ABB VC/S12.2.2.2 KNX Valve Drive Controller, 12-Channel, Manual Operation, DIN Rail 2CDG110331R0011

The ABB VC/S12.2.2.2 stands out as a 12-channel KNX valve drive controller with per-channel manual operation, enabling direct on-site control without bus commands. It is tailored for electrothermal valve drives in heating and cooling systems, offering both 2-point and PWM control modes. The unit mounts on a DIN rail and occupies 8 modules (144 mm) of space.

Highlights

• 12 semiconductor (triac) outputs for electrothermal valve drives
• Manual operation per channel for commissioning and testing
• Supports 2-point (on/off) and pulse width modulation (PWM) control
• Integrated heating/cooling control, valve protection, frost protection, status feedback, and forced operation
• Short-circuit and overload protection per output
• Powered via KNX bus (21-30 V DC)

In daily use

Install the controller on a DIN rail and connect the valve drives to the screw terminals. Each output can switch 24 V AC/DC or 230 V AC up to 0.8 A, with a total of 8 A across all channels. Use the manual buttons to verify wiring and valve operation before commissioning with ETS4.2 or higher.

Full specifications

• Bus system: KNX
• Number of outputs: 12
• Output type: Semiconductor (Triac)
• Switching voltage: 24 V AC/DC or 230 V AC
• Max. switching current per output: 0.8 A
• Max. total switching current: 8 A
• Mounting: DIN rail (EN 60715)
• Module width: 8 modules (144 mm)
• Protection class: IP20
• Operating temperature: -5 °C to +45 °C
• Connection type: Screw terminals
• ETS version requirement: ETS4.2 or higher

Final note

This controller is a reliable choice for building automation projects requiring precise valve control and manual override.