TU847Z | ABB Module Termination Unit (MTU)

Product Overview

The ABB TU847Z (3BSE022462R1) is a G3-compliant redundant Module Termination Unit (MTU) designed for use with CI840/CI840A PROFIBUS DP-V1 communication interfaces. It supports redundant communication module configurations and includes integrated power distribution, station address switches, and service ports for simplified commissioning.

Key Specifications

• Manufacturer: ABB
• Part Number: TU847Z (3BSE022462R1)
• Product Type: Redundant Module Termination Unit
• System: S800 I/O / System 800xA
• Communication Protocol: PROFIBUS DP-V1
• Compatibility: CI840 / CI840A communication interfaces
• Power Input: 24 V DC (19.2–30 V)
• ModuleBus Distribution: Max 5 V / 1.5 A, 24 V / 1.5 A
• Connectors: DSUB9 (PROFIBUS), RJ45 (Service Ports)
• Station Address: Rotary switches 0–99
• Mechanical Keying: 36 configuration options
• Mounting: Latching DIN rail with secure grounding
• Wire Size: 0.25–2.5 mm² (24–14 AWG)
• Torque: 0.5–0.6 Nm
• Insulation Voltage: 50 V rated
• Dielectric Test: 500 V AC
• Operating Temperature: 0 to +55°C
• Storage Temperature: -40 to +70°C
• Humidity: 5–95% non-condensing
• Certifications: CE, UL, cULus, ATEX, IECEx, ABS, BV, DNV-GL, LR
• Protection Rating: IP20
• Dimensions: 124 × 186 × 47 mm (W×H×D)
• Weight: 0.5 kg

Applications

• Redundant PROFIBUS DP-V1 I/O stations
• S800 I/O cluster termination
• CI840/CI840A redundant mounting
• G3 harsh environment applications

FAQ

Q: What is the difference between TU847 and TU847Z?
A: The "Z" suffix indicates G3 compliance for harsh environments (corrosive gas resistance per ISA-S71.04).

Q: Can TU847Z be used for non-redundant I/O?
A: Yes, TU847Z supports both redundant and non-redundant I/O configurations.

Q: How is the PROFIBUS station address set?
A: Address is set via rotary switches on the TU847Z in the range 0–99.

Installation Guide

1. Mount TU847Z on DIN rail using the latching mechanism.
2. Set PROFIBUS station address using the rotary switches.
3. Connect 24 V DC power to the power terminals.
4. Install CI840/CI840A modules onto the MTU.
5. Connect PROFIBUS cable to the DSUB9 connector.
6. Use RJ45 service ports for commissioning and diagnostics.
7. Connect ModuleBus optical port via TB842 if needed.

Selection Tips

• Order TU847Z for G3-compliant harsh environment installations.
• Verify CI840/CI840A firmware compatibility.
• For standard environments, TU847 (non-Z) may be sufficient.
• Ensure proper DIN rail grounding for EMC compliance.