Overview
The TU844 MTU supports up to 8 I/O channels and 2+2 process voltage connections. Moreover, each channel provides two I/O connections and one ZP connection. Input signals connect through individual shunt sticks, TY801, which enable selection between voltage and current input. Each channel handles a maximum rated voltage of 50 V and a maximum rated current of 2 A.
In addition, the MTU distributes two ModuleBuses—one to each I/O module and another to the next MTU in the network. It also ensures correct addressing of the I/O modules by shifting outgoing position signals to the subsequent MTU, maintaining smooth communication across the system.
For installation, you can mount the MTU on a standard DIN rail, and its mechanical latch securely locks it in place. Furthermore, four mechanical keys—two for each I/O module—allow users to configure the MTU mechanically for different I/O module types. This configuration only affects the physical setup and does not interfere with the MTU’s or I/O module’s functionality. Each key provides six positions, offering a total of 36 possible configurations, which enhances flexibility for various system setups.
Specification
| General info | |
| Article number | 3BSE021445R1 |
| Type | Redundant |
| Connection | Termina block |
| Channels | 8 |
| Voltage | 50V |
| Mounting | Horizontal |
| Mounting detail | 5531F |
| Use with I/o | AI845,AIB80,A18B0A and DP840 |
| Process connections | 40up to8I/O channels (2 terminals per channel) 4Process power |
| Single/redundant I/O | Redundant |
| Detailed data | |
| Maximumcurrent per I/O channel | 2A |
| Maximum current process connection | 5A |
| Solid:0.2-4mm² | |
| Stranded:02-2.5mm²,24-12 AWG | |
| Acceptable wire sizes | |
| Recommended torque:0.5-0.6 Nm | |
| Stripping length:7mm | |
| Dielectric test voltage | 500Va.c. |
FAQ
Q1: Is this module brand new and original?
A1: Yes, the TU844 3BSE02445R1 is fully new, factory-original, and ready for installation.
Q2: What is the typical delivery time?
A2: We ship within 3 days to 2 weeks depending on order size, using carriers like DHL.
Q3: Does this module support redundancy?
A3: Yes, the TU844 is a redundant MTU designed for high-reliability networks.
Q4: What is the maximum number of channels?
A4: This unit supports 8 I/O channels for efficient module communication.
Q5: Can it be used for S800 system integration?
A5: Absolutely, it is fully compatible with ABB DCS/800xA S800 I/O modules.
Manual/Datasheet PDF
TU844 3BSE02445R1 ABB DCS 800xA Redundant MTU 50V datasheet
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