ABB 3BSE022366R2 TW991 Terminal | Rotary Switch, 2 Pos

ABB 3BSE022366R2 TW991 operation terminal. Rotary switch, 2 positions, IP65, 3 cables. For local control of AC500/AC800M.

Product: ABB 3BSE022366R2 TW991 Operation Terminal

The ABB 3BSE022366R2 (TW991) is a rugged, two-position rotary operation terminal designed for local control and mode selection on AC500 and AC800M controllers. It provides a simple and reliable manual interface in harsh industrial environments, directly mounted on the controller cabinet.

Key Features

• Robust Mechanical Design:​ Built for demanding environments with a high protection rating.

• Simple Operation:​ Two-position rotary switch for clear mode selection (e.g., LOCAL/OFF/REMOTE).

• Direct Mounting:​ Designed to mount directly onto the controller's cabinet door.

• IP65 Protection:​ Sealed against dust and water jets when properly installed.

Technical Specifications

Function & Application

This terminal is a purely mechanical operator. The rotary handle positions are transferred via a mechanical linkage or sensed by an external switch connected through the cable glands. It is typically wired to digital inputs of the connected controller to indicate the selected operating mode.

Typical Applications

• Mode Selection:​ Setting controller operating modes such as MANUAL/AUTO, LOCAL/REMOTE, or RUN/STOP.

• Local Control Stations:​ Providing a simple, dedicated interface for operators on the cabinet door.

• Safety Functions:​ As part of a local control station for enabling maintenance modes (requires appropriate safety circuit design).

Critical Integration Note

• This is a mechanical operator only.​ It does not​ include the internal switching contacts or electronic modules. These must be provided separately (e.g., auxiliary contacts, a separate switch unit) and wired through the terminal's cable glands to the controller's I/O cards.

• Always verify the complete system wiring diagram and ensure the external contacts/switches are rated for the control voltage and current of the connected PLC inputs.

• Installation must ensure the IP65 seal is properly maintained.

Note: Specifications are for product identification and comparison. This is a mechanical interface accessory. For mechanical mounting dimensions, installation instructions, and system wiring examples, consult the official ABB TW991 Hardware Manual or the corresponding AC500/AC800M cabinet design guides.