TU844 System 800xA hardware selector
The TU844 MTU can have up to 8 I/O channels and 2 +2 process voltage connections. Each channel has two I/O connections and one ZP connection. Input signals are connected via individual shunt sticks, TY801. The shunt stick is used to choose between voltage and current input. The maximum rated voltage is 50 V and maximum rated current is 2 A per channel.
The MTU distributes the two ModuleBuses, one to each I/O module and to the next MTU. It also generates the correct address to the I/O modules by shifting the outgoing position signals to the next MTU.
The MTU can be mounted on a standard DIN rail. It has a mechanical latch that locks the MTU to the DIN rail.
Four mechanical keys, two for each I/O module, are used to configure the MTU for different types of I/O modules. This is only a mechanical configuration and it does not affect the functionality of the MTU or the I/O module. Each key has six positions, which gives a total number of 36 different configurations.
Features and benefits
- Complete installation of I/O modules using 2-wire connections and field power distribution.
- Up to 8 channels of field signals and process power connections.
- Connections to two ModuleBuses and I/O modules.
- Mechanical keying prevents insertion of the wrong I/O module.
- Latching device to DIN rail for grounding.
- DIN rail mounting.
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General info |
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Article number |
3BSE021445R1 |
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Type |
Redundant |
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Connection |
Terminal block |
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Channels |
8 |
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Voltage |
50 V |
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Mounting |
Horizontal |
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Mounting detail |
55 º (131 ° F) |
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Use with I/O |
AI845, AI880, AI880A and DP840 |
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Process connections |
40 up to 8 I/O channels (2 terminals per channel) 4 Process power 20 Process power (0 V) |
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Single/redundant I/O |
Redundant |
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Detailed data |
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Maximum current per I/O channel |
2 A |
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Maximum current process connection |
5 A |
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Acceptable wire sizes |
Solid: 0.2 - 4 mm² Stranded: 0.2 - 2.5 mm², 24 - 12 AWG Recommended torque: 0.5 - 0.6 Nm Stripping length: 7 mm |
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Dielectric test voltage |
500 Va.c. |
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Environment and certification |
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CE mark |
Yes |
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Electrical safety |
IEC 61131-2, UL 508 |
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Hazardous Location |
C1 Div 2 cULus, C1 Zone 2 cULus, ATEX Zone 2 |
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Marine certification |
ABS, BV, DNV-GL, LR, RS |
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Protection rating |
IP20 according to IEC 60529 |
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Corrosive atmosphere ISA-S71.04 |
G3 |
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Climatic operating conditions |
0 to +55 °C (Storage -40 to +70 °C), RH=5 to 95 % no condensation, IEC/EN 61131-2 |
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Pollution degree |
Degree 2, IEC 60664-1 |
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Mechanical operating conditions |
IEC/EN 61131-2 |
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EMC |
EN 61000-6-4, EN 61000-6-2 |
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Overvoltage categories |
IEC/EN 60664-1, EN 50178 |
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Equipment class |
Class I according to IEC 61140; (earth protected) |
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RoHS compliance |
EN 50581:2012 |
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WEEE compliance |
DIRECTIVE/2012/19/EU |
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Dimensions |
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Width |
131 mm (5.16”) including connector, 124 mm (4.88”) edge to edge installed |
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Depth |
64 mm (2.52”) including terminals |
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Height |
186.5 mm (7.34”) including locking device |
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Weight |
0.6 kg (1.3 lbs.) |
FAQ & Contact:
Q: Are you a trading company or a manufacturer?
A: We operate as a trading company.
Q: What is your lead time?
A: Our lead time typically ranges from one to three days if the product is in stock. For items not in stock, lead time will be negotiated.
Q: Do you offer samples? Is there a charge for them?
A: Sample availability and charges depend on the specific product and order quantity.
Q: What are your payment terms?
A: We generally require 100% T/T payment before shipping. For larger quantities, we are open to negotiation.
SHIPPING:
- For in-stock items, we will ship within 3 days of receiving payment.
- We offer worldwide shipping via DHL, UPS, FedEx, TNT, and EMS.
- If you have a preferred shipping agent, please inform us before shipment.
- We ensure secure packaging for the parts. If you have any special packaging requests, please let us know.
- We typically ship before 4:30 PM, and we will provide you with a tracking number after shipment. It usually takes 7-15 days to receive the packages.
- Upon receiving the package, please send us an email notification.
- To expedite the shipping cost estimation process, kindly provide the following information:
- Your zip code
- Your company name (if applicable) and your name
- Your phone number and extension (if applicable)
Company Services:
- Fast delivery (In-stock products shipped within 1-3 days)
- Extensive experience (Over 10 years of sales experience)
- Large inventory (Various brands and overseas warehouses)
- Quality assurance (Products come with a 1-year warranty and clear product condition)
Contact Us:
Phone: +86 18857985841
Email: sales@controltech-supply.com
Skype: +86 18857985841
WhatsApp: 8618857985841
Business Hours: We Provide Online Support 24/7
Address: 1100 Linjiang East Road, Bailongqiao, Wucheng District, Jinhua City, Zhejiang Province
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Product Condition
Factory New: New, current-production products sourced directly from the manufacturer.
New in Sealed Package: Unused products supplied in their original, factory-sealed packaging.
New in Original Package: Unused products supplied in original manufacturer packaging that was not factory-sealed.
Warranty
Products are covered by a 12-month warranty unless otherwise specified in the quotation or product listing. If a product has a quality issue, it can be exchanged within 12 months or refunded in full in cash. Contact our sales team with your order details if you require warranty assistance.
Shipping Information
In-Stock Items: Same-day dispatch is available for most in-stock orders with cleared payment received before 2:00 PM (UTC+8).
Indent Items: Typical lead time is 1–3 weeks, depending on availability and product scarcity.
Customs & Documentation
International shipments are prepared with a commercial invoice, packing list and available supporting documents. Consignee details, declared value and shipping terms are confirmed before dispatch. Tracking information is provided after shipment.
Payment
Payment is accepted by bank wire transfer only, in USD, EUR, GBP or RMB/CNY. Credit cards and credit terms are not accepted. Cleared payment is required before dispatch unless otherwise agreed in writing.
30-Day Returns
We accept return requests within 30 days of delivery for international orders, subject to our return policy.
To qualify, products must be unused, in their original condition and packaging, with proof of purchase.
How to Request a Return
Contact our sales team with your order number, product details and reason for return. Please obtain return authorization and the correct return address before shipping any items back. Returns are made by mail. Return shipping is not free. It is charged at the actual international air-freight cost based on weight and volume.
Refunds are processed according to our published return and refund policy after the returned items have been reviewed.
Quality issues
Quality issues are covered by the 12-month warranty. Within 12 months, a quality issue can be exchanged or refunded in full in cash.
For full terms, please refer to our Refund Policy.
Frequently ask questions
Click Request a Quote on the product page and provide the part number, quantity, and destination country. Our sales team will reply with availability, pricing, and estimated delivery time.
We supply original industrial automation parts in different new-product conditions, including Factory New, New in Sealed Package, and New in Original Package. The condition of each item is specified in...
Yes. We source obsolete and hard-to-find PLC, DCS, and industrial control components. Send us the exact part number and required quantity so we can check availability.
Most in-stock orders with cleared payment received before 2:00 PM (UTC+8) qualify for same-day dispatch. Indent items typically require 1–3 weeks, depending on availability.
Yes. We ship industrial automation spare parts worldwide. Shipping costs and transit times depend on the destination, package weight, dimensions, and local import requirements.
We commonly ship through DHL, FedEx, UPS, and other international courier services. The carrier is selected based on the destination, shipment size, and delivery requirements.
We accept bank wire transfers in USD, EUR, GBP, and RMB/CNY. Full cleared payment is required before shipment unless otherwise agreed in the written quotation.
Products generally include a 12-month warranty unless otherwise stated in the quotation or product listing. Contact our team with your order details for warranty assistance.
Eligible products may be returned within 30 days of delivery, subject to our return policy. Contact our team for return authorization and instructions before sending any items back.
Yes. Tracking details are provided after dispatch. Commercial invoices, packing lists, and available supporting documents are prepared for international shipments.