IMO HD2-NK1-4 AC Variable Speed Inverter Drives User Guide

IMO HD2-NK1-4 AC Variable Speed Inverter Drives User Guide

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This guide briefly describes the external wiring, terminals, keypads, quick running, common function parameter settings, and common faults and solutions of IMO variable-frequency inverter drives (VFD) including XKL, SD1, HD2, HD2-UL and HD2IP. This document can be used as a guide, but please refer to the specific User Manual for the drive you are using.

Visit www.imopc.com for more information (including energy efficiency data) and source download.

Warning

• This guide only provides the basic installation and commissioning information. Failure to comply with the safety instructions and installation and commissioning instructions in the relevant documentation may result in accidents such as equipment damage, personal injury, or even death.
• Only trained and qualified professionals are allowed to carry out related operations.

Danger

• Do not perform any operations including wiring, inspection, or component replacement when power supply is applied. Before performing these operations, ensure all the input power supplies have been disconnected, and wait for at least the time designated on the inverter or until the DC bus voltage is less than 36V.

1. External Wiring

2. Terminals

Power Terminals

Control Circuit Terminals

Note:

• n is a neutral number.
• The terminals of different series may be different. For detailed terminal wiring, see the User Manual of the product you have.

3. Wiring Protection

3.1 Protecting the inverter and input power cable in short circuit
Protect the inverter and input power cable during short-circuit to avoid thermal overload.
Carry out protective measures according to the following requirements.

Note: Select the fuse according to operation manual. During short- circuit, the fuse will protect input power cables to avoid damage to the inverter; when internal short-circuit occurred to the inverter, it can protect neighbouring equipment from being damaged.

3.1.1 Protecting the motor and motor cable in short circuit
If the motor cable is selected based on rated inverter current, the inverter will be able to protect the motor cable and motor during short circuit without other protective devices.

If the inverter is connected to multiple motors, it is a must to use a separated thermal overload switch or breaker to protect the cable and motor, which may require the fuse
to cut off the short circuit current.

3.1.2 Protecting the motor and preventing thermal overload
According to the requirements, the motor must be protected to prevent thermal overload. Once overload is detected, you must cut off the current. The inverter is equipped with motor thermal overload protection function, which will block output and cut off the current (if necessary) to protect the motor.

4. Keypad

The keypad may vary depending on the product. Some products may support optional LCD keypads.

5. Quick Running

5.1 Check before power-on

Ensure the all terminals have been securely connected
Ensure that the motor power matches the inverter power

5.2 Operating upon first power-on
After confirming the wiring and power are correct, close the air switch of the AC power at the inverter input side to power on the inverter. Using a LED keypad for example, the keypad displays 8.8.8.8.8. upon power-on and then the set frequency (50.00 in the example), indicating the inverter is initialized and ready to run. (For details about other types of keypad, see the full version of corresponding product user manual.)

The quick start-up flowchart is as follows:

6. Common Functions Parameter Setup

The following briefly describes only some common function parameters and typical values.

7. Common Faults and Solutions

Note: Our fault code scheme is being upgraded. Some products use the old scheme and the others use the new one, which are listed in “Fault code display”.

Appendix A – Optional Peripheral Accessories

A.1 Power Supply

Ensure that the voltage class of the inverter is consistent with that of the grid

A.2 Cables
The sizes of the input power cable, and motor cables must meet the local regulation.

• The input power cables, and motor cables must be able to carry the corresponding load currents.
• The maximum temperature margin of the motor cables in continuous operation cannot be lower than 70°C.
• The conductivity of the PE grounding conductor is the same as that of the phase conductor, that is, the cross-sectional areas are the same.
  Check the insulation conditions of the input power cable of an inverter according to the local regulations before connecting it.

Table A 1 Cable Specifications (SD1 Models only)

Note:

• Cables of the sizes recommended for the main circuit can be used in scenarios where the ambient temperature is lower than 40°C, the wiring distance is shorter than 100 m, and the current is the rated current.
• Terminals P1, (+), PB and (-) are used to connect to the DC reactor options and parts.

Table A 2 Cable Specifications (HD2-UL Models only)

Note:

• It is appropriate to use the recommended cable size at 40°C and rated current. The wiring distance cannot be more than 100m.
• Terminals P1, (+), PB and (-) connect the DC reactor options and parts.
• Use 75˚C CU wire only for field input and output wire.

Table A 3 Cable Specifications (HD2 Models only)

A.3 Fuse, Breaker and Electromagnetic Contactor
You need to add a fuse to prevent overload.
You need to configure a manually manipulated moulded case circuit breaker (MCCB) between the AC power supply and inverter. The breaker must be locked in the open state to facilitate installation and inspection. The capacity of the breaker needs to be 1.5 to 2 times the rated current of the inverter.

  According to the working principle and structure of breakers, if the manufacturer’s regulation is not followed, hot ionized gases may escape from the breaker enclosure when a short-circuit occurs. To ensure safe use, exercise extra caution when installing and placing the breaker. Follow the manufacturer’s instructions.

To ensure safety, you can configure an electromagnetic contactor on the input side to control the switch-on and switch-off of the main circuit power, so that the input power supply of the inverter can be effectively cut off when a system fault occurs.

Table A 1 Fuse, breaker, and electromagnetic contactor (SD1 models only)

Table A 3 Fuse specifications (HD2 models only)

Table A 2 Fuse specifications (HD2-UL models only)

Appendix B – Energy Efficiency Data

Table B 1 Power loss and IE class (SD1 Models Only)

Table B 2 Power loss and IE class (HD2-UL Models Only)

Table B 3 Power loss and IE class (HD2 Models Only)

Table B 4 Rated specifications (SD1 Models Only)

Table B 5 Rated specifications (HD2-UL Models Only)

Table B 6 Rated specifications (HD2 Models Only)

Appendix C – User Manuals

IMO Worldwide Offices

IMO Precision Controls Limited
The Interchange
Frobisher Way
Hatfield, Herts AL10 9TG
United Kingdom
Tel: 01707 414 444
Email: imo@imopc.com
Web: www.imopc.com

IMO Jeambrun Automation SAS
Parc de la Broye
14 rue du Chaufour
59710 ENNEVELIN
France
Tel: 0800 912 712 (no gratuit)
Email: imo-fr@imopc.com
Web: www.imojeambrun.fr

IMO Automazione
Via Belfiore 10,
50144 Firenze (FI)
Italia
Tel: 800 930 872 (toll free)
Email: imo-it@imopc.com
Web: www.imopc.it

IMO Canada
1B-701 Rossland Road East
Suite #608
Whitby, Ontario L1N 9K3
Canada
Tel: 416 639 0709
Email: sales-ca@imopc.com
Web: www.imopc.com

IMO Automation LLC
Suite 112,
5910 Shiloh Road East
Alpharetta, GA 30005
USA
Tel: 404 476 8810
Email: sales-na@imopc.com
Web: www.imoautomation.com

IMO South Africa (Pty) Ltd
Unit 5 Osdam Business Park
Columbus Crescent, Rivergate
Parklands, Cape Town 7441
South Africa
Tel: 021 551 1787
Fax: 021 555 0676
Email: info@imopc.co.za
Web: www.imopc.co.za

IMO Pacific Pty Ltd
Unit 9, Dillington Pass
Landsdale
Perth WA 6065
Australia
Tel: 1300 34 21 31
Email: sales@imopacific.com.au
Web: www.imopacific.com.au

Errors and omissions excepted. Subject to change without notice. Information correct at time of print.

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References

• IMO JEAMBRUN AUTOMATION - Accueil
• Welcome to IMO Precision Controls
• Welcome to IMO Precision Controls
• Welcome to IMO Precision Controls
• IMO - Website Down For Maintenance

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