Beckhoff KS2791 Bus Terminal

Description

The KS2791 is a Bus Terminal designed for the direct control of 1-phase AC motors. This terminal features a pluggable wiring level and enables precise motor speed or power control using phase or full-wave control techniques. With a resolution of 1% and a rated output capacity of up to 200 VA, the KS2791 provides an efficient solution for integrating AC motor management directly into the Beckhoff Bus Terminal system. It is engineered for industrial reliability with robust electrical isolation and a compact DIN rail-mountable housing.

Features

• Direct motor connection for 1-phase AC motors (230 V AC)
• Supports phase or full-wave control
• High resolution: 1%
• Pluggable wiring level for easy maintenance and installation
• Compact design with integrated status monitoring via process image
• Reliable electrical isolation (500 V K-bus/field voltage)

Applications

• Small AC motor speed control
• Process automation and ventilation systems
• HVAC damper or fan control
• Small-scale mechanical motion applications

Technical Specifications

Installation Guidelines

• Mounting: Install on a 35 mm DIN rail (EN 60715) using the integrated lock mechanism.
• Wiring: Utilize the pluggable wiring level. Connections support solid (s), stranded (st), and ferrule (f) conductors.
• Connection Cross-sections: * Solid/Stranded: 0.08…1.5 mm² (AWG 28…16)
  • With Ferrule: 0.14…1.5 mm² (AWG 26…16)
• Stripping Length: 9…10 mm.
• Safety: Ensure proper grounding of the DIN rail system and verify load requirements do not exceed 0.9 A or 200 VA.
• Environment: Maintain operational humidity below 95% (non-condensing) and adhere to standard industrial EMI/RFI practices.