Control Techniques UNI1203, UNI1204, UNI1205, UNI2201, UNI2202 Installation Manual

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Installation Guide

Universal Variable Speed Drive

for induction and servo motors

0.37kW to 22kW (0.5HP to 30HP)

Part Number: 0460–0037

Issue Number: 1

Unidrive

Unidrive VTC

Unidrive LFT

model sizes 1 to 3

General information

The manufacturer accepts no liability for any consequences resulting from inappropriate , negligent or incorrect installation or adjustment of the optional operating parameters of the equipment or from mismatching the variable speed drive (Drive) with the motor.

The contents of this User Guide are believed to be correct at the time of printing. In the interests of a commitment to a policy of continuous development and improvement, the manufacturer reserves the right to change the specification of the product or its performance, or the contents of the User Guide, without notice.

All rights reserved. No parts of this User Guide may be reproduced or transmitted in any form or by any means, electrical or mechanical including photocopying, recording or by any informationstorage or retrieval system, without permission in writing from the publisher.

Important...

Drive software version

This product is supplied with the latest version of user-interface and machine-control software. If this product is to be used with other Control Techniques variable speed drives in an existing system, there may be some differences between their software and the software in this product. These differences will cause a difference in functions. This may also apply to variable speed drives returned from a Control Techniques Service Centre.

If there is any doubt, contact a Control Techniques Drive Centre.

Author: RFD

Issue Code: uliu1

Issue Date: September 1999

S/W Version: 03.XX.XX

Contents

Chapter 1 Safety Information 1-1

1.1 Warnings, Cautions and Notes 1-1

1.2 Electrical safety – general warning 1-1

1.3 System design 1-1

1.4 Environmental limits 1-1

1.5 Compliance with regulations 1-1

1.6 Safety of personnel 1-1

1.7 Risk analysis 1-2

1.8 Motor 1-2

1.9 Adjusting parameters 1-2

2 Installing the Drive 2-1

2.1 Environmental requirements 2-1

2.2 EMC considerations 2-2

2.3 Planning the installation 2-3

2.4 Calculating the enclosure size 2-14

Appendix A Motor Connections A-1

A.1 Cable length A-1 A.2 Multiple motors A-1

B UL Listing Information B-1 C Data C-1

C.1 Drive C-1 C.2 Optional RFI filters C-6

2.5 Installing the Drive and RFI filter 2-16

2.6 Power connections 2.27

2.7 Wiring recommendations 2-30

2.8 Variations in the EMC wiring recommendations 2-36

2.9 Signal connections 2-37

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Declaration of Conformity

Control Techniques plc The Gro Newtown Powys UK SY16 3BE

UNI1201 UNI1202 UNI1203 UNI1204 UNI1205 UNI2201 UNI2202 UNI2203 UNI3201 UNI3202 UNI3203 UNI3204

The AC variable speed drive products listed above, including the VTC and LFT variants, have been designed and manufactured in accordance with the following European harmonised, national and international standards:

EN60249 Base materials for printed circuits IEC326-1 Printed boards: general information for the

IEC326-5 Printed boards: specification for single- and

IEC326-6 Printed boards: specification for multilayer

IEC664-1 Insulation co-ordination for equipment

EN60529 Degrees of protection provided by

UL94 Flammability rating of plastic materials UL508C Standard for power conversion equipment EN50081-11Generic emission standard for the

EN50081-2 Generic emission standard for the industrial

EN50082-2 Generic immunity standard for the

EN61800-3 Adjustable speed electrical power drive

Conducted emission. See the relevant EMC Data

Sheet.

specification writer

double-sided printed boards with plated-through holes

printed boards

within low-voltage systems: principles, requirements and tests

enclosures (IP code)

residential, commercial and light industrial environment

environment

industrial environment

systems – Part 3: EMC product standard including specific test methods

These products comply with the Low Voltage Directive 73/23/EEC, the Electromagnetic Compatibility (EMC) Directive 89/336/EEC and the CE Marking Directive 93/68/EEC.

W. Drury Executive Vice President, Technology Newtown

Date: 20th September 1999

These electronic Drive products are intended to be used with appropriate motors, controllers, electrical protection components and other equipment to form complete end products or systems. Compliance with safety and EMC regulations depends upon installing and configuring Drives correctly, including using the specified input filters. The Drives must be installed only by professional assemblers who are familiar with requirements for safety and EMC. The assembler is responsible for ensuring that the end product or system complies with all the relevant laws in the country where it is to be used. Refer to the Installation Guide. A Unidrive EMC Data Sheet is also available giving detailed EMC information.

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

1 Safety Information

1.1 Warnings, Cautions

and Notes

A Warning contains information which is essential for avoiding a safety hazard.

A Caution contains information which is necessary for avoiding a risk of damage to the product or other equipment.

A Note contains information which helps to ensure correct operation of the product.

1.2 Electrical safety – general warning

1.4 Environmental limits

Instructions in this Installation Guide regarding transport, storage, installation and use of Drives must be complied with, including the specified environmental limits. Drives must not be subjected to excessive physical force.

1.5 Compliance with regulations

The installer is responsible for complying with all relevant regulations, such as national wiring regulations, accident prevention regulations and electromagnetic compatibility (EMC) regulations. Particular attention must be given to the cross-sectional areas of conductors, the selection of fuses or other protection, and protective earth (ground) connections.

This Installation Guide contains instructions for achieving compliance with specific EMC standards.

The voltages used in the Drive can cause severe electric shock and/or burns, and could be lethal. Extreme care is necessary at all times when working with or adjacent to the Drive.

Specific warnings are given at the relevant places in this Installation Guide and the accompanying User Guide.

The installation must comply with all relevant safety legislation in the country of use.

1.3 System design

The Drive is intended as a component for professional incorporation into complete equipment or systems. If installed incorrectly the Drive may present a safety hazard. The Drive uses high voltages and currents, carries a high level of stored electrical energy, and is used to control mechanical equipment which can cause injury.

Close attention is required to the electrical installation and the system-design to avoid hazards either in normal operation or in the event of equipment malfunction. System-design, installation, commissioning and maintenance must be carried out by personnel who have the necessary training and experience. They must read this safety information and this Installation Guide carefully.

To ensure mechanical safety, additional safety devices such as electro-mechanical interlocks may be required. The Drive must not be used in a safetycritical application without additional high-integrity protection against hazards arising from a malfunction.

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Within the European Union, all machinery in which this product is used must comply with the following directives:

98/37/EC: Safety of Machinery 89/336/EEC: Electromagnetic Compatibility.

1.6 Safety of personnel

The STOP function of the Drive does not remove dangerous voltages from the output of the Drive or from any external option unit.

The Stop and Start controls or electrical inputs of the Drive must not be relied upon to ensure safety of personnel. If a safety hazard could exist from unexpected starting of the Drive, an interlock that electrically isolates the Drive from the must be installed to prevent the motor being inadvertently started.

Careful consideration must be given to the functions of the Drive which might result in a hazard, either through their intended functions (eg. Auto-start) or through incorrect operation due to a fault or trip (eg. stop/start, forward/reverse, maximum speed).

Under certain conditions, the Drive can suddenly discontinue control of the motor. If the load on the motor could cause the motor speed to be increased (eg. hoists and cranes), a separate method of braking and stopping the motor must be used (eg. a mechanical brake).

Safety Information 1-1

AC supply

Before connecting the AC supply to the Drive, it is important that you understand the operating controls and their operation. If in doubt, do not adjust the Drive. Damage may occur, or lives put at risk. Carefully follow the instructions in this Installation Guide.

Standard squirrel-cage induction motors are designed for single-speed operation. If it is intended to use the capability of the Drive to run a motor at speeds above its designed maximum, it is strongly recommended that the manufacturer is consulted first.

Before making adjustments to the Drive, ensure all personnel in the area are warned. Make notes of all adjustments that are made.

1.7 Risk analysis

In any application where a malfunction of the Drive could lead to damage, loss or injury, a risk analysis must be carried out, and where necessary, further measures taken to reduce the risk. This would normally be an appropriate form of independent safety back-up system using simple electromechanical components.

1.8 Motor

Ensure the motor is installed in accordance with the manufacturer’s recommendations. Ensure the motor shaft is not exposed.

Low speeds may cause the motor to over-heat because the cooling fan becomes less effective. The motor should then be fitted with a protection thermistor. If necessary, a separate cooling fan should be used.

If a Drive is to be used to control a number of motors, special measures need to be taken to ensure protection of the motors; refer to Motor protection in Appendix A Motor Information.

1.9 Adjusting parameters

Some parameters have a profound effect on the operation of the Drive. They must not be altered without careful consideration of the impact on the controlled system. Measures must be taken to prevent unwanted changes due to error or tampering.

1-2 Safety Information

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

2 Installing the Drive

Adhere to the instructions

Warning

Note

Unless otherwise stated, instructions and information in this Installation Guide relate to all versions of the Unidrive.

2.1 Environmental

Warning

The mechanical and electrical installation instructions must be adhered to. Any questions or doubt should be referred to the supplier of the equipment. It is the responsibility of the owner or user to ensure that the installation of the Drive and any external option unit, and the way in which they are operated and maintained, comply with the requirements of the Health and Safety at Work Act in the United Kingdom or applicable legislation and regulations and codes of practice in the country in which the equipment is used.

Competence of the installer

The Drive must be installed only by professional assemblers who are familiar with the requirements for safety and EMC. The assembler is responsible for ensuring that the end-product or system complies with all the relevant laws in the country where it is to be used.

requirements

Installation in an enclosure

The Drive must be protected against water, condensation and electrically conductive contamination. When the gland plate and appropriate glands are fitted, the Drive can attain ingress protection to NEMA 1 and IP40 (in accordance with IEC529). UL listing is valid when the Drive is installed in a type 1 enclosure as defined in UL 50.

Authorized access

Warning

The enclosure should prevent access by anyone except for authorized, trained service personnel.

Fire enclosure

Warning

The Drive case is not classified as a fire enclosure. When this protection is required, the Drive should be installed in a fire enclosure.

Hazardous areas

Warning

1. Refer to Appendix C Data for details of the

environmental requirements.

2. If condensation is likely to occur when the Drive

is not in use, an anti-condensation heater must be installed. This heater must be switched off when the Drive is in use; automatic switching is recommended.

3. If the Drive is to be mounted directly above any

heat-generating equipment (such as another Drive), the maximum temperature of the air immediately below the Drive should be taken as the ambient temperature for the Drive.

4. If the Drive is to be mounted beneath other

equipment, such as another Drive, the Drive should not cause the ambient temperature requirements of the equipment to be exceeded.

5. When compliance with EMC emission standards

is required, the enclosure must be made of metal but does not require special EMC features.

UL-listing requirements are given in Appendix B.

The Drive must not be located in a classified hazardous area unless the Drive is installed in an approved enclosure and the installation is certified.

Before a Drive is used in the fully sinusoidal Regeneration mode, the Drive and the accompanying motoring Drive(s) must be modified. Contact the supplier of the Drive for details.

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Installing the Drive 2-1

2.2 EMC considerations

Depending on the requirements of the installation, one of the following levels of electromagnetic compatibility (EMC) should be adopted:

Routine EMC precautions

These precautions are recommended when strict compliance with emission standards is not required. The risk of disturbing adjacent electronic equipment is minimized by adopting these precautions.

Compliance with EMC emission

standards

These precautions are recommended when strict compliance with emission standards is required. In addition, it is recommended that these precautions are taken when the Drive is installed in a residential area, or adjacent to sensitive electronic equipment such as radio receivers or similar.

Compliance with EN61800-3 (standard for Power Drive Systems)

Meeting the requirements of this standard depends on the environment that the Drive is intended to operate in, as follows:

Operation in the first environment

Observe the guidelines given in Compliance with EMC emission standards. An RFI filter will always

be required. Some model sizes may require additional filtering techniques to be applied.

Operation in the second environment

An RFI filter may not be required. Follow the guidelines given in Routine EMC precautions or

Compliance with EMC emission standards

depending on the requirements of the end user.

The second environment typically includes an industrial low-voltage power supply

Caution

Instructions are given later in this chapter for these levels of EMC. Refer to Appendix C Data for further information on compliance with EMC standards and definitions of environments.

Detailed instructions and EMC information are given in the Unidrive LV EMC Data Sheet which is available from the Drive Centres and distributors listed at the end of this Installation Guide.

Compliance data is given in Appendix C Data.

network which does not supply buildings used for domestic purposes. Operating the Drive in this environment without an RFI filter may cause interference to nearby electronic equipment whose sensitivity has not been appreciated. The user must take remedial measures if this situation arises. If the consequences of unexpected disturbances are severe, it is recommended that the emission limits of EN50081-2 be adhered to.

Note

The installer of the Drive is responsible for ensuring compliance with the EMC regulations that apply where the Drive is to be used.

The Drive will comply with the standards for emission, such as EN50081–2, only when the instructions given in Planning the installation and Wiring recommendations later in this chapter are followed closely.

2-2 Installing the Drive

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

2.3 Planning the installation

Model

UNI 1201

UNI 1202

UNI 1203

UNI 1204

UNI 1205

UNI 2201

UNI 2202

UNI 2203

UNI 3201

UNI 3202

UNI 3203

UNI 3204

Table 2–1 Fuse ratings for all versions of

the Unidrive LV

Instructions in numbered steps

The instructions in this section are contained in numbered steps. In some of these steps you will need to make a note of a value for future reference and, to help with identification, the number of the step.

AC supply protection

The

AC supply to the Drive must

be fitted with suitable

Warning

protection against overload and short-circuits. Table 2–1 shows recommended fuse ratings. Failure to observe this recommendation will cause a risk of fire.

TEP 1 Include a fuse of the specified rating in

each phase of the

AC supply. The use of the

following types of fuse is recommended:

• Europe: Type gG HRC industrial fuses to

IEC 269 (BS88)

• USA: RK1 600V

An MCB or MCCB having the correct thermal

and magnetic trip ratings may be used in place of fuses, on condition the fault-current clearing capacity is sufficient for the installation.

Power cables

Wiring must be in accordance with local regulations and

Warning

Cable type and size

codes of practice. The table below shows typical cable sizes for power input and output wiring. In the event of a conflict, local regulations prevail.

Fuse rating

6 A 10 A 10 A 16 A 16 A

16 A

20 A

35 A

40 A 60 A 70 A 80 A

Note

UL listing is dependent on the use of the correct type of UL-listed fuse, and applies when the symmetrical short-circuit current does not exceed 5kA. Refer to Appendix B UL Listing Information.

STEP 2 For the following power connections...

•

AC supply to RFI filter (when used)

•

AC supply (or RFI filter) to Drive

• Drive to motor

• Drive to braking resistor

... use 105°C (221°F) pvc-insulated cable of

suitable voltage rating and having copper conductors, as shown in Table 2–2.

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Installing the Drive 2-3

Table 2–2 Cable sizes

210

330

430

660

990

660

Table 2–3 Maximum cable lengths

Model Cable size

UNI 1201 1.5 mm UNI 1202 2.5 mm UNI 1203 2.5 mm UNI 1204 2.5 mm UNI 1205 2.5 mm UNI 2201 2.5 mm UNI 2202 4 mm UNI 2203 4 mm UNI 3201 6 mm UNI 3202 10 mm UNI 3203 16 mm UNI 3204 25 mm

16 AWG

14 AWG

14 AWG 10 AWG 10 AWG

8 AWG 6 AWG 4 AWG 4 AWG

When EMC emission requirements are to be

met, shielded cable or steel wire armoured cable may be required for the following:

AC supply to enclosure

•

• Drive to motor

• Drive to braking resistor when part of the

cable is outside the enclosure

For further details, see Wiring guidelines later in this chapter.

Motor cable

STEP 3 Since capacitance in the motor cable

causes loading on the output of the Drive, ensure the cable length does not exceed the values given in Table 2–3.

Note

Maximum length of the encoder cable

Model Maximum cable length *

UNI 1201 65 UNI 1202 100 UNI 1203 130 UNI 1204 200 UNI 1205 300

UNI 2201 ~ UNI 2203

UNI 3201 ~ UNI 3204

* Cable lengths in excess of the specified values may be used only when special techniques are adopted; refer to the supplier of the Drive.

(

PWM switching

frequency at 3kHz)

300

200

The maximum cable length is reduced from that

shown in the table under the following conditions:

PWM switching frequency exceeding

•

3kHz in model size 3 The maximum cable length is reduced in proportion to the increase in 9kHz, the maximum length is

PWM switching frequency, eg. at

/3 of that

shown.

• High-capacitance cables Most cables

have an insulating jacket between the cores and the armour or shield; these cables have a low capacitance and are recommended. Cables that do not have an insulating jacket tend to have high capacitance; if a cable of this type is used, the maximum cable length is half that quoted in the table. (Figure 2–1 shows how to identify the two types.)

When a Unidrive LV or Unidrive LFT LV is to be used in a closed-loop system and with long motor cables, the corresponding length of the encoder cable may cause an excessive supply-voltage drop between the Drive and encoder. In this case, do not use the Drive to supply the encoder; install a separate

DC supply close to the encoder.

2-4 Installing the Drive

Normal capacitance

Shield or armour separated from the cores

High capacitance

Shield or armour close to the cores

Figure 2–1 Cable construction influencing

the capacitance

Multiple motors

Special requirements apply when the Drive is to

control more than one motor. Refer to Appendix A Motor Connections.

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

Isolator switch in the motor cable

An isolator switch may be connected in the motor cable for safety purposes. Refer to the following Warning and Note.

The isolator switch must not be operated when the Drive is

AC-rated switch

Warning

enabled. (If an is used and the Drive is producing a low output frequency when the switch is opened, severe arcing can occur which will prevent the switch from breaking the circuit.)

A suitable interlock arrangement can be used, such as an isolator switch fitted with additional contacts that open before the main contacts. These additional contacts should be used to disable the Drive.

Note

If the isolator switch is closed when the Drive is enabled, the Drive may trip.

When EMC compliance is required, refer to Variations in the EMC wiring recommendations later in this

chapter.

The Drive has two forms of thermal protection for the power output stage (IGBT bridge), as follows:

1. A thermistor mounted on the heatsink monitors

the heatsink temperature. If this exceeds 95°C (203°F), the thermistor will cause the Drive to trip. The display will indicate Oh2.

2. Intelligent thermal modelling estimates (by

calculation) the junction temperature of the IGBTs. There are two temperature thresholds which cause the following to occur:

• If the first threshold is reached, the

PWM

switching frequency is halved in order to reduce dissipation in the IGBTs. (When the frequency is halved, the value of parameter

PWM switching frequency remains at the

0.41 value set by the user; if the frequency is 3kHz or 4.5kHz, no halving occurs). Then at one second intervals, the Drive will attempt to restore the original

PWM switching

frequency. This will be successful if the estimated temperature has reduced sufficiently.

• If the estimated temperature has continued

to rise and reaches a second threshold, the Drive will trip. The display will indicate Oh1.

TEP 4 Note that the Drive can deliver an

overload current, as shown in Table 2–4.

Table 2–4 Overload current

Output current,

PWM switching frequency,

Ambient temperature

Thermal protection

Note

The Drive can supply the rated current up to an ambient temperature of 40 (depending on the

PWM switching frequency

used).

The Drive can be operated in an ambient temperature up to 50

C (122oF) at de-rated output current. In this case, ensure the value of parameter 0.46 Motor rated current does not exceed the value given in Table 2-5.

C (104°°F)

Unidrive LV

Open-loop

Up to 150% of the rated current for 60 seconds

Closed-loop Vector

Up to 175% of the rated current for 60 seconds

Closed-loop Servo

Up to 175% of the rated current for 4 seconds

Unidrive VTC LV

For a variable-torque load

Up to 120% of the rated current for 60 seconds

Unidrive LFT LV operating on

standard S4/S5 duty cycle

Open-loop

Up to 150% of the rated current

Closed-loop Vector

Up to 175% of the rated current

Closed-loop Servo

Up to 175% of the rated current

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Installing the Drive 2-5

150% 100%

Frequency / speed

Current

50Hz 1500

RPM

20 60

Figure 2–2 Standard S4/S5 duty cycle

(Unidrive LFT LV)

Unidrive LV and Unidrive VTC LV Refer

to Table 2–5 to find the maximum continuous output current that can be obtained for the required ambient temperature and

PWM switching frequency. The maximum

ambient temperature can be 40°C or 50°C (104°F or 122°F). Note that the nominal power rating of the Drive may not be achieved above 40°C.

Unidrive LFT LV Refer to Table 2–6 to find

the maximum continuous output current that can be obtained for the ambient temperature for a standard S4/S5 duty-cycle or for continuous operation. Refer to a Drive Centre or distributor for information on other duty ratios.

Make a note of this step number and the

following:

• Unidrive LV and Unidrive VTC LV

Chosen maximum ambient temperature.

• Unidrive LV and Unidrive VTC LV

Chosen

PWM switching frequency for

each Drive.

• All Unidrive LV versions From Table 2–

7, the maximum power dissipation (heat) figure (PP

) at the chosen PWM switching

DISSDISS

frequency for each Drive (this figure is the total power dissipation at the maximum continuous output current available at the chosen

PWM switching frequency, and

includes power dissipated in option modules when fitted). Power dissipation in the Unidrive LFT is the same as that for the standard Unidrive when operating at 9kHz

PWM switching frequency.

Caution

Operation in a maximum ambient temperature of 50°°C (122°°F)

Unless the precaution described here is taken, the Drive will limit the maximum continuous output current only to the value for 40°°C, and not to the value stated in Table 2–5 for 50°°C.

Make a note of the value for 50°°C; you will need to refer to it when you reach Configuring the Drive for the motor in Chapter 2 of the User Guide.

At that point, ensure that the value to be entered in parameter 0.46 Motor – rated current does not exceed the noted value.

• Unidrive LV and Unidrive VTC LV If

the maximum ambient temperature will be 50°C (122°F), note the value of the maximum permissible output current obtained from Table 2–5. This will be the maximum value that parameter 0.46 Motor – rated current should be set at.

2-6 Installing the Drive

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

Table 2–5 Maximum permissible continuous output current for Unidrive LV and Unidrive VTC LV

40°°C (104°F)

ambient

Model kW HP 3kHz 4.5kHz 6kHz 9kHz 12kHz

UNI 1201 0.37 kW 0.5 2.1 A 2.1 A 2.1 A 2.1 A 2.1 A UNI 1202 0.55 kW 0.75 2.8 A 2.8 A 2.8 A 2.8 A 2.8 A UNI 1203 0.75 kW 1.0 3.8 A 3.8 A 3.8 A 3.8 A 3.8 A UNI 1204 1.1 kW 1.5 5.6 A 5.6 A 5.6 A 5.6 A 4.5 A UNI 1205 2.2 kW 3.0 9.5 A 9.5 A 8.5 A 7.0 A 5.5 A

UNI 2201 3.0 kW 4.0 12.0 A 12.0 A 12.0 A 12.0 A 11.7 A UNI 2202 4.0 kW 5.0 16.0 A 16.0 A 16.0 A 14.2 A 11.7 A UNI 2203 5.5 kW 10.0 25.0 A 21.7 A 18.2 A 14.2 A 11.7 A

UNI 3201 7.5 kW 15.0 34.0 A 34.0 A 34.0 A 28.0 A 23.0 A UNI 3202 11 kW 20.0 46.0 A 46.0 A 40.0 A 32.0 A 26.6 A UNI 3203 15 kW 25.0 60.0 A 47.0 A 40.0 A 32.0 A 26.7 A UNI 3204 22 kW 30.0 74.0 A 56.0 A 46.0 A 35.0 A 28.0 A

50°°C (122°F)

ambient

Model kW HP 3kHz 4.5kHz 6kHz 9kHz 12kHz

UNI 1201 0.37 kW 0.5 2.1 A 2.1 A 2.1 A 2.1 A 2.1 A UNI 1202 0.55 kW 0.75 2.8 A 2.8 A 2.8 A 2.8 A 2.8 A UNI 1203 0.75 kW 1.0 3.8 A 3.8 A 3.8 A 3.8 A 3.3 A UNI 1204 1.1 kW 1.5 5.6 A 5.6 A 5.1 A 4.0 A 3.3 A UNI 1205 2.2 kW 3.0 6.9 A 5.9 A 5.1 A 4.0 A 3.3 A

UNI 2201 3.0 kW 4.0 12.0 A 12.0 A 12.0 A 11.6 A 9.7 A UNI 2202 4.0 kW 5.0 16.0 A 16.0 A 14.7 A 11.6 A 9.7 A UNI 2203 5.5 kW 10.0 20.0 A 17.3 A 14.7 A 11.6 A 9.7 A

UNI 3201 7.5 kW 15.0 34.0 A 34.0 A 28.0 A 21.0 A 17.9 A UNI 3202 11 kW 20.0 44.0 A 36.0 A 31.0 A 24.0 A 20.6 A UNI 3203 15 kW 25.0 44.0 A 36.0 A 31.0 A 24.0 A 20.9 A UNI 3204 22 kW 30.0 50.0 A 41.0 A 34.0 A 26.0 A 23.0 A

Nominal

rating

Nominal

rating

Maximum permissible

continuous output current

Maximum permissible

continuous output current

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Installing the Drive 2-7

Table 2–6 Maximum permissible output current for Unidrive LFT LV

Continuous

operation at 40°C

2.1 A

2.8 A

3.8 A

4.0 A

4.3 A

12.0 A

14.2 A

28.0 A

32.0 A

33.0 A

35.0 A

Model

UNI 1201

UNI 1202

UNI 1203

UNI 1204

UNI 1205

UNI 2201

UNI 2202

UNI 2203

UNI 3201

UNI 3202

UNI 3203

UNI 3204

(at 9kHz

PWM switching frequency)

Model Nominal

rating

kW HP Standard duty cycle

at 40°°C

UNI 1201 LFT 0.37 kW 0.5 2.1 A UNI 1202 LFT 0.55 kW 0.75 2.8 A UNI 1203 LFT 0.75 kW 1.0 3.8 A UNI 1204 LFT 1.1 kW 1.5 5.6 A UNI 1205 LFT 2.2 kW 3.0 9.5 A

UNI 2201 LFT 3.0 kW 4.0 12.0 A UNI 2202 LFT 4.0 kW 5.0 16.0 A UNI 2203 LFT 5.5 kW 10.0 25.0 A

UNI 3201 LFT 7.5 kW 15.0 34.0 A UNI 3202 LFT 11 kW 20.0 46.0 A UNI 3203 LFT 15 kW 25.0 60.0 A UNI 3204 LFT 22 kW 30.0 74.0 A

Maximum permissible output current

Continuous

operation at 50°°C

2.1 A

2.8 A

3.3 A

11.0 A

21.0 A

24.0 A

26.0 A

Table 2–7 Maximum total power dissipation (Unidrive LV, Unidrive VTC LV and Unidrive LFT LV)

Nominal

rating

kW HP 3kHz 4.5kHz 6kHz 9kHz 12kHz

0.37kW 0.5 80 W 80 W 90 W 90 W 90 W

0.55kW 0.75 90 W 90 W 100 W 100 W 110 W

0.75kW 1.0 100 W 110 W 110 W 120 W 130 W

1.1kW 1.5 130 W 130 W 140 W 150 W 150 W

2.2kW 3.0 180 W 190 W 190 W 190 W 170 W

3.0kW 4.0 210 W 230 W 250 W 280 W 310 W

4.0kW 5.0 270 W 290 W 310 W 320 W 310 W

5.5kW 10.0 400 W 380 W 360 W 330 W 310 W

7.5kW 15.0 570 W 620 W 670 W 660 W 630 W

11kW 20.0 730 W 800 W 770 W 730 W 700 W

15kW 25.0 950 W 830 W 790 W 740 W 710 W

22kW 30.0 1090 W 990 W 920 W 850 W 800 W

Maximum total power dissipation

The default PWM switching frequency is a follows...

2-8 Installing the Drive

Unidrive LV and Unidrive VTC LV: 3kHz Unidrive LFT LV: 9kHz

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

Using an RFI filter

Using a braking resistor

STEP 5 For compliance with the emission

standards such as EN 50081-1 or EN 50081-2, use the recommended RFI filter as shown in Table 2–8. Use one RFI filter for each Drive. (Standards that are met are specified in Appendix C Data)

Make a note of this step number and the

following for each filter to be used:

• Size code or part number

• Maximum power dissipation figure

• IP rating

Table 2–8 RFI filter data

Model RFI filter

rating

UNI 1201 UNI 1202 UNI 1203 UNI 1204 UNI 1205

UNI 2201 UNI 2202 UNI 2203

UNI 3201 UNI 3202 UNI 3203 UNI 3204

Size Part

number

4200–0010 25 IP20

4200–0027 40 IP20

4200–1051 60 IP00

4200–1071 100 IP00

Maximum

power

dissipation

(W)

Model size 1

When the motor cable is to exceed 50m (165 feet), use RFI filter size B (4200–0027).

Braking occurs when the Drive is decelerating the motor, or is preventing the motor from gaining speed due to mechanical influences. During braking, energy is returned to the Drive by the motor.

When the motor is being braked by the Drive, the maximum regenerated power that the Drive can absorb is equal to the power dissipation (losses) of the Drive.

When the regenerated power is likely to exceed these losses, a braking resistor must be connected.

By default, the Drive brakes the motor under PI control which extends the deceleration time as necessary in order to keep the

DC bus at a constant

voltage. The method of braking can be changed; if required, refer to Appendix D Menu 0 Parameters in the User Guide.

Note

When a braking resistor is used, the Drive should be operated in FASt ramp mode. If this is not done, instability may arise. See Braking resistor in Chapter 2 of the User Guide.

Housing the resistor, and routing the connecting cable

High temperatures

Braking resistors can reach

Warning

high temperatures. Locate braking resistors so that damage cannot result.

Use cable having insulation capable of withstanding high temperatures.

Overload protection

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Warning

It is essential that an overload protection device is incorporated in the braking resistor circuit; this is described in Protection circuit for an optional braking resistor in

TEP 8.

Installing the Drive 2-9

STEP 6 When a braking resistor is to be mounted

outside the enclosure, ensure that it is mounted in a ventilated metal housing that will perform the following functions:

• Prevent inadvertent contact with the

resistor

• Allow adequate ventilation for the resistor

When compliance with EMC emission standards

is required, external connection requires the cable to be armoured or shielded, since it is not fully contained in a metal enclosure.

Internal connection does not require the cable

to be armoured or shielded.

Minimum resistances and power ratings

Table 2–9 Minimum resistance values and

peak power rating for the braking resistor at 40°°C (104°°F)

Model Minimum

resistance

UNI 1201 ~ UNI 1205 20Ω 15kW UNI 2201 20Ω 15kW UNI 2202, UNI 2203 15Ω 20kW UNI 3201 ~ UNI 3204 5Ω 60kW

The minimum resistance allows the braking resistor to dissipate up to approximately 300% of the power rating of the Drive for up to 60 seconds.

For high-inertia loads or under continuous braking, the continuous power dissipated in the braking resistor may be as high as the power rating of the Drive. The total energy dissipated in the braking resistor is dependent on the amount of energy to be extracted from the load.

The instantaneous power rating refers to the short-term maximum power dissipated during the on intervals of the pulse width modulated braking control cycle. The braking resistor must be able to withstand this dissipation for short intervals (milliseconds). Higher resistance values require proportionately lower instantaneous power ratings.

In most applications, braking occurs only occasionally. This allows the continuous power rating of the braking resistor to be much lower than the power rating of the Drive. It is essential, though, that the instantaneous power rating and energy rating of the braking resistor are sufficient for the most extreme braking duty that is likely to be encountered.

Instantaneous

power rating

Optimization of the braking resistor requires a careful consideration of the braking duty. This is described more fully in Optimizing an optional braking resistor in the Unidrive Advanced User Guide.

TEP 7 Select a value of resistance for the braking

resistor that is not less than the specified minimum resistance. Larger resistance values may give a cost saving, as well as a safety benefit in the event of a fault in the braking system. Braking capability will then be reduced, which may cause the Drive to trip during braking. If this occurs, refer to Deceleration rate in Chapter 2 of the User Guide.

TEP 8 Estimate the average power that will be

dissipated in the resistor. A method of estimating this power is described in Optimizing

an optional braking resistor in the Unidrive Advanced User Guide. Make a note of this step

number and the average power to be dissipated in the resistor.

Thermal protection circuit for the braking resistor

The thermal protection circuit must disconnect the

AC supply from the Drive if the resistor becomes

overloaded. Figure 2–3 shows a typical circuit arrangement.

Optional RFI filter

Stop

Start / Reset

Thermal protection device

Braking resistor

Figure 2–3 Typical protection circuit for a

braking resistor

Drive

2-10 Installing the Drive

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

Enclosure layout

STEP 9 Use one of the following enclosure

layouts, depending on the requirements of the installation:

Routine EMC precautions Refer to

Figure 2–4 which shows the recommended layout for two Drives, and the signal and power cables.

Compliance with EMC emission

standards Refer to Figure 2–5 which shows the recommended layout for two Drives, two RFI filters, and the signal and power cables.

TEP 10 Decide whether the enclosure is to be

sealed or ventilated, as follows:

A sealed enclosure can give a high ingress-

protection rating, but with reduced heat removal capabilities. If possible, locate heatgenerating equipment (other than braking resistors) in the lower part of the enclosure to encourage internal convection. If necessary, a taller enclosure, and/or air-circulation fans inside the enclosure, can be used. For calculating the minimum size of sealed enclosure that will adequately cool the Drive(s), refer later in this chapter to Calculating the size

of a sealed enclosure.

If a high ingress-protection rating is not

required, a ventilated enclosure can be used with a fan to supply forced air cooling; this can give a lower ambient temperature than a sealed enclosure. For calculating the minimum required volume of cooling air, refer later in this chapter to Calculating the air-flow in a ventilated enclosure.

TEP 11 For compliance with EMC emission

standards, ensure the enclosure is fitted with an unpainted metal back-plate for mounting the Drive and RFI filter. For example, a zinc plated steel back-plate is suitable (see Figure 2–5).

TEP 12 Ensure the Drive is installed vertically for

best flow of cooling air through the Drive and heatsink.

TEP 13 Ensure the clearances around the Drive are

as follows:

Above and below: ≥100mm (4 in)

Both sides: ≥5mm (

/4 in)

Note

When surface mounting a model size 3, allow a clearance of 150mm (6in) above the Drive; this is required for dismounting. A minimum clearance of 100mm (4in) is required for ventilation.

For overall dimensions and weights of the Drive

and RFI filter, see Appendix C Data.

TEP 14 When compliance with EMC emission

standards is required, the RFI filter must be installed at the specified position for each Drive (see Figure 2–5).

TEP 15 When a braking resistor is to be used, it

can be installed outside or inside the enclosure. When installed inside, it must be mounted in the upper part of the enclosure to prevent it heating the other equipment by convection.

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Installing the Drive 2-11

Optional braking resistors as required for the Drives

External: Mount on top surface of enclosure. Internal: Mount in top part of enclosure.

Drives

Ensure minimum clearances are respected.

System controller

Locate as required.

Signal cables

Plan for all signal cables to be routed at least 300mm (12in) distant from any power cable.

Power cables

AC supply isolator, contactor, and fuses or MCBs

Locate as required.

≥100mm (4in)

≥5mm

(¼in)

Overload protection device

≥100mm (4in)

Location of optional terminal block

Alternative location of fuses or MCBs

Locate as required.

≥5mm

(¼in)

Back-plate

Enclosure

Figure 2–4 Recommended layout for routine EMC precautions (wiring recommendations

are given in Figure 2–21)

2-12 Installing the Drive

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

Optional braking resistors as required for the Drives

External: Mount on top surface of enclosure. Internal: Mount in top part of enclosure.

Overload protection device

Alternative location of fuses or MCBs

Drives and RFI filters

Ensure minimum clearances are respected.

Locate as required.

≥5mm

(¼in)

≥100mm (4in)

≥5mm

(¼in)

System controller

Locate as required.

Signal cables

Plan for all signal cables to be routed at least 300mm (12in) distant from any power cable.

RFI filters

nstall a separate RFI

filter for each Drive.

Power cables

AC supply isolator, contactor, and fuses or MCBs

Locate as required.

Alternative location of fuses or MCBs

Locate as required.

≥5mm

(¼in)

150mm (6in)

Location of optional terminal block

Enclosure

Figure 2–5 Recommended layout for compliance with EMC emission standards

(wiring recommendations are given in Figures 2–22 and 2–23)

Back-plate

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Installing the Drive 2-13

2.4 Calculating the

enclosure size

STEP 1 Add the dissipation figures from step 4 of

Planning the installation for each Drive that is to be installed in the enclosure. Make a note of this step number and the total value.

TEP 2 If an RFI filter is to be used with each

Drive, add the dissipation figures from step 5 of Planning the installation for each RFI filter that is to be installed in the enclosure. Make a note of this step number and the total value.

TEP 3 If the braking resistor is to be mounted

inside the enclosure, add the average power figures from step 8 of Planning the installation for each braking resistor that is to be installed in the enclosure. Make a note of this step number and the total value.

TEP 4 Make a note of this step number and the

total heat dissipation (in Watts) of any other equipment to be installed in the enclosure.

TEP 5 Add the heat dissipation figures obtained

(as appropriate) from steps 1, 2, 3 and 4 above. This gives a figure in Watts for the total heat that will be dissipated inside the enclosure. Make a note of this figure and the step number.

Calculating the size of a sealed enclosure

P Power in Watts dissipated by all heat

sources in the enclosure

k Heat transmission coefficient of the

enclosure material in W/m

/°C

Example

To calculate the size of an enclosure for the following:

• Two UNI 1205 models

• Each Drive to operate at 4.5kHz

switching frequency

• RFI filter for each Drive

• Braking resistors are to be mounted outside

the enclosure

• Maximum ambient temperature inside the enclosure: 40°C

• Maximum ambient temperature outside the enclosure: 30°C

Dissipation of each Drive: 190W (from step 4 in Planning the installation)

Dissipation of each RFI filter: 25W (max) (from step 5 in Planning the installation)

Total dissipation: 2 x (190 + 25) = 430W

The enclosure is to be made from painted 2mm

/32in) sheet steel having a heat transmission

( coefficient of 5.5W/m

/°C. Only the top, front, and

two sides of the enclosure are to be free to dissipate heat.

PWM

The enclosure transfers internally generated heat into the surrounding air by natural convection (or external forced air flow); the greater the surface area of the enclosure walls, the better is the dissipation capability. Only the surfaces of the enclosure that are unobstructed (not in contact with a wall or floor) can dissipate heat.

Calculate the minimum required unobstructed surface area A

for the enclosure from:

k(T - T )

int ext

Where:

Unobstructed surface area in m

(1m2 = 10.8 ft2)

ext

Maximum expected ambient temperature in °C outside the enclosure

int

Maximum permissible ambient temperature in °C inside the enclosure

Figure 2–6 Enclosure having front, sides and

top panels free to dissipate heat

2-14 Installing the Drive

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

Insert the following values:

40°C

int

30°C

ext

k 5.5 P 430W

The minimum required heat conducting area is then:

430

5.5(40 - 30)

= 7.8m (85ft )

(1m = 3.3 ft)

Estimate two of the enclosure dimensions — the height (H) and depth (D), for instance. Calculate the width (W) from:

A - 2HD

H+D

Inserting H = 2m and D = 0.6m, obtain the minimum width:

××××

7.8 - (2 )

20621.

2+0.6

m (6ft 10in)

If the enclosure is too large for the space available, it can be made smaller only by attending to one or all of the following:

• Using a lower

PWM switching frequency to

reduce the dissipation in the Drives (return to step 4 in Planning the installation)

• Reducing the ambient temperature outside

the enclosure, and/or applying forced-air cooling to the outside of the enclosure

• Reducing the number of Drives in

the enclosure

• Removing other heat-generating equipment

Calculating the air-flow in a ventilated enclosure

Where:

V Air-flow in m T

ext

Maximum ambient temperature in °C

per hour

outside the enclosure

int

Maximum ambient temperature in °C inside the enclosure

P Power in Watts dissipated by all heat

sources in the enclosure

k Ratio of

Where:

is the air pressure at sea level

is the air pressure at the

installation

Typically use a factor of 1.2 to 1.3, to allow also for pressure-drops in dirty air-filters.

Example

To calculate the size of an enclosure for the following:

• Three UNI 3201 models

• Each Drive to operate at 6kHz

frequency

• RFI filter for each Drive

• Braking resistors are to be mounted outside

the enclosure

• Maximum ambient temperature inside the enclosure: 40°C

• Maximum ambient temperature outside the enclosure: 30°C

Dissipation of each Drive: 670W (from step 4 in Planning the installation)

Dissipation of each RFI filter: 60W (max) (from step 5 in Planning the installation)

Total dissipation: 3 x (670 + 60) = 2190W

PWM switching

The dimensions of the enclosure are required only for accommodating the equipment. The equipment is cooled by the forced air flow.

Calculate the minimum required volume of ventilating air from:

3kP

T-T

ext

int

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Insert the following values:

40°C

int

30°C

ext

k 1.3 P 2190W

Then:

32190

××××

40-30

==13854

(1m3/hr = 0.59ft3/min)

Installing the Drive 2-15

m / hr (504 ft

/min)

2.5 Installing the Drive and RFI filter

Lifting the Drive

Warning

The weight of model size 3 is 22kg (49 lbs). Use appropriate safeguards when lifting this model.

Removing the terminal covers

The Drive is fitted with one or two terminal covers depending on the model size. When model sizes 1 and 3 are through-panel mounted, the terminal cover(s) must first be removed in order for access to be gained to the lower mounting holes.

Figure 2–8 View from the underside showing

how a terminal cover is removed from the Drive

Remove terminal covers, as follows:

1. Working on either side of the terminal cover,

push the inner edge of the cover firmly outward until it becomes unclipped.

2. Swing the side of the cover outward and

upward until the remaining clips become released.

3. Remove the gland plate (you may need to

replace it later).

Figure 2–7 Removing the terminal covers

The terminal cover(s) of all models must be removed for access to the electrical connectors.

2-16 Installing the Drive

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

Mounting brackets supplied with the Drive

Table 2–10 General views of the

mounting brackets

Model

size

Through-panel Surface

Upper and lower

Surface-mounting the Drive

1. Use the two surface-mounting brackets. These

are manufactured from metal. Ensure the brackets make direct electrical contact with the back-plate; for example, tap M6 ( threaded holes in the back-plate in the positions shown in Figure 2–10 to accept the mounting screws. (For model size 1, you may use the central or, preferably, the two outer screw holes in the mounting bracket.)

2. Insert the surface mounting brackets into the

slots in the top and bottom of the Drive heatsink, as shown in Figure 2–9.

/4 in)

Upper

Lower

Rear view of the brackets. The brackets are not shown to scale.

Fixing hole size: M6 (1/4 in)

Figure 2–9 General representation showing

the fitting of a surface mounting bracket in a heatsink

3. Retain the mounting brackets to the back-plate

using electrically conducting screws.

Note

When surface mounting a model size 3, allow a clearance of 150mm (6in) above the Drive; this is required for dismounting. A minimum clearance of 100mm (4in) is required for ventilation.

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Installing the Drive 2-17

Model size 1

Model size 2

Back-plate

Figure 2–10 Surface mounting of model sizes 1 and 2

2-18 Installing the Drive

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

Model size 3

Figure 2–11 Surface mounting of model size 3

Back -plate

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Installing the Drive 2-19

Model size 1

Model size 2

Back-plate

Figure 2–12 Through-panel mounting of model sizes 1 and 2

2-20 Installing the Drive

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

Model size 3

Figure 2–13 Through-panel mounting of model size 3

Back-plate

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Installing the Drive 2-21

Through-panel mounting the Drive

1. Cut an aperture in the back-plate as shown in

Figure 2–12 or 2–13 as appropriate.

2. Use the through-panel mounting bracket. This

is manufactured from metal and is used to secure the top of the Drive to the back-plate; the bottom of the Drive is secured to the backplate by screw(s) passed through a hole in the casing and heatsink.

Ensure the bracket and heatsink make direct

electrical contact with the back-plate; for example, tap M6 ( back-plate in the positions shown in Figure 2–12 or 2–13 to accept the mounting screws.

3. Insert the through-panel mounting bracket into

the recess in the top of the Drive heatsink, as shown in Figure 2–14.

/4 in) threaded holes in the

4. If a seal is required between the Drive and the

back-plate, attach the foam sealing strip (supplied with the Drive) around the edges of the aperture in the back-plate so that the flange on the heatsink will press against the foam strip.

5. Insert the Drive into the aperture.

6. Secure the bottom of the Drive to the panel

using electrically conducting screw(s).

7. Secure the through-panel mounting bracket to

the panel using electrically conducting screw(s).

When the Drive is throughpanel mounted, a baffle plate must be fitted at the rear of

Caution

the heatsink.

Fitting a baffle plate

If the Drive has been used, the heatsink may be hot. Human contact with the heatsink

Warning

should be restricted.

Figure 2–14 General representation showing

the fitting of a through-panel mounting bracket in the top of the Drive

When the Drive is through-panel mounted, the fitting of a baffle plate causes the heatsink to act as a chimney; this enhances the air flow along the heatsink fins to aid cooling (this naturally occurs when the Drive is surface mounted).

You may make a baffle plate from any suitable conducting or non-conducting material and attach it to the heatsink by the method described as follows.

2-22 Installing the Drive

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

Figure 2–15 Dimensions for the fabrication

of baffle plates for model sizes 1 and 2

Attaching a fabricated baffle plate to the heatsink

Table 2–12 Methods of attaching

the baffle plate

Figure 2–16 Dimensions for the fabrication

of baffle plates for model size 3

Model

size

Use the surface mounting brackets.

3 Use M6 x 12mm max (or equivalent)

thread-forming screws to screw into the holes in the heatsink, or tap the holes to a suitable thread size.

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Method of attachment

Installing the Drive 2-23

This page is intentionally not used

2-24 Installing the Drive

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

Mounting the RFI filter

RFI filter size

4200–0027

388mm

151/4 in

114.5mm

41/2 in

335mm

133/16 in

37.5mm

11/2 in

6.4mm

/4 in

406mm

16 in

10mm

/8 in

75mm

215/

The RFI filters can be surface-mounted only.

Mount the RFI filter at the specified location in relation to the Drive. In the case of filter sizes C to D, ensure the

LOAD terminals face the Drive.

Dimension

C 378mm

D 114.5mm

E 335mm

F 25mm

G 6.4mm

H 396mm

J 10mm

W 50mm

4200–0010

/8 in

/2 in

/16 in

1 in

/4 in

/16 in

/8 in

/16 in

Figure 2–17 Principal dimensions of RFI filters

sizes A and B, and the locations of the terminals

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Installing the Drive 2-25

Figure 2–18 Principal dimensions of RFI filters sizes C and D, and the locations of the terminals

2-26 Installing the Drive

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

Dimension RFI filter size

4200–1051D4200–1071

A 15mm

B 160mm

/16 in

C 305mm

12 in

D 15mm

F 12.5mm

G 6.5mm

H 145mm

J 280mm

/16 in

/2 in

/4 in

/16 in

K 25mm

1 in

L 330mm

13 in

M 35mm

N 60mm

P 45mm

Q 240mm

S 80mm

T 30mm

/8 in

/4 in

/16 in

/8 in

/16 in

U 50mm

2 in

V 40mm

W 190mm

X 40mm

/16 in

/2 in

/16 in

15mm

160mm

65/16 in

305mm

12 in 15mm

12.5mm

6.5mm

145mm

511/16 in

280mm

113/16 in

25mm

1 in

330mm

13 in

35mm

13/8 in

60mm

23/8 in

45mm

13/4 in

240mm

97/16 in

80mm

31/8 in

30mm

13/16 in

50mm

2 in

40mm

19/16 in

190mm

71/2 in

40mm

19/16 in

Z M5 x 10mm M5 x 10mm

Terminals M8 M8

/16 in

/2 in

/4 in

2.6 Power connections

Electric shock risk

Warning

The voltages present in the following locations can cause severe electric shock and may be lethal:

AC supply cables and

connections Output cables and

connections Many internal parts of the

Drive, and external option units

Isolation device

The AC supply must be disconnected from the Drive using an approved isolation device before any cover is removed from the Drive or before any servicing work is performed.

Stored charge

The Drive contains capacitors that remain charged to a potentially lethal voltage after

AC supply has been

the disconnected. If the Drive has been energized, the must be isolated at least ten minutes before work may continue.

supply by plug and socket

Special attention must be given if the Drive is installed in equipment which is connected to the socket. The terminals of the Drive are connected to the internal capacitors through rectifier diodes which do not give isolation. If the plug terminals can be touched when the plug is disconnected from the socket, a means of automatically isolating the plug from the Drive must be used (eg. a latching relay).

AC supply by a plug and

AC supply

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Installing the Drive 2-27

STOP function

Warning

The STOP function does not remove dangerous voltages from the Drive or any external option units.

Ground leakage current – model size 3

Warning

Ground leakage current is typically 5mA at 220V 50Hz. A fixed ground connection must be made before applied. In some applications, safety regulations require a duplicate ground connection.

Measured by the method described in IEC950 Annex D.

AC power is

Ground connections (earthing, equi-potential bonding)

The ground terminal of the Drive must be connected to the system ground of the The ground wiring must conform to local regulations and codes of practice.

AC supply.

Power and ground terminals

Refer to Wiring recommendations later in this chapter.

The ground loop impedance must conform to the

Warning

requirements of local safety regulations.

The Drive must be grounded by a connection capable of carrying the prospective fault current until the protective device (fuse, etc) disconnects

AC supply.

the The ground connections must

be inspected and tested at appropriate intervals.

Figure 2–20 Locations of the power and

ground terminals

Terminal sizes and tightening torques

To avoid a fire hazard and maintain validity of the UL listing, adhere to the specified

Warning

tightening torques for the power and ground terminals. Refer to the following tables.

2-28 Installing the Drive

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

Drive

Power cables

20mm

/4 in

20mm

/4 in

28mm

11/16 in

Table 2–13 Mechanical data for the

Drive terminals

Model

size

1 Plug-in

2 Plug-in

3 M10 stud 15 N.m

Torque tolerance ±10%

terminals

Size

Type

terminal block

Power

Torque Size

0.5 N.m

4.4 lb.inM4(Torx/

0.5 N.m

4.4 lb.inM4(Torx/

11 lb.ft

Ground

terminal

Type

slot-head screw)

M10 stud 15 N.m

RFI filter

Table 2–14 Mechanical data for the

RFI filter terminals

Size Power

Torque tolerance ±10%

terminals

Size

Type

Screw terminals

M8 stud 12.6 N.m

Torque Size

0.7 N.m

6. lb.in

0.7 N.m

6. lb.in

9 lb.ft

Ground

terminal

Type

Screw terminals

M8 stud 12.6 N.m

Torque

3 N.m

2.2 lb.ft

3 N.m

2.2 lb.ft

11 lb.ft

Torque

0.7 N.m

6. lb.in

0.7 N.m

6. lb.in

9 lb.ft

Using the gland plate and cable glands

When the gland plate(s) are not fitted, objects less than 60mm

/2 in) wide can pass through

Warning

Fit the gland plate and cable glands as required. Before fitting cable glands, push out sufficient blanking caps from the gland plate.

Note that the IP rating of the Drive is reduced if any holes in the gland plate are left open. The rating is affected as follows:

Gland plate not fitted IP00 Gland plate fitted

Unused holes uncovered Gland plate and glands fitted

Blanking caps covering unused holes

Table 2–15 Diameters of the holes in

Model

size

1 20mm

2 20mm

3 20mm

(2 the cable entry opening and possibly make contact with live parts inside the Drive.

IP10

IP40

the gland plate

Gland plate hole diameter

Control signal

wiring

/4 in

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Installing the Drive 2-29

2.7 Wiring recommendations

Observe the wiring recommendations given in this section. Recommendations are given separately for the following:

Routine EMC precautions

• Recommended when strict compliance with

emission standards is not required.

• Minimized risk of disturbing adjacent

electronic equipment.

Key to symbols

Single power cable Three-core power cable or

three single power cables Four-core power cable

(3-phase + ground) Ground cable

No sensitive circuits permitted in this zone

Compliance with EMC emission

standards

• Strict compliance with emission standards.

• When the Drive is installed in a residential

area, or adjacent to sensitive electronic equipment such as radio receivers or similar.

The details of individual installations may vary, but details which are indicated in the recommendations to be important for EMC must be adhered to closely.

For further details when EMC emission requirements are to be met, refer to the Unidrive LV EMC Data Sheet for the size of Drive used.

Optional external braking resistor

AC supply

L1 L2 L3

Ground

Output 3 Output 2 Output 1

Ground

Host controller

Isolator Contactor

Fuses or MCB

Control cables to the Drives

Power-ground bus-bar

Drive

L1 L2 L3 U VW+

Back-plate

Enclosure

Figure 2–21 Wiring guidelines for routine EMC precautions (model sizes 1 to 3)

2-30 Installing the Drive

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

Routine EMC precautions (model sizes 1 to 3)

General features

1. Single power-ground bus-bar, or low-

impedance ground terminal.

2. Incoming

power ground bus-bar.

3. Connect grounds of any other circuits to the

power ground bus-bar.

4. Site ground, if required.

5. Metal back-plate, safety bonded to the power

ground bus-bar.

6. System isolator, circuit contactors and

fuses/MCB.

7. Alternative position for Drive fuses/MCB.

8. Motor-frame ground connection, if required.

9. Optional braking resistor mounted externally,

protected by a metal grille.

10. Thermal protection device to protect the

braking resistor.

AC supply ground connected to the

Routine EMC precautions

11 Use four-core cable to connect the motor to

the Drive as shown. The ground conductor in the motor cable must be connected only to the ground terminals of the Drive and motor; it must not be connected directly to the powerground bus-bar.

12. If the wiring for sensitive signal circuits is to be

parallel to an unshielded motor cable (or cables for an unfiltered power supply) for more than 1 metre (3 feet), ensure the separation is at least 0.3m (12 in).

If the parallel run is to exceed 10 metres (30

feet), increase the separation proportionally. For example, if the parallel run is to be 40 metres, the spacing must be 0.3 x 40 ÷ 10 =

1.2 metres.

When a motor-thermistor is used, this

constraint does not apply to the cable connecting the thermistor to the Drive. The motor-thermistor cable must be shielded (as shown in Figures 3–4 and 3–5 in the User Guide).

13. Do not place sensitive signal circuits in a zone

extending 0.3m (12 in) all around the Drive.

14. If the control circuit 0V is to be grounded, this

should be done at the system controller (eg. PLC) and not at the Drive. This is to avoid injecting noise currents into the 0V circuit.

15. When the braking-resistor wiring is unshielded,

ensure a minimum spacing of 0.3m (12 in) from signal wiring.

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Installing the Drive 2-31

Key to symbols

AC supply

L1 L2 L3

Ground

Single power cable Three-core power cable or

three single power cables Ground cable

Connection to cable armour or shield

Maximu m length: 50mm (2 in)

Alternative safety ground connection

Armoured or shielded cable (3-phase + ground)

No sensitive circuits permitted in this zone

Output 3 Output 2 Output 1

Ground

Host controller

Isolator Contactor

Fuses or MCB

Control cables to the Drives

≤100mm (4 in)

Optional external braking resistor

5 − 10mm

( /4 − /8 in)

Drive

L1 L2 L3 U VW+

L1 L2 L3

RFI filter

Back-plate

Power-ground bus-bar

Enclosure

Figure 2–22 Wiring guidelines for compliance with EMC emission standards (model sizes 1 and 2)

2-32 Installing the Drive

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

Compliance with EMC emission standards (model sizes 1 and 2)

General features

1. Single power ground bus-bar or low-impedance

ground terminal.

2. Incoming

power ground bus-bar.

3. Connect grounds of any other circuits to the

power ground bus-bar.

4. Site ground if required.

5. Metal back-plate, safety bonded to the power

ground bus-bar.

6. System isolator, circuit contactors and

fuses/MCB.

7. Alternative position for Drive fuses.

8. Optional braking resistor mounted externally,

protected and shielded by a metal grille.

9. Thermal overload device to protect the

braking resistor.

10. Alternative safety ground for the motor.

11. Motor-frame ground connection, if required.

AC supply ground connected to the

Special features for EMC

12. Drive heatsink directly grounded to the

back-plate using the metal mounting-brackets. Ensure that the screws make direct electrical connection to the back-plate, for example by using screw threads tapped in the backplate.

13. RFI filter mounted at the side of the Drive.

Ensure a separation of 5 to 10mm ( from the Drive. The RFI filter casing is directly grounded to the back-plate by the fixing screws.

14. A shielded (screened) or steel-wire armoured

cable must be used to connect the Drive to the motor. The shield must be bonded to the back-plate using an uninsulated metal cableclamp. The clamp must be positioned no further than 100mm (4 in) from the Drive.

15. Connect the shield of the motor cable to the

ground terminal of the motor frame using a link that is as short as possible and not exceeding 50mm (2 in) in length. A full 360° termination of the shield to the terminal housing of the motor is beneficial.

16. Ensure the

AC supply and ground cables are at

least 100mm (4 in) from the Drive.

/4 to 3/8 in)

17. Avoid placing sensitive signal circuits in a zone

extending 0.3m (12 in) all around the Drive.

18. Unshielded wiring to the optional braking

resistor(s) may be used, provided the resistor is either in the same enclosure as the Drive or the wiring does not run external to the enclosure. When the braking-resistor wiring is unshielded, ensure a minimum spacing of 0.3m (12 in) from signal wiring and the

AC supply wiring to the

RFI filters.

19. If the control circuit 0V is to be grounded, this

should be done at the host controller (eg. PLC) and not at the Drive. This is to avoid injecting noise currents into the 0V circuit.

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Installing the Drive 2-33

Key to symbols

AC supply

L1 L2 L3

Single power cable Three-core power cable or

three single power cables Ground cable

Connection to cable armour or shield

Maximu m length: 50mm (2 in)

Alternative safety ground connection

Armoured or shielded cable (3-phase + ground)

No sensitive circuits permitted in this zone

Output 3 Output 2 Output 1

Ground

Host controller

Isolator Contactor

Fuses or MCB

Control cables to the Drives

150mm (6 in)

Optional external braking resistor

Drive

L1L2L3

L2´L3´

L1´ E´

LOAD

RFI filter

LINE

L1 L2 L3

UVW

≤150mm (6 in)

Ground

Power-ground bus-bar

Back-plate

Enclosure

Figure 2–23 Wiring guidelines for compliance with EMC emission standards (model size 3)

2-34 Installing the Drive

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

Compliance with EMC emission standards (model size 3)

General features

1. Single power ground bus-bar or low-impedance

ground terminal.

2. Incoming

AC supply ground connected to the

power ground bus-bar.

3. Connect grounds of any other circuits to the

power ground bus-bar.

4. Site ground if required.

5. Metal back-plate, safety bonded to the power

ground bus-bar.

6. System isolator, circuit contactors and

fuses/MCB.

7. Alternative position for Drive fuses.

8. Optional braking resistor mounted externally,

protected and shielded by a metal grille.

9. Thermal overload device to protect the

braking resistor.

10. Alternative safety ground for the motor.

11. Motor-frame ground connection, if required.

Special features for EMC

12. Drive heatsink directly grounded to the

back-plate using fixing screws. Screw threads tapped into the back-plate must be used to ensure that a direct electrical connection is made. An unpainted back-plate (eg. zincplated steel) is required.

13. RFI filter mounted 150mm (6 in) from the Drive.

The RFI filter casing is directly grounded to the back-plate by the fixing screws. Minimize the length of cables between the Drive and RFI filter.

14. A shielded (screened) or steel-wire armoured

15. Connect the shield of the motor cable to the

16. Ensure the

AC supply and ground cables are at

least 100mm (4 in) from the motor cable.

17. Avoid placing sensitive signal circuits in a zone

extending 0.3m (12 in) all around the Drive.

18. Unshielded wiring to the optional braking

AC supply wiring to the

RFI filters.

19. If the control circuit 0V is to be grounded, this

should be done at the host controller (eg. PLC) and not at the Drive. This is to avoid injecting noise currents into the 0V circuit.

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Installing the Drive 2-35

2.8 Variations in the EMC wiring recommendations

Control wiring

Control wiring which is connected to the Drive and leaves the enclosure must have one of the following additional treatments:

• Pass the control cable(s) through a ferrite

ring (part number 3225-1004). More than one cable can pass through a ferrite ring. Ensure the length of cable between the ferrite ring and the Drive is not greater than 125mm (5 in).

• Use one or more cables having a separate

overall shield. Bond this shield(s) to the back-plate using an uninsulated metal clamp. Position the clamp not further than 100mm (4 in) from the Drive. Do not make any other connections to either end of the overall shield.

Terminal block in the enclosure

The motor cable shields should be bonded to the back-plate using uninsulated metal cable-clamps which should be positioned as close as possible to the terminal block. Keep the length of power conductors to a minimum and ensure that all sensitive equipment and circuits are at least 0.3m (12 in) away from the terminal block.

From the Drive

Interruptions to the motor cable

The motor cable should ideally be a single piece of shielded or armoured cable having no interruptions. In some situations it may be necessary to interrupt the cable, as in the following examples:

Connecting the motor cable to a terminal block in the Drive enclosure

Fitting a motor isolator switch for safety when work is done on the motor

In these cases the following guidelines should be followed.

Back-plate

Enclosure

To the motor

(Refer to Key to symbols in Figure 2–22)

Figure 2–24 Connecting the motor cable to

a terminal block in the enclosure

2-36 Installing the Drive

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

Using a motor isolator-switch

The motor cable shields should be connected by a very short conductor having a low inductance. The use of a flat metal coupling-bar is recommended; conventional wire is not suitable.

The shields should be bonded directly to the coupling-bar using uninsulated metal cable-clamps. Keep the length of the exposed power conductors to a minimum and ensure that all sensitive equipment and circuits are at least 0.3m (12 in) away.

The coupling-bar may be grounded to a known low-impedance ground nearby, for example a large metallic structure which is connected closely to the Drive ground.

Isolator

From the Drive

Coupling bar

(If required)

To the motor

(Refer to Key to symbols in Figure 2–22)

Figure 2–25 Connecting the motor cable to

an isolator switch

2.9 Signal connections

The signal connections to be made depend on the method of control to be used. Refer to Chapter 2 Getting Started, Chapter 3 Setting up the Drive and Appendix C Signal Connections in the User Guide.

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Installing the Drive 2-37

2-38 Installing the Drive

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

A Motor Connections

A.2 Multiple motors

Open-loop only

A.1 Cable length

It is not recommended that a Drive is operated with a motor-cable length greater than that specified in the table in Planning the installation in Chapter 2. If this is unavoidable, it is recommended that a sinusoidal filter is used to prevent the components from entering the motor cable. Sinusoidal filters are available from specialist filter suppliers.

PWM switching

If the Drive is to control more than one motor, make connections as shown in Figure A–1. The maximum cable lengths given in the table in Chapter 2 Installing the Drive apply to the total length of cable from the Drive to the farthest motor.

It is recommended that each motor is connected through a protection relay since the Drive cannot protect each motor. For star connection, a sinusoidal filter or an output inductor must be connected as shown in Figure A–1, even when the cable lengths are less than the maximum permissible. For details, of inductor sizes refer to a Drive Centre or distributor listed at the end of the User Guide.

Motor protection relay

Chain connection (preferred) Star connection

Figure A–1 Connecting motors in parallel

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Inductor

Motor connections A-1

A-2 Motor connections

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

B UL Listing Information

FLC (A)

2.1

2.8

3.8

5.6

9.5

FLC (A)

2.1

2.8

3.8

4.0

4.3

12.0

14.2

28.0

32.0

35.0

Table B–1 Maximum continuous output

current for standard and VTC models

The Drive conforms to UL listing requirements only when the following are observed:

• The Drive is installed in a type 1 enclosure, or

better, as defined by UL50

• UL-listed fuses class RK1 600V

AC supply

the

AC are used in

• Class 1 60/75°C (140/167°F) copper wire only

is used in the installation

• The ambient temperature does not exceed 40°C (104°F) when the Drive is operating

• The terminal tightening torques specified in the table in Terminal sizes and tightening torques in Chapter 2 Installing the Drive are used

2.1 AC supply specification

The Drive is suitable for use in a circuit capable of delivering not more than 5000 Amperes at 268V

AC RMS maximum.

RMS symmetrical

2.2 Maximum continuous output current

The Drive models are listed as having the maximum continuous output currents (FLC) shown in Tables B–1 and B–2 (see Appendix C Data for details).

Model

UNI 1201 UNI 1202 UNI 1203 UNI 1204 UNI 1205 UNI 2201 UNI 2202 UNI 2203 UNI 3201 UNI 3202 UNI 3203 UNI 3204

Table B–2 Maximum continuous output

current for LFT models

Model

UNI 1201 LFT UNI 1202 LFT UNI 1203 LFT UNI 1204 LFT UNI 1205 LFT

UNI 2201 LFT UNI 2202 LFT UNI 2203 LFT

UNI 3201 LFT UNI 3202 LFT UNI 3203 LFT UNI 3204 LFT

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

UL listing 2-1

2-2 UL listing

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

C Data

C.1 Drive

Power and current ratings

The input current is affected by the supply voltage and impedance. Therefore, to aid the selection of cables and fuses, the values of Maximum continuous input current stated are for the worst-case condition.

The values of maximum current for models 1201 to 1205 are stated for a 200V times the kVA of the Drive, with 2% negative phase-sequence imbalance and a typical motor load.

The values of maximum current for models 2201 to 2203 and 3301 to 3304 are stated for a 200V

AC supply having a 5kA short-circuit capability and a

2% negative phase-sequence imbalance.

The values of Typical input current are stated for a balanced 200V short-circuit capability; these values are given to aid calculations for power flow and power loss.

AC supply rated at ten

AC supply having a 5kA

Unidrive LV and Unidrive VTC LV (at 40°°C ambient temperature)

Model Nominal

rating

kW HP 3kHz 4.5kHz 6kHz 9kHz 12kHz

UNI 1201 0.37 kW 0.5 2.1 A 2.1 A 2.1 A 2.1 A 2.1 A 2.4 A 4.0 A UNI 1202 0.55 kW 0.75 2.8 A 2.8 A 2.8 A 2.8 A 2.8 A 3.5 A 6.0 A UNI 1203 0.75 kW 1.0 3.8 A 3.8 A 3.8 A 3.8 A 3.8 A 4.6 A 8.0 A UNI 1204 1.1 kW 1.5 5.6 A 5.6 A 5.6 A 5.6 A 4.5 A 6.5 A 10.0 A UNI 1205 2.2 kW 3.0 9.5 A 9.5 A 8.5 A 7.0 A 5.5 A 8.6 A 12.5 A

UNI 2201 3.0 kW 4.0 12.0 A 12.0 A 12.0 A 12.0 A 11.7 A 10.8 A 13.9 A UNI 2202 4.0 kW 5.0 16.0 A 16.0 A 16.0 A 14.2 A 11.7 A 14.3 A 16.9 A UNI 2203 5.5 kW 10.0 25.0 A 21.7 A 18.2 A 14.2 A 11.7 A 19.8 A 27.0 A

UNI 3201 7.5 kW 15.0 34.0 A 34.0 A 34.0 A 28.0 A 23.0 A 26.0 A 28.0 A UNI 3202 11 kW 20.0 46.0 A 46.0 A 40.0 A 32.0 A 26.6 A 39.0 A 43.0 A UNI 3203 15 kW 25.0 60.0 A 47.0 A 40.0 A 32.0 A 26.7 A 53.0 A 56.0 A UNI 3204 22 kW 30.0 74.0 A 56.0 A 46.0 A 35.0 A 28.0 A 78.0 A 84.0 A

Maximum permissible

continuous output current

Typical

input

current

Maximum

current

cont.

input

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Data C-1

Unidrive LV and Unidrive VTC LV (at 50°°C ambient temperature)

Model Maximum permissible

3kHz 4.5kHz 6kHz 9kHz 12kHz

UNI 1201 2.1 A 2.1 A 2.1 A 2.1 A 2.1 A UNI 1202 2.8 A 2.8 A 2.8 A 2.8 A 2.8 A UNI 1203 3.8 A 3.8 A 3.8 A 3.8 A 3.3 A UNI 1204 5.6 A 5.6 A 5.1 A 4.0 A 3.3 A UNI 1205 6.9 A 5.9 A 5.1 A 4.0 A 3.3 A

UNI 2201 12.0 A 12.0 A 12.0 A 11.6 A 9.7 A UNI 2202 16.0 A 16.0 A 14.7 A 11.6 A 9.7 A UNI 2203 20.0 A 17.3 A 14.7 A 11.6 A 9.7 A

UNI 3201 34.0 A 34.0 A 28.0 A 21.0 A 17.9 A UNI 3202 44.0 A 36.0 A 31.0 A 24.0 A 20.6 A UNI 3203 44.0 A 36.0 A 31.0 A 24.0 A 20.9 A UNI 3204 50.0 A 41.0 A 34.0 A 20.0 A 23.0 A

continuous output current

Unidrive LFT LV (at 9kHz

UNI 1201LFT 0.37 kW 0.5 2.1 A 2.1 A 2.1 A 3.1 A UNI 1202LFT 0.55 kW 0.75 2.8 A 2.8 A 2.8 A 3.2 A UNI 1203LFT 0.75 kW 1.0 3.8 A 3.8 A 3.3 A 5.5 A UNI 1204LFT 1.1 kW 1.5 5.6 A 4.0 A 3.3 A 8.4 A UNI 1205LFT 2.2 kW 3.0 9.5 A 4.3 A 3.3 A 9.5 A

UNI 2201LFT 3.0 kW 4.0 12.0 A 12.0 A 11.0 A 13.7 A UNI 2202LFT 4.0 kW 5.0 16.0 A 14.2 A 11.0 A 16.3 A UNI 2203LFT 5.5 kW 10.0 25.0 A 14.2 A 11.0 A 24.3 A

UNI 3201LFT 7.5 kW 15.0 34.0 A 28.0 A 21.0 A 34.0 A UNI 3202LFT 11 kW 20.0 46.0 A 32.0 A 24.0 A 46.0 A UNI 3203LFT 15 kW 25.0 60.0 A 33.0 A 24.0 A 59.0 A UNI 3204LFT 22 kW 30.0 74.0 A 35.0 A 26.0 A 74.0 A

PWM switching frequency)

Model Nominal

rating

kW HP Standard

Maximum permissible output current Nominal AC

duty-cycle

operation

at 40°°C

Continuous

operation

at 40°C

Continuous

operation

at 50°°C

supply current

C-2 Data

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

AC supply requirements

Current ratings

Voltage: 200V ~ 240V ±10%

No. of phases: 3

Maximum supply imbalance: 2% negative phase sequence (equivalent to 3% voltage imbalance between phases)

Frequency range: 48 to 62 Hz

Line reactors

Line reactors reduce the risk of damage to the Drive that could result from severe phase unbalance or disturbances on the supply network. As a result of the following, for example...

• Power factor correction equipment

connected close to the Drive

• Large

• Direct-on-line started motor(s) connected

...excessive peak current may flow in the input power circuit of the Drive. Such disturbances may cause nuisance tripping or in extreme cases, failure of the Drive.

When any of the following model sizes...

UNI1201 UNI1202 UNI1203 UNI1204 UNI1205

...are used on an conditions described above exists, OR the is rated at more than ten times the current rating of the Drive, it is strongly recommended that a line reactor of 2% reactance is included between the

AC supply and the Drive. Model sizes 1205 and larger

have an internal require a line reactor except under extreme supply conditions.

Caution

DC Drives having no or ineffective line

reactors connected to the supply

to the supply. When any of these motors are started, a dip is produced in excess of 20% of the actual

AC supply where one of the

DC-bus choke; these models do not

RFI filters (for EMC purpose) do not give adequate protection against these conditions.

AC supply voltage

AC supply

Continuous: Not less than the continuous current rating of the Drive

Repetitive peak: Not less than twice the continuous current of the Drive.

Motor requirements

Number of phases: 3 Voltage: 200V ~ 240V ±10%

Temperature, humidity and cooling method

Ambient temperature range: 0°C to 50°C (32°F to 122°F). Output current de-rating must be applied at ambient temperatures between 40°C (104°F) and 50°C (122°F) (absolute maximum).

Minimum temperature at power-up: –10°C (14°F)

Cooling method: Forced convection

Maximum humidity: 95% non-condensing at 40°C (104°F)

Storage temperature range: –40°C to 50°C (–40°F to 122°F)

Maximum storage time: After each 12 months, the capacitors will need re-forming; refer to the supplier of the Drive.

Altitude

Altitude range: 0 to 4000m (13000 ft), subject to the following conditions:

1000m to 4000m (3300 ft to 13000 ft) above sea level: De-rate the maximum output current from the specified figure by 1% per 100m (330 ft)

Vibration

Tested to ≤0.5g as specified in IEC 68–2–34

For three-phase Drives, three individual reactors, or a single three-phase reactor should be used. Each Drive must have its own reactor(s).

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Data C-3

Ingress protection

EN50081-1

radiated

Immunity

Gland plate(s) not fitted: IP00

Gland plate(s) fitted; cable glands not fitted: IP10

Gland plate(s) fitted; cable-glands fitted: IP40, NEMA 1

Overall dimensions

H Height including surface mounting

brackets W Width D Projection forward of panel when

surface mounted F Projection forward of panel when

through-panel mounted R Projection rear of panel when

through-panel mounted

Dimension Model size

123

366mm

95mm

/4 in

200mm

/8 in

120mm

/4 in

80mm

/8 in

366mm

190mm

7 1/2 in

200 mm

7 7/8 in

120mm

4 1/4 in 80mm

3 1/8 in

368mm

/4 in

375mm

14 3/4 in

260mm

10 1/

120mm

4 1/4 in

140mm

5 1/2 in

Weights

Compliance with immunity standards does not depend on installation details. Drives meet EN50082–2 (generic immunity standard for the industrial environment) and the following specifications from the IEC61000–4 group (derived from IEC801):

Part 2, Electrostatic discharge: Level 3 Part 3, Radio frequency field: Level 3 Part 4 Transient burst:

Level 4 at the control terminals Level 3 at the power terminals

Part 5, Surge (at the

AC supply terminals)

(as specified by EN50082–2 informative annex):

Level 4 line-to-ground Level 3 line-to-line

Part 6, Conducted radio frequency: Level 3

Emission

Compliance with emission standards depends on rigorous adherence to the installation guidelines, including the use of the specified RFI filter in the supply circuit. Compliance also depends on the PWM switching frequency used in the output stage of the Drive, and the length of the motor cable. For full details, refer to the Unidrive EMC Data Sheet which can be obtained from a Drive Centre or distributor listed at the end of the User Guide.

When installed according to the instructions the Drive can meet the emission requirements of CENELEC generic emission standards, as follows:

Model size kg lb

1 2 3

4 8.8 817

22 49

Electromagnetic compatibility (EMC)

This is a summary of the EMC performance of the Drive. For full details, refer to the Unidrive LV EMC Data Sheet which can be obtained from a Drive Centre or distributor listed at the end of the User Guide.

C-4 Data

Unidrive

size

EN50081-1 conducted

1 Restricted

motor cable length

2 Restricted

motor cable length

3No

Unidrive LV model sizes 1 to 3 Installation Guide

EN50081-2 conducted

Yes Yes

Issue code: uliu1

EN50081-2

radiated

The optional RFI filter specified below must be used:

Drive model Use RFI filter...

Type Part number

UNI 1201 UNI 1202 UNI 1203 UNI 1204 UNI 1205

UNI 2201 UNI 2202 UNI 2203

UNI 3201 UNI 3202 UNI 3203 UNI 3204

A A A A A

B B B

C C D D

4200–0010 4200–0010 4200–0010 4200–0010 4200–0010

4200–0027 4200–0027 4200–0027

4200–1051 4200–1051 4200–1071 4200–1071

Power Drive Systems standard EN61800–3

The Drive meets the immunity requirements of EN61800–3 irrespective of the environment in which it is operating.

The emission requirements of this standard are also met depending on the environment category, as shown in the table below.

EN61800–3 defines the following:

• The first environment as one that

includes domestic premises. It also includes establishments directly connected without intermediate transformers to a low-voltage power supply network which supplies buildings used for domestic purposes.

• The second environment is one that

includes all establishments other than those directly connected to a low-voltage power supply network which supplies buildings used for domestic purposes.

• Restricted distribution is defined as a

mode of sales distribution in which the manufacturer restricts the supply of equipment to suppliers, customers or users who separately or jointly have technical competence in the EMC requirements of the application of Drives.

Note

If a Power Drive System is included as part of equipment covered by a separate EMC product standard, the EMC standard for the complete equipment applies.

Power Drive Systems standard EN61800–3

Model size Environment category

First environment Second environment

UNI 1201 ~ UNI 1205 (Rated input current

of Drive <25A) UNI 2201, UNI 2202 (Rated input current

of Drive <25A) UNI 2203 (Rated input current

of Drive >25A) UNI 3201 ~ UNI 3204 (Rated input current

of Drive >25A)

Restricted distribution only: specified RFI filter required No RFI filter required *

Specified RFI filter required No RFI filter required *

RFI filter(s) recommended where sensitive electronic systems are operating nearby.

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Data C-5

Frequencies and speed

Max.

continuous

current

10 A

27 A

50 A

75 A

Type

Maximum

ambient

temperature at

rated current

50 °C (122°F)

Power

dissipation at

rated current

25 W

40 W

60 W

100 W

PWM switching frequency

Unidrive LV and Unidrive VTC LV: 3kHz nominal (selectable up to 12kHz)

Unidrive LFT LV: 9kHz nominal (selectable from 3kHz to 12kHz)

Maximum output frequency (open-loop): 2000Hz Maximum speed (closed-loop): 30 000

RPM

Speed regulation: (open-loop): 1 ~ 2% (closed-loop): 0.01%

Speed control range: (open-loop): >50:1 (closed-loop): >1000:1

Starts per hour

C.2 Optional RFI filters

Ratings

Type Part number

B C D

4200–0010 4200–0027 4200–1051 4200–1071

Maximum current overload: 150% of rated current for 1 minute in a 10 minute period.

Voltage (phase-to-phase and phase-to-ground): 480V +10%

Ingress

protection

IP20

IP20 IP 00 IP 00

By electronic control: unlimited

By interrupting the

AC supply:

model sizes 1 and 2: ≤20 model sizes 3 and 4: ≤10

Accuracy and resolution

The following data applies to the Drive only; it does not include the performance of the source of the control signals.

Open-loop frequency resolution...

Preset frequency reference: 0.1Hz Precision frequency reference: 0.001Hz

Open-loop frequency accuracy...

Preset frequency reference: 0.03Hz or 0.01% of the reference, whichever is the larger value

Precision frequency reference: 0.0001Hz or

0.01% of the reference, whichever is the larger value

Closed-loop speed resolution Unidrive LV and Unidrive LFT LV only...

Preset speed reference: 1 Precision speed reference: 0.01 RPM Analog input 1: 0 RPM * * The speed-loop algorithm ensures that the

steady-state speed can change by infinitely small amounts in response to changes in the reference from these inputs.

Closed-loop speed accuracy Unidrive LV and Unidrive LFT LV only...

Preset or precision speed reference:

0.00016

RPM or 0.01% of the reference,

whichever is the larger value

RPM

AC supply frequency: 48 to 62 Hz

Temperature

Part number

4200–0010 4200–0027 4200–1051 4200–1071

Case

temperature

rise at rated

current

<30°C (86°F) <40°C (104°F) <40°C (104°F) <40°C (104°F)

Power dissipation

Type Part number

B C D

4200–0010 4200–0027 4200–1051 4200–1071

Ground leakage current

Ground-leakage current when the AC supply is 400V at 50Hz is as follows:

Condition

Balanced supply phase-tophase and phase-to-ground

One phase disconnected 25mA 35mA 210mA

For other AC supply voltages and frequencies, scale the values of leakage current proportionally.

3.4mA 4.4mA 33mA

C to D

C-6 Data

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

Discharge resistors

A and B: 330KΩ in a star network between phases, with the star point connected by a 1MΩ resistor to ground.

C to D: 10MΩ between each phase and ground.

The discharge resistors are fitted internally.

Overall dimensions

Type Part Dimension

number

4200–0010 396mm

4200–0027 406mm

4200–1051 330mm

4200–1071 330mm

HWD

16 in

13 in

/16 in

50mm

115/16 in

75mm

190mm

/2 in

190mm

/2 in

114.5mm 41/2 in

114.5mm

41/2 in

145mm

511/16 in

145mm

511/16 in

Weights

Type Part number kg lb

B C D

4200–0010 2 5

4200–0027 2.7 6

4200–1051 7.4 16 4200–1071 8 18

Unidrive LV model sizes 1 to 3 Installation Guide Issue code: uliu1

Data C-7

C-8 Data

Unidrive LV model sizes 1 to 3 Installation Guide

Issue code: uliu1

Control Techniques UNI1203, UNI1204, UNI1205, UNI2201, UNI2202 Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual