ABB TU844 Module | Redundant 8-Channel Terminal Unit 3BSE021445R1

ABB TU844 Redundant Terminal Unit

The ABB TU844 is an 8-channel redundant terminal unit for the Advant AC800M and 800xA control systems. It provides reliable signal interfacing with redundant architecture for critical applications.

Product Identification

• Manufacturer: ABB
• Model: TU844
• Article Number: 3BSE021445R1
• Series: Advant AC800M / 800xA
• Type: Redundant Terminal Unit

Electrical Specifications

• Channels: 8 process signal channels
• Voltage Rating: 50 V
• Process Power: 20 V (0V for field signals)
• Terminals per Channel: 2 terminals per channel
• Connection Type: Terminal block
• Mounting: DIN rail with latching device

Environmental Specifications

• Protection Class: IP20 (IEC 60529)
• Pollution Degree: Degree 2 (IEC 60664-1)
• Corrosion Protection: G3 (ISA-S71.04)
• Max Ambient Temperature: 55°C (131°F)
• Operating Temperature: 0 to 55°C (32 to 131°F)
• Storage Temperature: -40 to 70°C (-40 to 158°F)
• Relative Humidity: 5% to 95%, non-condensing

Installation Specifications

• Mounting Angle: Horizontal (55° detail angle)
• Mounting Device: Latching device for DIN rail
• System Compatibility: Advant AC800M and 800xA control systems
• Redundant Design: Ensures high availability for critical processes

Shipping Information

• Includes: 1x ABB TU844 Terminal Unit
• Standard accessories as per factory packaging
• Installation and configuration documentation
• Shipping via FedEx, UPS, or DHL with protective packaging

Frequently Asked Questions (FAQ)

What control systems is this module compatible with?

• The TU844 is specifically designed for ABB's Advant AC800M and 800xA control systems, providing seamless integration with these platforms.

What does the redundant design provide?

• The redundant architecture ensures continuous operation even if one component fails, providing high availability and reliability for critical industrial processes.

What type of signals can this terminal unit handle?

• This unit is designed for process signals up to 50V, with specific provisions for 20V process power and field signals referenced at 0V.