r-tec 220-K Control Unit

Documented 220-K scope

The local v.2 manual names r-tec 220-K as a contactor-based control unit. Its page 2 table gives 380 VAC 50/60 Hz input, 380 VAC motor output, 2,200 VA output power and a 10 A maximum operating current. These are values from the 220-K manual, not proof of universal pairing with every motorised door.

Wiring and safety boundary

Page 3 diagrams opening and closing contactors, open/close/start commands, an NC stop input and a photocell input. A red button on the cover and an NC stop terminal do not establish a certified emergency-stop chain or the safety performance of every installation. The manual also does not specify compact dimensions, a wall-mounted enclosure or a mandatory HPVC pairing.

Qualified installers should confirm the three-phase supply, motor, limits and protection devices against the exact installation wiring scheme.

Additional entries in the v.2 guide give 12–24 VAC/DC for photocell supply, 230 VAC, 40 W for the warning-light output and −20 to +45 °C as the operating temperature. Page 4 illustrates pneumatic-edge and safety-photocell connections; page 3 identifies a warning-light output and receiver-card position. These show documented interfaces, not that all accessories ship with every 220-K. The guide calls for a 10 A three-phase fuse upstream and separation of power cables from limit, encoder and control wiring. Isolate supply before making connections.

Automatic closing and fault review

The guide calls T1 inactive and assigns T2 to the open hold time before automatic closing, describing a 5–90 s range. If the photocell detects an object during closing, the motor stops and reverses towards opening; detection before closing restarts the waiting period. Test this behavior with the safety devices actually installed. It does not replace the safety assessment of the complete door.

When diagnosing a fault, compare the photocell circuit, unused normally closed contacts and limit connections with the model diagram. Instructions concerning reversed motor direction are not worded identically across all pages. A generic phase-swap procedure would therefore be misleading; inspect the actual board revision and delivered wiring diagram before any three-phase intervention.