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Overview
The TU837/TU837V1 is an 8-channel, 250 V Extended Module Termination Unit (MTU) designed for the S800 I/O system. The MTU acts as a passive unit, facilitating the connection of field wiring to I/O modules. It also manages the distribution of the ModuleBus and generates the correct address for the I/O modules. This ensures reliable communication between the MTU and the connected modules. The TU837/TU837V1 can handle a maximum rated voltage of 250 V and a maximum current of 3 A per channel.
The MTU can be mounted onto a DIN rail for easy installation. It features a mechanical latch for secure attachment to the rail, which can be released using a screwdriver. Mechanical keys provide additional configuration options, allowing for 36 different module types based on the position of the keys.
Each I/O channel is individually isolated, providing enhanced safety for field wiring. The MTU also includes fuse protection for each channel and offers the flexibility to use up to 8 I/O channels.
Key Features & Benefits
- 8 Channels for I/O connections, each with 2 terminals per channel.
- 250 V Maximum Voltage rating with a 3 A Maximum Current per I/O channel.
- Individually isolated process connections for enhanced safety.
- Fuse protection (3.15 A fast glass tube fuses) for reliable operation.
- Mechanical locking mechanism to ensure proper module positioning and initialization.
- Mechanical keys for configuring the MTU to match specific I/O modules.
Technical Specifications
| Feature | Value |
|---|---|
| Process Connections | 28 (up to 8 I/O channels, 2 terminals per channel) |
| Power Common Terminals | 2 x 6 |
| Maximum Current per I/O Channel | 3 A |
| Maximum Current per Process Connection | 10 A |
| ModuleBus Current Distribution | 1.5 A (5 V), 1.5 A (24 V) |
| Fuse Type | 3.15 A (fast glass tube, 5×20 mm) |
| Acceptable Wire Sizes (Signal Connection) | Solid: 0.2 – 6 mm², Stranded: 0.2 – 4 mm² (24 – 10 AWG) |
| Acceptable Wire Sizes (Return Connection) | Solid: 0.2 – 4 mm, Stranded: 0.2 – 2.5 mm² (24 – 12 AWG) |
| Stripping Length (Signal) | 8 mm |
| Stripping Length (Return) | 7 mm |
| Recommended Torque | 0.5 – 0.6 Nm |
| Dielectric Test Voltage | 2000 V a.c. |
| Mechanical Keys | 36 different combinations |
| I/O Module Lock | Locks module in place and enables operation |
Environmental & Certification
- CE Mark: Yes
- Electrical Safety: EN 61010-1, UL 61010-1, EN 61010-2-201, UL 61010-2-201
- Marine Certification: ABS, BV, DNV-GL, LR
- Temperature Range (Operating): 0 to +55 °C (+32 to +131 °F); Approvals for +5 to +55 °C
- Temperature Range (Storage): -40 to +70 °C (-40 to +158 °F)
- Pollution Degree: Degree 2, IEC 60664-1
- Corrosion Protection: ISA-S71.04: G3
- Relative Humidity: 5 to 95 %, non-condensing
- Max Ambient Temperature: 55 °C (131 °F)
- Protection Class: IP20 according to IEC 60529
- EMC Compliance: EN 61000-6-4, EN 61000-6-2
- Overvoltage Categories: IEC/EN 60664-1, EN 50178
- RoHS Compliance: EN 50581:2012
- WEEE Compliance: DIRECTIVE/2012/19/EU
Dimensions
- Width: 126 mm (5 in.) including connector, 120.5 mm (4.74 in.) edge-to-edge installed
- Depth: 64 mm (2.52 in.) including terminals
- Height: 110 mm (4.3 in.)
- Weight: 0.26 kg (0.57 lbs.)
Compatibility
- Use with I/O Modules: Compatible with DO820, DO821 I/O modules
- Mounting: Suitable for mounting in both directions
- Single/Redundant I/O: Single
About Us
Meloauto – Your Trusted Supplier for Original, Brand-New PLC and DCS Parts Meloauto offer a vast selection of products from globally recognized brands, including Allen Bradley, Bently Nevada, Honeywell, ABB, GE Fanuc, Siemens, Invensys Triconex, ICS Triplex, Foxboro, Yokogawa, Schneider, and Hima, among others. With tens of thousands of new parts ready to ship, Meloauto has successfully served customers across over 50 countries worldwide. We focus on supplying discontinued and hard-to-find items, ensuring each product is in brand-new, original condition.Contact Us
- Phone: +86-15915488782
- Email: [email protected]
- WhatsApp: +8615915488782
- Business Hours: 24/7 service
- Address: Unit 601, Powerlong International Center, No. 1599 Luling Road, Siming District, Xiamen City, Fujian, China
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