3BSE021447R1 MTU Specification
| Manufacturer | ABB | Article number | 3BSE021447R1 |
| Connection | Terminal block | Channels | 8 |
| Voltage | 50 V | Mounting | Vertical |
| Mounting detail | 55 º (131 °F) | Use with I/O | AI845, AI880, AI880A and DP840 |
| Process connections | 40 up to 8 I/O channels (2 terminals per channel) 4 Process power 20 Process power (0 V) | Maximum current per I/O channel | 2 A |
| Maximum current process connection | 5 A | Dielectric test voltage | 500 V a.c. |
| Temperature, Operating | 0 to +55 °C (+32 to +131 °F), approvals are issued for +5 to +55 °C | Temperature, Storage | -40 to +70 °C (-40 to +158 °F) |
| Width | 131 mm (5.16”) including connector, 124 mm (4.88”) edge to edge installed | Depth | 64 mm (2.52”) including terminals |
| Height | 186.5 mm (7.34”) including locking device | Weight | 0.6 kg (1.3 lbs.) |
3BSE021447R1 MTU Features
TU845 MTU Complete installation of I/O modules using 2-wire connections and field power distribution.
TU845 MTU Up to 8 channels of field signals and process power connections.
TU845 MTU Connections to two ModuleBuses and I/O modules.
TU845 MTU Mechanical keying prevents insertion of the wrong I/Omodule.
TU845 MTU Latching device to DIN rail for grounding.
TU845 MTU DIN rail mounting.
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3BSE021447R1 MTU Application
3BSE021447R1 MTU Redundant I/O Deployment: Purpose-built to house two identical S800 I/O modules simultaneously, providing hardware-level signal redundancy for continuous process availability.
TU845 MTU ModuleBus Communication Relay: TU845 MTU serves as the localized data highway backbone, routing dual-channel communication from the optical/electrical ModuleBus cluster directly to active and standby I/O modules.
TU845 MTU Field-to-Control Marshalling: TU845 MTU acts as the physical terminal hub, bridging vulnerable field instrument wiring directly into the digital control layer without requiring separate intermediate marshalling panels.
TU845 MTU Analog Loop Conversion: TU845 MTU utilize the companion TY801 external shunt sticks, the unit is widely applied in applications requiring rapid per-channel switching between 4–20 mA current loops and 0–10 V voltage signals without rewriting baseline hardware schematics.
TU845 MTU High-Integrity (SIL) Monitoring: TU845 MTU is deployed alongside AI880 / AI880A modules to handle safety-critical signals up to SIL3 compliance, protecting equipment in emergency shutdown (ESD) applications.
TU845 MTU High-Speed Pulse Counting: TU845 MTU is paired with DP840 modules for rotary encoder monitoring, turbine speed calculations, and accurate liquid/gas flowmeter pulse accumulation.
TU845 MTU Oil & Gas (Upstream & Downstream): Emergency shutdown systems (ESD), fire and gas (F&G) logic, and offshore platform continuous telemetry.
TU845 MTU Chemical & Petrochemical Processing: Critical temperature loop monitoring, hazardous area reactor pressure controls, and automated distillation column safety overrides.
TU845 MTU Power Generation & Utilities: Boiler water level controls, turbine vibration analysis, and high-reliability generator field monitoring.
TU845 MTU Water & Wastewater Infrastructure: Distributed pump station metrics, flow rate calculation networks, and chemical dosing loop validation.
3BSE021447R1 MTU Images
3BSE021447R1 MTU(TU845 MTU)
3BSE021447R1 MTU(TU845 MTU)
3BSE021447R1 MTU
3BSE021447R1 MTU
3BSE021447R1 MTU FAQ
Q: What is the primary function of the TU845 3BSE021447R1 in an automation system?
A: The TU845 3BSE021447R1(3BSE021447R1 MTU) functions as a dual-channel Module Termination Unit (MTU) designed to provide physical field wiring connection points and dual ModuleBus routing for redundant S800 I/O modules.
A: The TU845 3BSE021447R1(3BSE021447R1 MTU) functions as a dual-channel Module Termination Unit (MTU) designed to provide physical field wiring connection points and dual ModuleBus routing for redundant S800 I/O modules.
Q: Which specific ABB S800 I/O modules can be mounted onto the TU845 3BSE021447R1?
A: The TU845 3BSE021447R1(TU845) is engineered to host redundant analog input modules AI845, high-integrity SIL3 analog input modules AI880 and AI880A, as well as the DP840 pulse counter module.
A: The TU845 3BSE021447R1(TU845) is engineered to host redundant analog input modules AI845, high-integrity SIL3 analog input modules AI880 and AI880A, as well as the DP840 pulse counter module.
Q: How does the TU845 3BSE021447R1 prevent field operators from inserting an incorrect module type into a live slot?
A: The TU845 3BSE021447R1 incorporates an internal mechanical keying system consisting of two coding keys per slot with 6 index positions each, establishing up to 36 unique combination safety locks.
A: The TU845 3BSE021447R1 incorporates an internal mechanical keying system consisting of two coding keys per slot with 6 index positions each, establishing up to 36 unique combination safety locks.
Q: Can the TU845 3BSE021447R1 handle high-voltage application wiring directly?
A: No, the TU845 3BSE021447R1 is rated for low-voltage instrumentation signals, specifying a maximum continuous operating voltage limit of 50 V and a dielectric test rating of 500 V a.c.
A: No, the TU845 3BSE021447R1 is rated for low-voltage instrumentation signals, specifying a maximum continuous operating voltage limit of 50 V and a dielectric test rating of 500 V a.c.
Q: How is the individual channel signal type changed between voltage and current loops on the TU845 3BSE021447R1?
A: Channel configuration on the TU845 3BSE021447R1 is modified externally on a per-channel basis by inserting or removing specialized TY801 shunt sticks into the dedicated terminal slots.
A: Channel configuration on the TU845 3BSE021447R1 is modified externally on a per-channel basis by inserting or removing specialized TY801 shunt sticks into the dedicated terminal slots.
Q: What are the precise installation physical dimensions required to mount the TU845 3BSE021447R1 in a control cabinet?
A: Cabinet space allocation for the TU845 3BSE021447R1 requires an envelope measuring 186.5 mm in height, 131 mm in total width (124 mm when placed edge-to-edge), and a depth profile of 64 mm.
A: Cabinet space allocation for the TU845 3BSE021447R1 requires an envelope measuring 186.5 mm in height, 131 mm in total width (124 mm when placed edge-to-edge), and a depth profile of 64 mm.
Q: Does the TU845 3BSE021447R1 require manual address configuration when added to a ModuleBus cluster?
A: No, the TU845 3BSE021447R1 features embedded hardware logical tracking that shifts the physical position signal down the line, ensuring automatic unique address assignment to downstream units.
A: No, the TU845 3BSE021447R1 features embedded hardware logical tracking that shifts the physical position signal down the line, ensuring automatic unique address assignment to downstream units.
Q: What range of electrical wire sizes and termination parameters does the TU845 3BSE021447R1 terminal block accept?
A: The TU845 3BSE021447R1 accommodates solid conductors from 0.2 to 4 mm² and stranded cables from 24 to 12 AWG, requiring a 7 mm strip length and a tightening torque of 0.5 to 0.6 Nm.
A: The TU845 3BSE021447R1 accommodates solid conductors from 0.2 to 4 mm² and stranded cables from 24 to 12 AWG, requiring a 7 mm strip length and a tightening torque of 0.5 to 0.6 Nm.
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