r-tec KING 4000 (380 V Sliding)

Overview

KING 4000 sits at the ceiling of the range — the highest-capacity member of the r-tec sliding motor portfolio. At a 4,000 kg class door weight it brings direct-drive 380 V three-phase power to factory supply gates, port terminals, OSB heavy industry facilities and free trade zone warehouse complexes. It shares the same control unit (I-380) as KING 2500, and its motor winding capacity produces the moment needed to move the 4,000 kg door from a standstill.

KING 4000 vs KING 2500

	KING 2500	KING 4000
Max. door weight	2,500 kg	4,000 kg
Mains	380 V three-phase	380 V three-phase
Drive type	Direct-drive	Direct-drive
Control board	I-380	I-380
Market segment	Factory medium facility	Heavy industry / port

→ For doors between 2,500 – 4,000 kg, KING 4000 offers a long-life margin; at the 2,000-2,500 kg limit, KING 2500 is straightforward.

Target projects

• Port terminal container area entry-exit gates
• Automotive factory main supply gate (truck traffic)
• Steel production facility heavy vehicle entrance
• Free trade zone warehouse complex main entrance
• Mining / construction site entry control points

Together with the I-380 control unit

The I-380 three-phase control board is mandatory for KING 4000. In 380 V three-phase direct-drive driving:

• If the phase sequence is wrong, the motor reverses — I-380 automatically stops.
• The board shuts down in low-voltage (< 310 V) conditions.
• Overcurrent protection is calibrated to the site via trimpot.
• Programmable operating time (2.5 – 90 s) — used on motors with their own limit switch.

KING 4000; because it is a heavy motor, an external limit switch is mandatory — programmable mode is generally not used.

Field discipline

• Three-phase mains capacity — KING 4000 has a large draw current; there must be at least a 32 A three-phase output in the facility’s fuse panel.
• Current protection calibration — The I-380 trimpot is adjusted with the site trial under load; reduced until the motor stops, then slightly increased.
• Rail + ground quality — A 4,000 kg door creates a large load at the site connection; concrete ground + anchor thickness and solidity must be checked. On thin/weak ground the wheel leaves traces, the rail deforms.
• Limit switch buffer — 20-25 cm is recommended (the softening distance is large on a 4,000 kg door).
• Periodic maintenance — Every 6 months 1 rail + wheel + reducer + earthing test (heavy industry standard).
• Check for mechanical jamming before high clutch adjustment.

Model notes

Check for mechanical jamming before high clutch adjustment. KING 4000 is offered from our dealers at the quotation stage after a site survey; mechanical engineering support is mandatory in heavy industrial door projects (motor + door + rail + control combination is optimised according to the site).