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The ABB TB820V2 serves as the physical and electrical bridge between the field instruments (sensors, actuators, valves) and the intelligent I/O modules of the AC 800M system.

Function: It holds the I/O module firmly in place and routes the signals from the field wiring terminals through the internal bus connectors to the module pins.

Compatibility: The ABB TB820V2 is compatible with a wide range of S800 I/O modules (e.g., AI810, AO810, DI810, DO810, CI810). It is essential to verify that the specific I/O module being used supports the TB820 series base.

Modularity: Designed for high-density installations, the ABB TB820V2 allows multiple bases to be mounted side-by-side on a standard DIN rail, creating a compact I/O station.

Durability: Constructed from high-grade industrial plastics and metals, the ABB TB820V2 is built to withstand harsh industrial environments, including vibration, temperature fluctuations, and electromagnetic interference.

Mounting Type: Standard 35mm DIN rail mounting.

Terminal Type: Typically features removable screw terminals or spring-cage terminals (depending on the specific sub-variant ordered with the base) for field wiring, facilitating easy maintenance without disconnecting wires.

Channel Density: Supports standard 8-channel, 16-channel, or specific density I/O modules, depending on the module inserted.

Voltage Rating: Rated for low voltage control circuits (typically up to 250V AC/DC for discrete signals, lower for analog), matching the ratings of the associated I/O modules.

Current Rating: The internal bus contacts are rated to handle the current requirements of the connected I/O module and field devices.

Dimensions: Compact form factor designed to minimize panel space; exact width depends on the number of terminals but generally aligns with the width of the corresponding I/O module.

Part Number: Often associated with order codes like 3BSE018100R1 (verify specific suffix for V2 revision).

Proper installation of the ABB TB820V2 ensures reliable signal transmission and mechanical stability:

DIN Rail Preparation: Securely mount a standard 35mm DIN rail in the control cabinet. Ensure the rail is grounded if required by local codes for shield termination.

Mounting the Base: Clip the ABB TB820V2 onto the DIN rail until it locks into place. If installing multiple bases, use the interlocking mechanisms on the sides to connect them rigidly before locking them to the rail.

Wiring: Strip field wires to the recommended length and insert them into the terminals of the ABB TB820V2. Tighten screws to the specified torque to ensure good contact and prevent loosening due to vibration.

Shielding: For analog or high-speed digital signals, terminate cable shields at the designated shield clamp area on or near the ABB TB820V2 to minimize noise.

Module Insertion: Once wiring is complete and verified, carefully plug the corresponding S800 I/O module into the ABB TB820V2. Ensure the module slides in smoothly and locks with the retention mechanism. Never force a module.

The ABB TB820V2 is a passive component, but its status affects the overall system operation:

Signal Transmission: In normal operation, the ABB TB820V2 transparently passes signals between the field and the I/O module. There are no LEDs or active electronics on the base itself.

Hot Swapping: One of the key advantages of the ABB TB820V2 system is support for hot swapping. If an I/O module fails, it can be removed from the ABB TB820V2 while the base remains wired and powered, allowing for replacement without shutting down the process (provided the system architecture supports it).

Maintenance Access: The removable terminal blocks (if equipped) on the ABB TB820V2 allow technicians to disconnect field wiring easily for testing or replacement of the entire base unit if damaged.

Fault Indication: While the base has no lights, faults in the wiring or connection will manifest as communication errors or bad values in the PLC CPU or engineering station (Control Builder).

Although passive, the ABB TB820V2 requires periodic inspection:

Visual Inspection: Check the ABB TB820V2 for physical damage, cracks, or signs of overheating (discoloration).

Terminal Tightening: Periodically check and retighten the field wiring terminals on the ABB TB820V2, especially after the first few months of operation or in environments with significant thermal cycling or vibration.

Corrosion Check: Inspect the metal contacts and terminals of the ABB TB820V2 for signs of corrosion, particularly in humid or chemically aggressive environments.

Labeling: Ensure that wire markers and labels on the ABB TB820V2 are legible and accurate to facilitate troubleshooting.

Cleanliness: Keep the ABB TB820V2 free from dust and conductive debris using compressed air.

Strain Relief: Ensure field cables are properly clamped and have strain relief so that mechanical stress is not transferred to the terminals of the ABB TB820V2.

Do you provide global shipping services?

Yes. We have local distribution centers on all continents, which can quickly transport parts to any corner of the world.

2. What payment methods and currencies do you accept?

To make your purchasing process as simple as possible, we offer multiple payment methods including bank transfer, check, and PayPal. Meanwhile, we also accept most mainstream credit and debit cards, such as Visa, Mastercard, and American Express. We can accept payments in most major currencies worldwide, but we recommend using US dollars (USD), British pounds (GBP), or euros (EUR) as a priority. Payments in other currencies may incur additional fees. All transactions are securely processed by HSBC Bank and HSBC Merchant Services.

How many parts do you currently have in stock?

We have a vast inventory of thousands of new, refurbished, and outdated automation components, including products from well-known manufacturers such as ABB and Schneider. If you cannot find the required parts, please do not worry. We work closely with a global network of professional suppliers to provide you with tailored quotes even if the part is not listed on our website.

Who can I contact if I encounter any problems?

Our experienced customer service team will handle any issues after you place your order.