r-tec KING 2500 (380 V Sliding)

Overview

On the 380 V three-phase sliding line, KING 2500 represents the medium-upper capacity. At a 2,500 kg class door weight it serves factory main entrances, organised industrial zone (OSB) facilities, logistics terminals and warehouse complexes. Its three-phase direct-drive structure (NO inverter drive) keeps it simple and robust — instead of relying on an FU inverter on a 220 V single-phase installation, it drives heavy doors straight from the 380 V mains.

KING 2500 vs KING 3000 FU vs KING 4000

	KING 3000 FU (220 V)	KING 2500 (380 V)	KING 4000 (380 V)
Mains	220 V single-phase	380 V three-phase	380 V three-phase
Drive type	Inverter (FU)	Direct-drive	Direct-drive
Max. door	2,000+ kg industrial profile	2,500 kg	4,000 kg
Soft start	Available	None	None
Site complexity	Medium	Low	Low
Profile	Larger (inverter)	Compact	Compact

→ If 380 V three-phase is available at the facility, KING 2500/4000 direct-drive is always preferred. If on a 220 V single-phase installation, KING 3000 FU + FU inverter is mandatory.

Together with the I-380 control unit

KING 2500 is optimised to operate with r-tec’s I-380 industrial control unit (see r-tec I-380 Three-Phase Control Unit). Important features:

• Phase sequence control — On wrong R-S-T sequence the motor does not reverse, the board stops and gives a LED warning.
• Low-voltage protection — In < 310 V conditions the board stops (motor winding protection).
• Current protection trimpot — 0-100% adjustment according to site; the system cuts off on overload.
• Separate internal fuse for each phase — Protection against mains-sourced overcurrent.

Target projects

• Factory main entrance gate (heavy load vehicle traffic)
• Organised industrial zone (OSB) facility entrance
• Logistics terminal vehicle entry control point
• Port + free trade zone warehouse complex entrance
• Automotive factory supply gate

Field discipline

• Three-phase mains check — Before installation, the 3 × R-S-T + N + PE connection in the facility’s fuse panel must be checked. On wrong phase sequence the I-380 board stops; swapping two phases in the field is sufficient.
• Current protection calibration — The I-380 trimpot must be calibrated under load; in site trial it is reduced until the motor stops, then slightly increased.
• Rail and wheel quality — A 2,500 kg door creates heavy momentum; a steel rail 6 mm+ thick + solid ground connection are mandatory.
• Limit switch buffer — 15-20 cm is recommended (the braking distance grows on a heavy door).
• Follow the mechanical balance and gear reset procedure on heavy doors.

Model notes

Follow the mechanical balance and gear reset procedure on heavy doors. When the correct KING 2500 document is published, the contents under public/pdfs/technical/r-tec/ should be updated; the current technical PDF file may share content with the KING 4000 document — verify the physical model and its label.