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Introduction
The TU846 is a module termination unit (MTU) for redundant configuration of the field communication interface CI840/CI840A and redundant I/O. The MTU is a passive unit having connections for power supply, two electrical ModuleBuses, two CI840/CI840A and two rotary switches for station address (0 to 99) settings.
A ModuleBus Optical Port TB842 can be connected to TU846 via TB846. Four mechanical keys, two for each position, are used to configured the MTU for the right types of modules. Each key has six positions, which gives a total number of 36 different configurations.
Module Termination Unit for dual CI840/CI840A, redundant I/O. TU846 are used with redundant I/O modules and TU847 with single I/O modules. The maximum ModuleBus length from the TU846 to the ModuleBus terminator is 2.5 meters. TU846/TU847 needs space to the left in order to be removed. Cannot be replaced with power applied.
General info
| Article number | 3BSE022460R1 |
| Communication protocol | PROFIBUS DP-V1 |
| Master or slave | N/A |
| Line redundancy | Yes |
| Module redundancy | Yes |
| Hot Swap | No |
| Type | Redundant CI840/CI840A, Redundant I/O |
| Power input | 24 V d.c. (19.2 - 30 V) |
| Mounting | Vertical or Horizontal |
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Contact Us
Email: sales6@5gplc.com
Business Hours: 24/7
Address: No.601, Hongwen Liuli, Siming District, Xiamen, China

Payment: T/T, Western Union.
Shipping port: Xiamen.
Lead time: Typically 1–3 working days after payment confirmation (subject to stock).
Worldwide delivery: We ship industrial automation parts to customers around the world. Freight is quoted with your RFQ.
F.A.Q.
Common questions about quotes, shipping, warranty and returnsClick Request a Quote on the product page and send us the part number, required quantity, and destination country. Our sales team will reply with current availability, pricing, and estimated delivery time.
In-stock items are normally prepared after payment and order confirmation. Most orders are dispatched from our warehouse in China, although the shipping location may vary depending on current stock.
Yes. We ship industrial automation parts to customers worldwide. Shipping cost and transit time depend on the destination, package weight, product size, and local import requirements.
We commonly use DHL, FedEx, UPS, and other international courier services. The carrier can be selected according to the destination, delivery speed, shipment size, and customer requirements.
Our products are generally covered by a 12-month warranty. Eligible products may also be returned under our 30-day refund policy. Please contact our team before returning any item to confirm the applicable terms and return instructions.
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