

Inspect the unit to assure it was not damaged during shipment.

Make sure that the part number indicated on the nameplate corresponds with the part number of your order.

1.1.1 Nameplate Information

Example for 1HP/0.75kW 3-phase 230V AC motor drive

AC Drive Model				MODEL:VFD007EL23A
Input Spec.
				INPUT :3PH 200-240V 50/60Hz 5.1A
Output Spec.				OUTPUT :3PH 0-240V 4.2A 1.6kVA 0.75kW/1HP
Output Frequency Range				FREQUENCY RANGE : 0.1~600Hz
Serial Number & Bar Code
							007EL23A0T7140001
Software Version			00.92

1.1.2 Model Explanation

VFD 007 EL 23 A

Version Type A: Standard drive

Mains Input Voltage
11:115V 1-phase	21:230V 1-phase
23:230V 3-phase	43:460V 3-phase
VFD-EL Series
Applicable motor capacity
002: 0.25 HP(0.2kW)	015: 2 HP(1.5kW)
004: 0.5 HP(0.4kW)	022: 3 HP(2.2kW)

037: 5 HP(3.7kW)

Series Name (Variable Frequency Drive)

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1.1.3Series Number Explanation

007EL23A 0T 7 01

Production number Production week Production year 2007 Production factory

T: Taoyuan, W: Wujiang

230V 3-phase 1HP(0.75kW)

Model

If the nameplate information does not correspond to your purchase order or if there are any problems, please contact your distributor.

1.1.4 Drive Frames and Appearances

	0.25-2HP/0.2-1.5kW (Frame A)	1-5HP/0.75-3.7kW (Frame B)
	Input terminals	Input terminals cover
	(R/L1, S/L2, T/L3)	(R/L1, S/L2, T/L3)
	Digital keypad	Digital keypad
		Case body
	Control board cover
		Control board cover
	Output terminals	Output terminals cover
	(U/T1, V/T2, W/T3)
		(U/T1, V/T2, W/T3)

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Internal Structure

Digital keypad

NPN/PNP

ACI/AVI

RS485 port (RJ-45)

RFI Jumper Location

at the right side

NOTE

RFI jumper is near the input terminals as shown in the above figure and can be removed by taking

off screws.

	Frame	Power range	Models
			VFD002EL11A/21A/23A,
	A	0.25-2hp (0.2-1.5kW)	VFD004EL11A/21A/23A/43A,
			VFD007EL21A/23A/43A, VFD015EL23A/43A
	B	1-5hp (0.75-3.7kW)	VFD007EL11A, VFD015EL21A,
			VFD022EL21A/23A/43A, VFD037EL23A/43A

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RFI Jumper

RFI Jumper: The AC motor drive may emit the electrical noise. The RFI jumper is used to suppress the interference (Radio Frequency Interference) on the power line.

Main power isolated from earth:

If the AC motor drive is supplied from an isolated power (IT power), the RFI jumper must be cut off. Then the RFI capacities (filter capacitors) will be disconnected from ground to prevent circuit damage (according to IEC 61800-3) and reduce earth leakage current.

CAUTION!

1.After applying power to the AC motor drive, do not cut off the RFI jumper. Therefore, please make sure that main power has been switched off before cutting the RFI jumper.

2.The gap discharge may occur when the transient voltage is higher than 1,000V. Besides, electro-magnetic compatibility of the AC motor drives will be lower after cutting the RFI jumper.

3.Do NOT cut the RFI jumper when main power is connected to earth.

4.The RFI jumper cannot be cut when Hi-pot tests are performed. The mains power and motor must be separated if high voltage test is performed and the leakage currents are too high.

5.To prevent drive damage, the RFI jumper connected to ground shall be cut off if the AC motor drive is installed on an ungrounded power system or a high resistance-grounded (over 30 ohms) power system or a corner grounded TN system.

1.1.5 Remove Instructions

Remove Front Cover

Remove Fan

	Step 1	Step 2
1.2 Preparation for Installation and Wiring
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1.2.1 Ambient Conditions

Install the AC motor drive in an environment with the following conditions:

		Air Temperature:		-10 ~ +50°C (14 ~ 122°F) for UL & cUL
				-10 ~ +40°C (14 ~ 104°F) for side-by-side mounting
		Relative Humidity:		<90%, no condensation allowed
	Operation	Atmosphere		86 ~ 106 kPa
		pressure:
		Installation Site		<1000m
		Altitude:
		Vibration:		<20Hz: 9.80 m/s2 (1G) max
				20 ~ 50Hz: 5.88 m/s2 (0.6G) max
		Temperature:		-20°C ~ +60°C (-4°F ~ 140°F)
	Storage	Relative Humidity:		<90%, no condensation allowed
	Transportation	Atmosphere		86 ~ 106 kPa
		pressure:
		Vibration:		<20Hz: 9.80 m/s2 (1G) max
				20 ~ 50Hz: 5.88 m/s2 (0.6G) max
	Pollution	2: good for a factory type environment.
	Degree

Minimum Mounting Clearances

Frame A Mounting Clearances

Option 1 (-10 to +50°C)

120mm

50mm50mm

Option 2 (-10 to +40°C)	Air flow
120mm
50mm	Air Flow
50mm

120mm

120mm

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Frame B Mounting Clearances

Option 1 (-10 to +50°C)

150mm

50mm50mm

150mm

	Chapter 1 Introduction|
Option 2 (-10 to +40°C)	Air flow
150mm	Air Flow
50mm
50mm
150mm

CAUTION!

1.Operating, storing or transporting the AC motor drive outside these conditions may cause damage to the AC motor drive.

2.Failure to observe these precautions may void the warranty!

3.Mount the AC motor drive vertically on a flat vertical surface object by screws. Other directions are not allowed.

4.The AC motor drive will generate heat during operation. Allow sufficient space around the unit for heat dissipation.

5.The heat sink temperature may rise to 90°C when running. The material on which the AC motor drive is mounted must be noncombustible and be able to withstand this high temperature.

6.When AC motor drive is installed in a confined space (e.g. cabinet), the surrounding temperature must be within 10 ~ 40°C with good ventilation. DO NOT install the AC motor drive in a space with bad ventilation.

7.Prevent fiber particles, scraps of paper, saw dust, metal particles, etc. from adhering to the heatsink.

8.When installing multiple AC more drives in the same cabinet, they should be adjacent in a row with enough space in-between. When installing one AC motor drive below another one, use a metal separation between the AC motor drives to prevent mutual heating.

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Installation with Metal Separation		Installation without Metal Separation
120mm	150mm	120mm	150mm
		A	B
120mm	150mm
120mm	150mm	A	B
	Air flow
120mm	150mm	120mm	150mm
Frame A	Frame B
		Frame A	Frame B

1.2.2 DC-bus Sharing: Connecting the DC-bus of the AC Motor Drives in Parallel

1.This function is not for 115V models.

2.The AC motor drives can absorb mutual voltage that generated to DC bus when deceleration.

3.Enhance brake function and stabilize the voltage of the DC bus.

4.The brake module can be added to enhance brake function after connecting in parallel.

5.Only the same power system can be connected in parallel.

6.It is recommended to connect 5 AC motor drives in parallel (no limit in horsepower).

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power should be applied at the same time

(only the same power system can be connected in parallel) Power 208/220/230/380/440/480 (depend on models)

Braking

modules

U V W U V W U V W U V W

IM

IM

IM

IM

For frame A and B, terminal + (-) is connected to the terminal + (-) of the braking module.

1.3 Dimensions

(Dimensions are in millimeter and [inch])

W

W1

D

H H1

D

	Frame	W	W1	H	H1	D	Ø	ØD
	A	72.0[2.83]	59.0[2.32]	174.0[6.86]	151.6[5.97]	136.0[5.36]	5.4[0.21]	2.7[0.11]
	B	100.0[3.94]	89.0[3.50]	174.0[6.86]	162.9[6.42]	136.0[5.36]	5.4[0.21]	2.7[0.11]
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NOTE

Frame A: VFD002EL11A/21A/23A, VFD004EL11A/21A/23A/43A, VFD007EL21A/23A/43A,

VFD015EL23A/43A

Frame B: VFD007EL11A, VFD015EL21A, VFD022EL21A/23A/43A, VFD037EL23A/43A

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Chapter 2 Installation and Wiring

After removing the front cover, check if the power and control terminals are clear. Be sure to observe the following precautions when wiring.

General Wiring Information Applicable Codes

All VFD-EL series are Underwriters Laboratories, Inc. (UL) and Canadian Underwriters Laboratories (cUL) listed, and therefore comply with the requirements of the National Electrical Code (NEC) and the Canadian Electrical Code (CEC).

Installation intended to meet the UL and cUL requirements must follow the instructions provided in “Wiring Notes” as a minimum standard. Follow all local codes that exceed UL and cUL requirements. Refer to the technical data label affixed to the AC motor drive and the motor nameplate for electrical data.

The "Line Fuse Specification" in Appendix B, lists the recommended fuse part number for each VFD-EL Series part number. These fuses (or equivalent) must be used on all installations where compliance with U.L. standards is a required.

CAUTION!

1.Make sure that power is only applied to the R/L1, S/L2, T/L3 terminals. Failure to comply may result in damage to the equipment. The voltage and current should lie within the range as indicated on the nameplate.

2.All the units must be grounded directly to a common ground terminal to prevent lightning strike or electric shock.

3.Please make sure to fasten the screw of the main circuit terminals to prevent sparks which is made by the loose screws due to vibration.

4.Check following items after finishing the wiring:

A.Are all connections correct?

B.No loose wires?

C.No short-circuits between terminals or to ground?

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Chapter 2 Installation and Wiring|

DANGER!

1.A charge may still remain in the DC bus capacitors with hazardous voltages even if the power has been turned off. To prevent personal injury, please ensure that the power is turned off and wait ten minutes for the capacitors to discharge to safe voltage levels before opening the AC motor drive.

2.Only qualified personnel familiar with AC motor drives is allowed to perform installation, wiring and commissioning.

3.Make sure that the power is off before doing any wiring to prevent electric shock.

2.1 Wiring

Users must connect wires according to the circuit diagrams on the following pages. Do not plug a modem or telephone line to the RS-485 communication port or permanent damage may result. The pins 1 & 2 are the power supply for the optional copy keypad only and should not be used for RS-485 communication.

2-2	Revision August 2008, 2ELE, V1.02

Figure 1 for models of VFD-EL Series					Chapter 2 Installation and Wiring|
VFD002EL11A/21A, VFD004EL11A/21A, VFD007EL11A/21A, VFD015EL21A, VFD022EL21A
					BR	brake resi stor
					BUE	(opti onal)
					brake unit
					(optional)
Fus e/NF B(No Fuse B reaker)					+	-	Motor
R(L1)					R(L1)	U(T1)
							IM
S(L2)					S(L2)	V(T2)
Recommended Circui t						W(T3)	3~
when power s uppl y					E
is turned OFF by a						E
				SA
fault output
If the fault occ urs, the				MC	RB	RA
contact will be O N to							Multi-function c ontact output
					RC
turn off the power and			OFF	ON		RB	Refer to c hapter 2.4 for details .
protect the power sys tem.							Fac tory setting is
				MC			malfunction indication
						RC
					+24V
Factory setting:		FWD/Stop			MI1
		REV/Stop
					MI2
NPN Mode
NPN	Fac tory	Multi-s tep 1			MI3
Sw1
	setting	Multi-s tep 2			MI4
PNP		Multi-s tep 3
					MI5
Please refer to Figur e 3
for wiring of NPN		Multi-s tep 4			MI6	AFM	Analog Multifunc tion Output
mode and PNP
		Digital Si gnal Common					Terminal
mode.					DCM
							Refer to c hapter 2.4 for details .
					E	ACM	Analog S ignal common
						E
							Fac tory setting: output frequency
Factory setting:					+10V
			3		Power supply
AVI Mode
					+10V/3mA
	AVI	5K	2		AVI/ACI		RS-485
	Sw2				Master Frequency		Seri al interface
	ACI		1		0- 10V 47K		1: Reserved
					/4-20mA		2: EV
							3: G ND
					ACM	8 1	4: SG -
	Analog S ignal Common						5: SG+
					E		6: Reserved
							7: Reserved
							8: Reserved
	Main c irc ui t (power) terminals				Control c ircuit terminals		Shielded l eads & Cable

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	Chapter 2 Installation and Wiring|
	Figure 2 for models of VFD-EL Series
	VFD002EL23A, VFD004EL23A/43A, VFD007EL23A/43A, VFD015EL23A/43A,
	VFD022EL23A/43A, VFD037EL23A/43A					BR	brake resistor
						BUE	(optional)
						brake unit
		Fuse/NFB(No Fuse Breaker)				(optional)
	R(L1)					+	-	Motor
						R(L1)	U(T1)
								IM
	S(L2)					S(L2)	V(T2)
	T(L3)					T(L3)	W(T3)	3~
						E
	Recommended Circuit						E
	when power supply				SA
						RB
	is turned OFF by a				MC		RA	Multi-function contact output
	fault output.					RC		Refer to chapter 2.4 for details.
	If the fault occ urs, the			OFF	ON MC		RB
	contact will be ON to							Factory setting is
	turn off the power and protect the power sys tem.					+24V	RC	malfunction indication
			FWD/Stop
	Factory setting:					MI1
			REV/Stop
						MI2
	NPN Mode
	NPN	Factory	Multi-step 1			MI3
	Sw1
		setting	Multi-step 2			MI4
	PNP		Multi-step 3
	Please refer to Figure 3					MI5
	for wiring of NPN		Multi-step 4			MI6	AFM	Analog Multi-function Output
	mode and PNP
			Digital Signal Common					Terminal
	mode.					DCM
								Refer to chapter 2.4 for details.
						E	ACM
								Analog Signal common
							E
								Factory setting: output frequency
		Factory setting:				+10V		RS-485
		AVI Mode		3		Power supply
		AVI				+10V/3mA		Serial interface
		Sw2	5K	2		AVI/ACI
								1: Reserved
		ACI		1		Master Frequency		2: EV
						0-10V 47K
								3: GND
						/4-20mA
								4: SG-
						ACM	8 1	5: SG+
			Analog Signal Common			E		6: Reserved
								7: Reserved
								8: Reserved
		Main circuit (power) terminals				Control circuit terminals		Shielded leads & Cable

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Figure 3 Wiring for NPN mode and PNP mode A. NPN mode without external power

NPN

PNP

Factory setting

B. NPN mode with external power

NPN	24	+
	Vdc
	-

PNP

Factory setting

C. PNP mode without external power

NPN

Sw1

PNP

Factory setting

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D. PNP mode with external power

NPN

Sw1

PNP

Factory setting

+

24 Vdc -

CAUTION!

1.The wiring of main circuit and control circuit should be separated to prevent erroneous actions.

2.Please use shield wire for the control wiring and not to expose the peeled-off net in front of the terminal.

3.Please use the shield wire or tube for the power wiring and ground the two ends of the shield wire or tube.

4.Damaged insulation of wiring may cause personal injury or damage to circuits/equipment if it comes in contact with high voltage.

5.The AC motor drive, motor and wiring may cause interference. To prevent the equipment damage, please take care of the erroneous actions of the surrounding sensors and the equipment.

6.When the AC drive output terminals U/T1, V/T2, and W/T3 are connected to the motor terminals U/T1, V/T2, and W/T3, respectively. To permanently reverse the direction of motor rotation, switch over any of the two motor leads.

7.With long motor cables, high capacitive switching current peaks can cause over-current, high leakage current or lower current readout accuracy. To prevent this, the motor cable should be less than 20m for 3.7kW models and below. And the cable should be less than 50m for 5.5kW models and above. For longer motor cables use an AC output reactor.

8.The AC motor drive, electric welding machine and the greater horsepower motor should be grounded separately.

9.Use ground leads that comply with local regulations and keep them as short as possible.

10.No brake resistor is built in the VFD-EL series, it can install brake resistor for those occasions that use higher load inertia or frequent start/stop. Refer to Appendix B for details.

11.Multiple VFD-EL units can be installed in one location. All the units should be grounded directly to a common ground terminal, as shown in the figure below. Ensure there are no ground loops.

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Chapter 2 Installation and Wiring|

Excellent

Good

Not allowed

Revision August 2008, 2ELE, V1.02

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Chapter 2 Installation and Wiring|

2.2 External Wiring

	Power Supply
		FUSE/NFB
		Magnetic
		contactor
		Input AC
		Line Reactor
			Zero-phase
			Reactor
	EMI Filter			resistorBrake
R/L1	S/L2	T/L3	unitBrak
		+
			BUE	BR
U/T1	V/T2	-
		W/T3
			Zero-phase
			Reactor
		Output AC
		Line Reactor
	Motor

	Items	Explanations
	Power	Please follow the specific power
		supply requirements shown in
	supply
		Appendix A.
		There may be an inrush current
	Fuse/NFB	during power up. Please check the
		chart of Appendix B and select the
	(Optional)
		correct fuse with rated current. Use of
		an NFB is optional.
	Magnetic	Please do not use a Magnetic
		contactor as the I/O switch of the AC
	contactor
		motor drive, as it will reduce the
	(Optional)
		operating life cycle of the AC drive.
		Used to improve the input power
		factor, to reduce harmonics and
		provide protection from AC line
		disturbances. (surges, switching
	Input AC	spikes, short interruptions, etc.). AC
	Line Reactor	line reactor should be installed when
	(Optional)	the power supply capacity is 500kVA
		or more or advanced capacity is
		activated. The wiring distance should
		be ≤ 10m. Refer to appendix B for
		details.
		Zero phase reactors are used to
	Zero-phase	reduce radio noise especially when
		audio equipment is installed near the
	Reactor
		inverter. Effective for noise reduction
	(Ferrite Core
	Common	on both the input and output sides.
		Attenuation quality is good for a wide
	Choke)
		range from AM band to 10MHz.
	(Optional)
		Appendix B specifies the zero phase
		reactor. (RF220X00A)
		It is used to reduce electromagnetic
	EMI filter	interference. All 230V and 460V
		models are built-in EMI filter.
	Brake	Used to reduce the deceleration time
	Resistor and	of the motor. Please refer to the chart
	Brake Unit	in Appendix B for specific Brake
	(Optional)	Resistors.
		Motor surge voltage amplitude
	Output AC
		depends on motor cable length. For
	Line Reactor
		applications with long motor cable
	(Optional)	(>20m), it is necessary to install a

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Chapter 2 Installation and Wiring|

2.3Main Circuit

2.3.1 Main Circuit Connection

Brake Resistor(Optional)

			BR	Brake Unit
			BUE
No fuse breaker				(Optional)
(NFB)	MC	+		-
R		R(L1)		U(T1)
S		S(L2)		V(T2)
T		T(L3)
				W(T3)
		E
				E

Motor

IM 3~

Terminal Symbol

R/L1, S/L2, T/L3

U/T1, V/T2, W/T3

+, -

CAUTION!

Explanation of Terminal Function

AC line input terminals (1-phase/3-phase)

AC drive output terminals for connecting 3-phase induction motor

Connections for External Brake unit (BUE series) Earth connection, please comply with local regulations.

Mains power terminals (R/L1, S/L2, T/L3)

Connect these terminals (R/L1, S/L2, T/L3) via a non-fuse breaker or earth leakage breaker to 3-phase AC power (some models to 1-phase AC power) for circuit protection. It is unnecessary to consider phase-sequence.

It is recommended to add a magnetic contactor (MC) in the power input wiring to cut off power quickly and reduce malfunction when activating the protection function of AC motor drives. Both ends of the MC should have an R-C surge absorber.

Please make sure to fasten the screw of the main circuit terminals to prevent sparks which is made by the loose screws due to vibration.

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