Warnings

Electrical installation should always be carried out in a clean environment. Always ensure oxide-free surfaces for cable connections. Clean or polish surfaces if necessary.

To connect the U-V-W phases of the motor to the respective contacts of the control inverter, when present, it is necessary to open the terminal box cover and run the connecting cable through the provisions on the box. In the case of motors with cable output without a terminal box, connect U-V-W phases directly to the inverter.

<aside> <img src="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/b3311423-cf22-4741-b1ab-b136c830fb23/general-warning-sign_hires.png" alt="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/b3311423-cf22-4741-b1ab-b136c830fb23/general-warning-sign_hires.png" width="40px" /> Dirty or corroded connections may cause malfunction!

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<aside> <img src="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/8bf5b910-cfcb-45db-8ada-6ef2ddffd4dd/general-warning-sign_hires.png" alt="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/8bf5b910-cfcb-45db-8ada-6ef2ddffd4dd/general-warning-sign_hires.png" width="40px" /> The connection must be made by an expert in compliance with current safety regulations. All installation activities must be carried out without power supply voltage to avoid accidental start-up of the machine.

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<aside> <img src="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/05166e21-7432-43ec-bc68-1840ecc3165a/electricity-hazard_hires.png" alt="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/05166e21-7432-43ec-bc68-1840ecc3165a/electricity-hazard_hires.png" width="40px" /> Before opening the terminal box, make sure the motor shaft is not moving. A rotation of the shaft induces a tension proportional to the speed of the motor shaft.

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<aside> <img src="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/f68546fc-20af-485b-ba58-84179d70fde6/general-warning-sign_hires.png" alt="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/f68546fc-20af-485b-ba58-84179d70fde6/general-warning-sign_hires.png" width="40px" /> The motors covered in the following manual cannot be operated while connected directly to the power supply, which is why the use of an inverter is necessary.

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<aside> <img src="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/1889d7bf-6ea0-403c-8ff3-117e49cbf624/general-warning-sign_hires.png" alt="https://s3-us-west-2.amazonaws.com/secure.notion-static.com/1889d7bf-6ea0-403c-8ff3-117e49cbf624/general-warning-sign_hires.png" width="40px" /> Power cables and their respective cross sections should be selected considering the rated current and operating conditions (e.g., ambient temperature, type of cable laying and installation, etc.).

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Power Connections

By connecting the phases of the U-V-W motor (terminal board or direct wires) with the corresponding U-V-W terminals of the inverter and providing a positive speed command, the motor shaft rotates in accordance with the respective Datasheet.

Once connections have been made, check the following:

• Suitability of motor/inverter supply voltage.
• Absence of loose parts (washers, nuts, etc.) inside the terminal block.
• The presence of any gaskets, their integrity, and correct positioning are suitable to ensure the degree of protection indicated on the nameplate.

Below are instructions for the electrical connection

1. Unscrew the No. 4 screws on the cover

2. Remove the cover from the terminal block

3. Unscrew No. 3 screws, remove No. 3 brass washers DIN125/A and No. 3 Grower washers DIN127/B

4. Introduce the Connecting Cables through the Cable Grommets provided

4a. Cable grommets option- Unscrew and then feed the connecting cables through the cable glands

4b. -Cable Gland Option - Screw on the cable glands to ensure IP sealing.

5. Use N°3 eyelet terminals, according to the required dimensions for fixing to the terminal board

6. Secure the cables to the terminal block by tightening the screws and their washers with torque, according to the table.

7. Secure the cables to the terminal block by tightening the screws and their washers with torque, according to the table.

8. Secure the cover with No. 4 screws using tightening torque of 1.2 Nm

Below is an overview of the standard cable glands and grommets used.

Follow these directions when verifying the size of the cable used to ensure IP sealing.

| CABLE GLANDS | EXTERNAL WIRING Ø [mm] PLASTIC CABLE GLANDS | EXTERNAL WIRING Ø [mm] NICKEL-PLATED BRASS CABLE GLANDS | | --- | --- | --- | | M12 | 3,5 - 7 | 3 - 6.5 | | M16 | 5 - 10 | 5 - 10 | | M25 | 10 – 17 | 13 - 18 |

Thermal Sensor

The thermal sensor, when present, must be connected to a dedicated input of the inverter for proper management of the motor temperature or to a dedicated trip device that can handle any anomalies.

PTY 84-130 sensor resistance characteristics (test current 2 mA)

<aside> <img src="https://prod-files-secure.s3.us-west-2.amazonaws.com/f86d0641-b448-410d-aea9-72e3bcb1af61/5603190e-1cb6-4189-951d-d6a71f0ba138/Immagine_2023-10-05_102801.png" alt="https://prod-files-secure.s3.us-west-2.amazonaws.com/f86d0641-b448-410d-aea9-72e3bcb1af61/5603190e-1cb6-4189-951d-d6a71f0ba138/Immagine_2023-10-05_102801.png" width="40px" /> Manipulation and removal of the component shown in the picture below (THERMAL PROBE CABLE PTY) for any reason, entails an high risk for the integrity and functioning of the motor and of the manipulated/removed component, that would automatically invalidate the product warranty.

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E-COMER Srl personnel are at your complete disposal if you have any needs in connection with the assembly, use and operation of the motors they produce.

Encoder

Various speed transducer solutions can be mounted on the motors covered in this manual. Connection diagrams are provided with the motor depending on the speed sensor solution fitted. Contact e-comer Srl technical department for more information than what is in the engine packaging.