ABB TU836V1 MTU I/O Module 8 Channels 250V

ABB TU836V1 MTU: High-Density I/O Connection for DO820 and DO821

The ABB TU836V1 is a flexible Module Termination Unit (MTU) from the TU800 series. It manages up to 8 I/O channels with a maximum rated voltage of 250 V. Each channel supports a maximum rated current of 3 A. This MTU distributes the ModuleBus to the attached I/O module and forwards it to the next MTU in line. Additionally, it generates the correct address by shifting outgoing position signals to the next unit. You can mount the ABB TU836V1 on a standard DIN rail, and its mechanical latch locks it securely in place. Two mechanical keys offer 36 configurations for different I/O module types. Note that this keying only prevents wrong insertion; it does not change electrical functionality.

Key Technical Parameters of the TU836V1 MTU

For process connections, the TU836V1 provides two groups with 4 channels each. Each channel includes one fused load power terminal and one signal return connection. The process voltage connects to two individually isolated groups, adding safety. Specifically, the maximum current per I/O channel is 3 A, while the process connection handles up to 10 A. Acceptable wire sizes range from solid 0.2–4 mm² or stranded 0.2–2.5 mm² (24–12 AWG). Recommended torque is 0.5–0.6 Nm with a stripping length of 7 mm. The dielectric test voltage reaches 2000 V a.c. Therefore, this MTU suits demanding industrial environments.

Furthermore, the ABB TU836V1 is designed for single I/O configurations. It uses a terminal block connection and has 16 process connections total (2 terminals per channel). Four terminals handle process power, and another four carry process power (0V). The article number is 3BSE013237R1. This model is an Extended type, specifically used with I/O modules DO820 and DO821. Its robust design ensures reliable operation even under electrical stress.

Mechanical and Environmental Specifications

The TU836V1 operates within a temperature range of 0 to +55 °C (+32 to +131 °F). Approvals, however, are issued for +5 to +55 °C. Storage temperature spans -40 to +70 °C (-40 to +158 °F). The MTU has a pollution degree of 2 according to IEC 60664-1. Moreover, it meets corrosion protection ISA-S71.04: G3 and relative humidity from 5 to 95% non-condensing. The maximum ambient temperature is 55 °C (131 °F). Its protection class is IP20 per IEC 60529, making it suitable for control cabinet installation. Mechanical operating conditions comply with IEC/EN 61131-2. EMC standards include EN 61000-6-4 and EN 61000-6-2. Overvoltage categories follow IEC/EN 60664-1 and EN 50178. Equipment class is Class I according to IEC 61140 (earth protected).

Dimensions for the ABB TU836V1 are as follows: width 126 mm (5 in.) including connector, or 120.5 mm (4.74 in.) edge to edge when installed. Depth measures 64 mm (2.52 in.) including terminals, and height is 110 mm (4.3 in.). Weight is only 0.26 kg (0.57 lbs). Consequently, it occupies minimal panel space while providing high channel density.

Certifications and Compliance

The TU836V1 carries the CE mark and meets electrical safety standards EN 61010-1, UL 61010-1, EN 61010-2-201, and UL 61010-2-201. It is not rated for hazardous locations. Marine certifications include ABS, BV, DNV-GL, and LR. RoHS compliance follows EN 50581:2012, and WEEE compliance adheres to DIRECTIVE/2012/19/EU. Thus, you can deploy this MTU globally in regulated industries.

Frequently Asked Questions (FAQ)

1. Can the ABB TU836V1 be used with I/O modules other than DO820 and DO821?
No, the TU836V1 is specifically designed for single I/O configurations with DO820 and DO821 only. Other module types may not fit or function correctly.

2. What happens if I set the mechanical keys incorrectly?
The mechanical keys only prevent wrong module insertion; they do not affect electrical functionality. However, incorrect settings may block the I/O module from fitting into the MTU.

3. How does the TU836V1 generate addresses for multiple MTUs?
The ABB TU836V1 shifts outgoing position signals to the next MTU. This daisy-chain method ensures each I/O module receives a unique address without manual configuration.

4. Is grounding required for the TU836V1 on a DIN rail?
Yes, the latching device to the DIN rail provides grounding. For safety, ensure your DIN rail is properly earthed as per Class I equipment requirements.

5. What is the maximum total current for all 8 channels?
Each channel handles 3 A maximum. However, the total current depends on the process power connection limit of 10 A. Therefore, balance loads across the two isolated groups to stay within specifications.