Product Details
The ABB DI820 3BSE008512R1, also cataloged as the DI820 Digital Input Modules, operates as a dedicated hardware component for 120 VAC / 110 VDC signal acquisition and field discrete monitoring within ABB S800 I/O platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | DI820 |
| Part Number | 3BSE008512R1 |
| Brand | ABB |
| Product Type | Digital Input Modules |
| Origin | Sweden |
| Weight | 0.18 kg (0.4 lbs) |
| Dimensions | 45 x 119 x 102 mm (111 mm depth including connector) |
| Operating Temp | 0 to +55 deg C |
| Power Dissipation | Typ. 2.8 W |
| Signal Specification | 120 VAC / 110 VDC |
| Number of Channels | 8 channels (Current sinking, individually isolated) |
| Input Impedance | 12 kOhm (AC) / 39 kOhm (DC) |
| Input Voltage Range "0" | 0 to 30 VAC, 0 to 20 VDC |
| Input Voltage Range "1" | 77 to 130 VAC, 75 to 145 VDC |
| Selectable Digital Filter | 2, 4, 8, 16 ms |
| Modulebus Current Consumption | 50 mA (+5 VDC), 0 mA (+24 VDC) |
| Compatible Module Termination Units | TU811, TU813, TU831, TU839, TU851 |
Backplane Bus Communication Velocity and Channel Isolation
The 8-channel input interface incorporates individual channel-to-channel isolation with a 250 V rated insulation profile and 2000 VAC dielectric test withstand limit. Data processing across the +5 VDC Modulebus backplane maintains high backplane bus communication velocity and firmware flash compatibility during controller scanning. The internal logic handles digital filtering delays (2 to 16 ms) to prevent contact bounce from compromising high-density I/O channel states.
Frequently Asked Questions
Q: What is the power draw of the DI820 module from the +5 VDC Modulebus?
A: The module consumes 50 mA from the +5 VDC Modulebus backplane rail, with zero consumption on the +24 VDC bus lines.
Q: Which Module Termination Units (MTUs) accept the DI820 digital input card?
A: The module interfaces with TU811, TU813, TU831, TU839, and TU851 termination units using mechanical keying code AB.
Q: Are individual channels on the DI820 galvanically isolated from each other?
A: Yes, all 8 input channels are individually isolated, preventing common-mode fault propagation between discrete field loops.
Field Installation Guidelines
- Disconnect Modulebus power and field voltage sources before locking the DI820 module onto its designated MTU base.
- Verify that the mechanical keying code on the Module Termination Unit is set to AB prior to insertion.
- Align the 0.18 kg module and press firmly into the MTU guide slots until the top locking latch fully engages.
- Limit field cable runs to a maximum of 200 meters for AC circuits (100 pF/m limit) and 600 meters for DC signals.
- Keep AC discrete input field wiring separated from low-voltage communication cabling by a minimum distance of 200 mm.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
The Shift to Flexible IO Modules in Modern Industrial Automation
Traditional control systems rely on dedicated Input Output (IO) cards for industrial automation. Each conventional module processes a single signal type, such as Digital Input (DI), Digital Output (DO), Analog Input (AI), or Analog Output (AO). A standard 16-channel card accepts only one specific channel type across all ports. This inflexible hardware design often creates severe engineering bottlenecks during project execution. Engineers frequently must install entirely new cards to accommodate a single extra sensor. Consequently, late design changes increase control cabinet space requirements and drive up project costs.
DCS Commissioning Steps in Industrial Automation Projects
Commissioning a Distributed Control System (DCS) represents a crucial milestone when deploying modern process automation infrastructure. Field engineers must execute systematic verification steps to transition complex control hardware from static installation to dynamic plant control. Proper commissioning ensures that controllers, I/O modules, network switches, and HMI software operate in strict compliance with engineering design specifications before introducing live process fluids.
PLC and DCS Control System Spares Strategy: Engineering Guidelines
Modern factory automation relies on high-speed fiber optic backbones to link distributed control systems across noise-intensive industrial environments. Unlike copper wiring, optical fibers transmit data via light pulses, making them completely immune to electromagnetic interference (EMI). Field engineers must master optical cable joining and fusion splicing techniques to guarantee low-loss data transmission across critical Programmable Logic Controller (PLC) and Distributed Control System (DCS) nodes.