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ABB DI810 Digital Input Module | 3BSE008508R1 | S800 I/O System | 16-Channel 24VDC | 2 Groups of 8 Isolated | Current Sinking | 6mA per Channel | Configurable Input Filter | LED Status Indicators | Op

ABB DI810 (part no. 3BSE008508R1) Digital Input Module, is the standard digital input module for ABB S800 I/O system, equipped with 16 digital input channels, input voltage 24V DC (operating range 18-30V DC), input current 6mA per channel, current sinking (leakage-type) input. The 16 channels are divided into 2 groups of 8 channels each, with electrical isolation between groups, each group equipped with one process voltage supervision input to monitor channel power supply anomalies. Each input c

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Product Details

1. Product Overview

The ABB DI810 (part no. 3BSE008508R1) Digital Input Module is the standard digital input module in ABB's S800 I/O system, specifically designed for digital signal acquisition in industrial automation control systems. It collects the status signals of various field digital devices (such as pushbuttons, limit switches, relay contacts, contactor auxiliary contacts, proximity switches, photoelectric switches, etc.) and transmits them to the controller, achieving real-time monitoring of field device operating status.

In modern industrial automation control systems, the digital input (DI) module is one of the most basic and widely used I/O module types, responsible for collecting the on/off status of field devices (start/stop, run/stop, in-position/not-in-position, material present/absent, etc.), serving as the "eyes" of the control system to perceive field status. As the standard digital input module of the ABB S800 I/O system, the DI810 is widely applied in petrochemical, power, metallurgy, papermaking, water treatment, pharmaceutical, food & beverage, rail transit, building automation and various industrial automation fields, with its high reliability, strong anti-interference capability, flexible configuration and convenient maintenance features.

The DI810 is equipped with 16 digital input channels, with nominal input voltage of 24V DC, operating voltage range of 18-30V DC, input current of 6mA per channel (@24V), adopting current sinking (leakage-type) wiring method. It can be directly connected to NPN-type proximity switches, photoelectric switches and other field devices, or connected to various passive switch signals via external relay contacts. Input impedance is approximately 3.5kΩ, "0" state recognition voltage range is -30~+5V, "1" state recognition voltage range is 15~30V, with clear thresholds and strong anti-interference capability.

The 16 input channels are divided into 2 groups, with 8 channels per group, and electrical isolation between the two groups. They can be respectively connected to different field power supplies or different signal loops, avoiding mutual interference between different loops and improving system reliability. Each group is equipped with one Process Voltage Supervision Input, which can real-time monitor the external power supply voltage status of that group's channels. When the power supply voltage is abnormal (such as power loss, undervoltage), the module automatically reports fault information, facilitating maintenance personnel to quickly locate field power supply problems and avoiding signal misjudgment caused by power supply failure.

Each input channel consists of a complete signal conditioning circuit, including current limiting components (limiting input current to protect internal circuits), EMC protection components (suppressing surges, burst, electrostatic and other electromagnetic interference), input status indication LED (intuitively displaying the input status of that channel, green/on indicates "1" state, off indicates "0" state) and opto-isolation barrier (achieving electrical isolation between field signals and module internal circuits, preventing ground loop interference and common-mode voltage effects, improving system safety and anti-interference capability). This complete channel circuit design ensures the accuracy and reliability of signal acquisition in harsh industrial electromagnetic environments.

The DI810 supports configurable input filter time, selectable between 2ms, 4ms, 8ms, and 16ms. Users can flexibly select appropriate filter time according to field signal characteristics (such as mechanical contact bounce, proximity switch response speed, interference intensity, etc.). For signals prone to bounce such as mechanical pushbuttons and limit switches, longer filter time (such as 8ms or 16ms) can be selected to effectively eliminate false triggers caused by contact bounce; for electronic signals with faster response such as proximity switches and photoelectric switches, shorter filter time (such as 2ms or 4ms) can be selected to improve signal acquisition real-time performance.

The module front panel is equipped with rich LED status indicators, including module running indicator (green, indicating module normal operation), fault indicator (red, indicating module hardware or communication fault), warning indicator (yellow, indicating process voltage supervision abnormality and other warning information), and independent status indicators for 16 channels (one LED per channel, intuitively displaying the input status of that channel). Through the front panel indicators, maintenance personnel can quickly judge module working status, communication status and each channel input status on-site, without connecting to programming software for basic fault diagnosis, greatly improving on-site maintenance efficiency.

In terms of electrical performance, the DI810 has a rated insulation voltage of 50V, dielectric test voltage of 500V AC, with reliable electrical isolation between channels and between channels and system. The module typical power consumption is only 1.8W, with low power consumption and low heat generation, suitable for long-term continuous operation and dense installation in control cabinets. Wide operating temperature range (industrial grade, specific range refer to official manual), strong electromagnetic interference resistance, complying with IEC 61000 series EMC standards and CE certification requirements, capable of stable operation in harsh industrial environments.

In terms of mechanical structure, the DI810 adopts modular design, with dimensions of width 45mm × height 119mm × depth 102mm, weight approximately 0.2kg, compact structure, small DIN rail footprint, suitable for dense installation in control cabinets. The module needs to be used with the S800 I/O system termination base, either TU810V1 compact base or TU830V1 extended base. All field wiring is connected to the base, and the module is directly plugged into the base via connectors, supporting module hot-swap. When replacing the module, no field wiring needs to be disconnected, greatly reducing maintenance time and improving system availability.

As a standard module of the ABB S800 I/O system, the DI810 seamlessly integrates with ABB AC800M, AC800F and other DCS systems, as well as AC31, AC500 and other PLC systems, achieving data exchange via standard communication interfaces (Profibus DP, Modbus TCP, Ethernet/IP, IEC 61850, etc.). It can be directly configured and diagnosed in ABB Control Builder programming software, plug-and-play, no additional development required. The product complies with RoHS directive (EU Directive 2011/65/EU), environmentally compliant. Comes with a 12-month quality warranty.

2. Specifications

表格

Parameter	Value
Brand	ABB (Switzerland/Sweden)
Model	DI810
Part No.	3BSE008508R1
Product Type	Digital Input Module
System	ABB S800 I/O System
Number of Channels	16 channels
Channel Grouping	2 groups, 8 channels per group, isolated between groups
Input Voltage (nominal)	24 V DC
Input Voltage Range	18 ~ 30 V DC (operating range)
"0" State Recognition Voltage	-30 ~ +5 V
"1" State Recognition Voltage	15 ~ 30 V
Input Current per Channel	6 mA @ 24 V DC
Input Impedance	Approx. 3.5 kΩ
Input Type	Current Sinking (leakage-type input)
Input Filter Time	Configurable: 2 / 4 / 8 / 16 ms
Process Voltage Supervision	1 voltage supervision input per group, total 2
Channel Status Indication	1 LED per channel, total 16
Module Status Indicators	Running (green), Fault (red), Warning (yellow) LEDs
Opto-Isolation	Per channel opto-isolation barrier
Channel Circuit Composition	Current limiting + EMC protection + LED indication + opto-isolation
Rated Insulation Voltage	50 V
Dielectric Test Voltage	500 V AC
Typical Power Consumption	1.8 W
Signal Acquisition Rate	Up to 1000 Hz (reference)
Compatible Base	TU810V1 (compact) / TU830V1 (extended)
Hot Swap	Supports module live hot-swap (with compatible base)
Mounting Method	DIN rail mounting (via compatible base)
Dimensions (W×H×D)	45 mm × 119 mm × 102 mm
Weight	Approx. 0.2 kg
Operating Temperature	To be confirmed (reference 0°C ~ +55°C or -20°C ~ +70°C, industrial grade)
Storage Temperature	To be confirmed (reference -40°C ~ +85°C)
Humidity	To be confirmed (reference 5% ~ 95% RH non-condensing)
Protection Degree	IP20 (module level, installed in control cabinet)
EMC Standard	IEC 61000 series (specific level to be confirmed)
Certification	CE (complies with EU Directive 2011/65/EU RoHS)
Configuration Software	ABB Control Builder / Compact Control Builder
Compatible Controllers	AC800M, AC800F, AC31, AC500, etc.
Communication Protocols	Via communication interface modules supports Profibus DP, Modbus TCP, Ethernet/IP, IEC 61850, etc.
HS Code	85389099 (ABB official)
Country of Origin	To be confirmed (ABB global manufacturing base)
Stock Status	Order available
Warranty Period	12 months

3. Key Features

16-Channel High-Density Input, Saves Space and Cost — The DI810 is equipped with 16 digital input channels, achieving 16-channel digital signal acquisition in a compact size with module width of only 45mm, high channel density, effectively saving DIN rail mounting space and control cabinet space, reducing per-channel cost. The 16 channels are divided into 2 groups of 8 channels, with isolation between groups, can be respectively connected to different field power supplies or signal loops, flexible configuration, adapting to various field wiring requirements.
24VDC Wide Voltage Input, Clear Thresholds and Anti-Interference — Nominal input voltage 24V DC, operating range 18-30V DC, adapting to voltage fluctuations of industrial field 24V control power. "0" state recognition voltage -30~+5V, "1" state recognition voltage 15-30V, clear thresholds, small intermediate transition zone, effectively preventing status misjudgment caused by voltage fluctuations or interference. Input current 6mA@24V per channel, input impedance approx. 3.5kΩ, current sinking (leakage-type) input, can be directly connected to NPN-type sensors and passive contact signals.
Dual-Group Isolation + Process Voltage Supervision, High Reliability — The 16 channels are divided into 2 groups, 8 channels per group, with electrical isolation between the two groups, can be respectively connected to different field power supply loops, avoiding ground loop interference and common-mode voltage effects between different loops. Each group is equipped with one process voltage supervision input, real-time monitoring the external power supply voltage status of that group's channels. When power loss or voltage abnormality occurs, automatically reports fault information, facilitating maintenance personnel to quickly locate field power supply problems, avoiding total signal loss or misjudgment caused by power supply failure, greatly improving system reliability and maintainability.
Complete Signal Conditioning Circuit per Channel, Excellent EMC Performance — Each input channel consists of a complete signal conditioning circuit, including current limiting components (limiting input current, protecting internal circuits), EMC protection components (suppressing surges, burst, electrostatic and other electromagnetic interference), input status indication LED and opto-isolation barrier (achieving electrical isolation between field signals and internal circuits). The complete channel circuit design ensures the accuracy and reliability of signal acquisition in harsh industrial electromagnetic environments (near strong interference sources such as frequency converters, motors, contactors), complying with IEC 61000 series EMC standards.
Configurable Input Filter Time, Adapts to Different Signals — Supports input filter time flexibly configurable between 2ms, 4ms, 8ms, 16ms. Users can select appropriate filter time according to field signal characteristics. For signals prone to bounce such as mechanical pushbuttons, limit switches, relay contacts, select longer filter time (8ms or 16ms) to effectively eliminate false triggers caused by contact bounce; for electronic signals such as proximity switches, photoelectric switches, select shorter filter time (2ms or 4ms) to improve signal acquisition real-time performance. Flexible filter configuration enables the module to adapt to various field signal types without additional hardware filtering.
Rich LED Status Indicators, Convenient On-Site Diagnosis — The module front panel is equipped with rich LED status indicators: running indicator (green), fault indicator (red), warning indicator (yellow), and independent status indicators for 16 channels (one per channel). Through the indicators, maintenance personnel can quickly judge module working status, communication status, process voltage status and each channel input status on-site, without connecting a laptop and programming software for basic fault diagnosis and signal troubleshooting, greatly improving on-site maintenance efficiency and reducing downtime.
Compatible Base + Hot-Swap, Efficient Non-Stop Maintenance — The DI810 needs to be used with S800 I/O system termination base (TU810V1 compact or TU830V1 extended). All field wiring is connected to the base, and the module is directly plugged into the base via connectors. Supports module live hot-swap: modules can be safely pulled out and plugged in while the system is running. When replacing a faulty module, no field wiring needs to be disconnected, no system shutdown required, greatly reducing maintenance time and improving system availability, especially suitable for critical industrial processes requiring continuous operation.
Low Power Consumption and High Insulation, Safe, Stable and Long-Life — Module typical power consumption is only 1.8W, low power consumption, low heat generation, suitable for long-term continuous operation and dense installation in control cabinets. Rated insulation voltage 50V, dielectric test voltage 500V AC, with reliable electrical isolation between channels and between channels and system, ensuring electrical safety of operators and equipment. Industrial-grade components and fanless natural cooling design, no moving parts, long Mean Time Between Failures (MTBF), low maintenance cost, capable of long-term stable operation in harsh industrial environments.
Seamless Integration with ABB DCS/PLC, Plug-and-Play — As a standard module of the S800 I/O system, the DI810 seamlessly integrates with ABB AC800M, AC800F and other DCS systems, as well as AC31, AC500 and other PLC systems, supporting multiple communication protocols such as Profibus DP, Modbus TCP, Ethernet/IP, IEC 61850 via communication interface modules (CI801/CI840 etc.). Channel parameters (filter time, signal type, diagnosis, etc.) can be directly configured and channel status read in ABB Control Builder programming software, plug-and-play, no additional development and programming required, reducing system integration difficulty and cost.
Industrial-Grade Quality, Widely Verified Across Industries — ABB, as a global leading industrial automation brand, the S800 I/O system has undergone strict industrial-grade testing and verification, with numerous successful application cases in various industries worldwide. The DI810 module uses industrial-grade materials and components, wide operating temperature range, vibration and shock resistance, complying with CE certification and RoHS directive, capable of long-term stable operation in petrochemical, power, metallurgy, papermaking, water treatment, pharmaceutical, food & beverage, rail transit, building automation and various industrial environments, with product quality and performance widely verified across industries.

4. Typical Applications

Pushbutton and Operator Panel Signal Acquisition: Collect start/stop/emergency stop pushbuttons, selector switches, indicator feedback and other digital signals from field operation stations, control panels, operator consoles, achieving operator command acquisition and equipment control
Limit Switch and Position Signal Acquisition: Collect valve limit switches (open/close position), cylinder/hydraulic cylinder travel switches, hoist/conveyor position switches, lifting platform position switches and other position signals, achieving equipment movement position monitoring and interlock control
Relay and Contactor Auxiliary Contact Acquisition: Collect auxiliary contact signals (NO/NC) of intermediate relays, contactors, circuit breakers, monitoring electrical equipment operating status (run/stop, close/trip), achieving electrical interlock and status feedback
Proximity Switch and Photoelectric Switch Signal Acquisition: Collect digital output signals of NPN-type inductive proximity switches, capacitive proximity switches, photoelectric switches, fiber amplifiers, achieving object detection, position detection, counting, material presence/absence detection
Pressure Switch and Temperature Switch Signal Acquisition: Collect contact signals of mechanical digital instruments such as pressure switches, temperature switches, flow switches, level switches, achieving process parameter over-limit alarm and interlock protection (e.g., high pressure alarm, high temperature interlock shutdown)
Level Switch and Material Level Switch Signal Acquisition: Collect contact signals of float level switches, tuning fork material level switches, rotary paddle material level switches, capacitive material level switches, achieving high/low level/material level alarm and interlock control for storage tanks, silos, water pools
Safety Light Curtain and Safety Door Switch Signal Acquisition: Collect digital signals of safety light curtains, safety door switches, safety mats, emergency stop buttons and other safety devices (with safety relay or safety PLC), achieving mechanical equipment safety protection and personnel safety interlock
Motor Running Status and Fault Signal Acquisition: Collect running status, fault alarm, ready and other digital signals of motor protectors, soft starters, frequency converters, achieving motor running status monitoring and fault alarm management
Valve Position Feedback and Solenoid Valve Status Acquisition: Collect open/close position signals of valve positioners (limit switch boxes), feedback signals of solenoid valves, achieving valve switch status monitoring and control loop integrity check
Belt Conveyor Protection Switch Acquisition: Collect pull-cord switches, belt misalignment switches, slip switches, tear switches, blockage switches and other belt conveyor protection device digital signals, achieving conveyor safety protection and fault alarm
Crane and Hoist Status Signal Acquisition: Collect limit switches, overload limiters, anemometers, door switches and other digital signals of cranes/hoists, achieving lifting equipment safety monitoring and interlock protection
Water Treatment Equipment Status Acquisition: Collect pump run/fault, valve open/close position, high/low level, flow switch and other signals, achieving automatic control and monitoring of water treatment processes
HVAC Air Conditioning and Ventilation System Signal Acquisition: Collect fan run/fault, damper open/close position, filter differential pressure switches, anti-freeze switches, temperature/humidity switches and other signals, achieving automatic control and energy-saving operation of HVAC systems
Building Automation and Smart Building Signal Acquisition: Collect lighting switch status, curtain position, access control status, fire alarm, elevator running status and other signals, achieving centralized monitoring and intelligent management of building equipment
Rail Transit Signal System Acquisition: Collect track circuits, signal machines, switch positions, axle counters and other signal equipment digital status, achieving status monitoring and interlock control of rail transit signal systems
Power Substation Signal Acquisition: Collect circuit breaker positions, disconnector positions, earthing switch positions, protection device operation signals, alarm signals and other digital signals, achieving substation equipment status monitoring and automation control
Petrochemical Plant Signal Acquisition: Collect pump run/fault, valve position feedback, pressure switches, temperature switches, level switches, flame detection, combustible gas alarm and other signals, achieving automatic control and safety interlock of petrochemical production processes
Metallurgical Production Line Signal Acquisition: Collect rolling mill running status, roller table position, pusher position, heating furnace door switch, cooling water flow switch and other signals, achieving automatic control and equipment monitoring of metallurgical production processes
System Expansion and Spare Part Replacement: As a standard digital input module of the S800 I/O system, used for I/O expansion in new projects and faulty module replacement, channel expansion in in-service systems, with strong module universality and simple spare part management

5. Model Explanation

Product Model: DI810

Part No.: 3BSE008508R1

Product Description: Digital Input Module, 16 channels, 24V DC, 2 groups of 8 channels isolated, Current Sinking

Model code breakdown:

D: Digital identifier
I: Input identifier
810: Module model code (800 series, compatible with S800 I/O system)

Part No. Explanation:

3BSE008508R1 is ABB standard part number format
3BSE: ABB product category code (industrial automation products)
008508: Product sequence number
R1: Revision 1, hardware revision

Key Parameters Summary:

表格

Parameter	Value
Channels	16
Grouping	2 groups × 8 channels, isolated between groups
Input Voltage	24V DC (18-30V DC)
Current per Channel	6mA @ 24V
Input Type	Current Sinking (leakage-type)
Filter Time	2/4/8/16ms configurable
Process Voltage Supervision	1 per group, total 2
Channel LEDs	16 (1 per channel)
Module LEDs	Running/Fault/Warning
Opto-Isolation	Per channel
Insulation Voltage	50V
Dielectric Test	500V AC
Typical Power Consumption	1.8W
Dimensions	45×119×102mm
Weight	Approx. 0.2kg
Compatible Base	TU810V1 / TU830V1
Hot Swap	Supported

S800 I/O Digital Input Module Series Comparison:

表格

Model	Part No.	Channels	Input Voltage	Grouping	Features
DI801	3BSE020508R1	16	24V DC	1 group × 16	Economy type, no group isolation
DI802	3BSE022360R1	8	120V AC	-	AC input
DI803	3BSE022362R1	8	230V AC	-	AC input
DI810	3BSE008508R1	16	24V DC	2 groups × 8, isolated	This product, standard type, with voltage supervision
DI811	3BSE008510R1	16	48V DC	2 groups × 8	48V input version
DI814	3BSE008514R1	16	24V DC	-	With SOE sequence of events
DI818	3BSE008518R1	8	24V DC	-	High-speed counter/pulse input
DI820	3BSE008520R1	16	24V DC	-	Source/sink configurable
DI821	3BSE008521R1	8	24V DC	-	Source/sink configurable
DI825	-	16	24V DC	-	Safety DI (SIL)
DI830	3BSE008530R1	16	24V DC	-	Digital input + SOE
DI831	3BSE008531R1	16	24V DC	-	Digital input + SOE
DI840	3BSE008540R1	16	24V DC	-	High-performance digital input
DI880	3BSE008580R1	16	24V DC	-	High-density digital input
DI885	-	16	24V DC	-	High-density digital input

Compatible Bases Reference:

TU810V1: Compact Module Termination Unit, suitable for standard 8-channel modules
TU811V1: Compact base (with power switch)
TU812V1: Compact base (extended)
TU830V1: Extended Module Termination Unit, suitable for DI810 and other 16-channel modules
TU831V1: Extended base (with power switch)
TU832V1: Extended base (extended)

Brand: ABB (ASEA Brown Boveri), global leading industrial automation and power technology company, headquartered in Zurich, Switzerland

Official Documentation:

DI810 Product Data Sheet
S800 I/O System User's Guide
S800 I/O System Installation and Safety Instruction

6. Installation & Usage Instructions

Pre-Installation Preparation:

Confirm DI810 module model and part number match design requirements
Confirm compatible termination base model (TU810V1 or TU830V1) is mounted in place
Confirm field input signal types (24V DC digital, NPN-type sensors, passive contacts, etc.) match the module
Prepare installation tools (screwdriver, wire stripper, crimping tool, multimeter, etc.)
Prepare signal cables (shielded cables, selected according to field environment)
Read S800 I/O system installation manual and DI810 product data sheet
Confirm 24V DC field control power supply capacity meets total current demand of all input channels (16 channels × 6mA = 96mA, plus sensor power supply)

Installation Notes:

Base installation and wiring must be performed in de-energized state, ensuring personal and equipment safety
Wear anti-static wrist strap to avoid electrostatic damage to module circuits
DI810 module has IP20 protection rating, must be installed inside control cabinet, avoid direct exposure to humid, dusty, corrosive gas environments
Control cabinet should have appropriate protection rating (usually IP54 or above) and ventilation/cooling conditions
Before inserting module into base, confirm base model matches, base wiring completed, base mounted securely
When inserting module, align with base slot, push in smoothly until locking mechanism catches module, "click" sound
After insertion, confirm module is securely mounted, no loosening, front panel indicators normal
When multiple modules are mounted side by side, arrange closely to ensure reliable contact of bus connectors between modules
Leave appropriate cooling space between modules (reference at least 10-20mm spacing, or per manual requirements)
Avoid installing modules directly above heating elements (such as transformers, braking resistors, high-power relays)
Keep away from strong interference sources (such as frequency converters, transformers, contactors), or take shielding measures
Signal cables use shielded cables, routed separately from power cables, avoid parallel routing
Shield grounded at one end, avoid forming ground loop
Before first power-on, check all wiring, confirm voltage polarity correct, no short circuit

Wiring Instructions (current sinking/leakage-type input as example):

Common Terminal Wiring: Each group (8 channels) has one common terminal (COM), 2 groups total 2 common terminals, respectively connected to negative pole (0V) of 24V DC power supply
Channel Input Wiring: Each channel input terminal is connected to positive pole of field signal (+24V DC). When field switch closes or sensor output conducts, +24V DC+ is connected to channel input terminal via switch/sensor, current flows from channel input terminal into module, through internal circuit to common terminal (0V), forming a loop, module detects "1" state
Passive Contact Wiring: Field pushbuttons, limit switches, relay contacts and other passive switches: one end connected to +24V DC+, other end connected to module channel input terminal. When switch closes, channel energized as "1"; when open, as "0"
NPN-type Sensor Wiring: NPN-type proximity switch, photoelectric switch output terminal (OUT, black wire) connected to module channel input terminal; sensor power positive (brown wire) connected to +24V DC+, power negative (blue wire) connected to 0V. When sensor detects object, output conducts
Process Voltage Supervision Wiring: Each group's process voltage supervision input terminal connected to that group's field +24V DC+ power supply, used for monitoring power supply voltage status of that group's channels. When that group's power is lost or voltage too low, module reports warning information
Two Groups Independent Power Supply: The 2 groups of channels can respectively use different 24V DC power supplies (e.g., one group from UPS, one group from normal power supply), with isolation between the two groups, no mutual influence
Grounding Wiring: Shielded cable shield grounded at one end (control cabinet side), module protective grounding achieved via base and control cabinet grounding bar
All wiring terminals should be tight and reliable, torque meets manufacturer requirements, avoid virtual connections
After wiring completion, verify correspondence between each channel and field signal, avoid miswiring

Configuration & Commissioning:

Confirm base mounting and wiring completed, DI810 module plugged in place
Turn on 24V DC power, observe module power and running indicator status
Connect controller via ABB Control Builder / Compact Control Builder programming software
Add DI810 module in hardware configuration, confirm module is correctly recognized by controller
Configure parameters for each channel:
- Channel enable/disable
- Input filter time (2ms / 4ms / 8ms / 16ms, selected according to signal type)
- Signal type (NO/NC contact, can invert in software)
- Process voltage supervision enable/disable
- Diagnostic function enable/disable
Download configuration to controller
Test each channel:
- Trigger field switch or sensor one by one, confirm corresponding channel LED indicator lights up
- Confirm corresponding channel status correctly changes (0→1 or 1→0) in programming software or monitoring screen
- Test all 16 channels, confirm no bad points, no false alarms
Test process voltage supervision: Disconnect field 24V power of one group, confirm module reports voltage supervision warning information
Test communication: Confirm module communicates with controller normally, data refreshes normally
Test fault diagnosis: Pull out module (hot-swap test), confirm controller correctly reports module fault information, automatically recovers after reinsertion
Save configuration file, make configuration backup
Record module mounting position, channel assignment table (channel number corresponding to field device name and signal type), filter time configuration etc., include in project documentation

Usage Notes:

Module configuration and channel parameter settings should be completed by qualified automation professionals
Do not arbitrarily change configured channel parameters (such as filter time); changes require approval and testing
Do not block ventilation holes (if any) during module operation, maintain good heat dissipation
Regularly check module operating status, indicator status, communication status
Regularly check wiring terminals for looseness, especially in high-vibration areas
Regularly backup system configuration files (recommended quarterly or after each configuration change)
When module fails, can quickly replace via hot-swap; after replacement, confirm module automatically restores configuration and communication
When replacing module, first confirm new module model and hardware version match original module
Input signal voltage must not exceed module rated range (max 30V DC), overvoltage may damage module
It is strictly prohibited to connect AC voltage (such as 220V AC) to 24V DC input module, will immediately damage module
Module password (if any) should be properly kept, avoid unauthorized personnel changing configuration
Regularly perform input channel calibration (usually annually, per industry regulation requirements)

Maintenance Recommendations:

Daily inspection: Check module running, fault, warning indicator status, check each channel LED status consistent with field device status
Monthly check: Check communication status, module online status, alarm information, event records
Quarterly maintenance: Backup configuration files, check wiring terminals for looseness, clean dust from module and base surfaces
Annual calibration: Perform input channel accuracy calibration (test each channel threshold with standard signal source), insulation resistance test
Recommended to stock key spare parts: commonly used DI810 modules, compatible bases, communication interface modules for quick replacement in case of failure
Keep control cabinet clean, dry, well-ventilated, regularly clean dust
Avoid plugging/unplugging modules while energized (hot-swap supported, but still recommend cautious operation)
When upgrading controller firmware, confirm DI810 module firmware compatibility, upgrade module firmware if necessary
For long-term out-of-service systems, should periodically power-on check, avoid aging of capacitors and other components

Safety Notes:

Module operates at 24V DC safety voltage, but connected field equipment may be in high-voltage state (such as 220V AC contactors, motors), pay attention to high-voltage hazard of related equipment during maintenance
Maintenance of input modules involved in critical process control must follow plant safety management regulations, notify operators and take temporary control measures if necessary
Wait for module to fully discharge after power-off before plugging/unplugging
When replacing module, first disconnect power or confirm module supports hot-swap, then remove
It is strictly prohibited to connect AC voltage or voltage exceeding 30V DC to module input terminals, will damage module and may endanger safety
Discarded electronic modules should be disposed of per e-waste regulations, not 随意 discarded
Avoid outdoor control cabinet maintenance and wiring work during thunderstorms

7. Why Choose Us

Professional Procurement Channel, Quality Guaranteed — All products obtained through professional procurement channels, ensuring genuine ABB original products, with product identification and quality documents, provides 12-month quality warranty. Appearance check, model confirmation, and packaging verification performed before shipment, ensuring delivered products are intact and model-accurate.
Worldwide Delivery — Supports DHL, FedEx, UPS and other international couriers. Can also ship via your designated freight forwarder to 200+ countries, can arrange project site delivery and port delivery. Industrial electronic products use shock-proof, moisture-proof, anti-static professional packaging, ensuring transportation safety.
Professional Technical Support — Provides selection consultation (confirming input voltage, channel count, group isolation, filter time, compatible base model), installation/wiring guidance (sink/source wiring, NPN sensor wiring), configuration/commissioning support, fault diagnosis, and spare part replacement suggestions, helping you correctly select and successfully commission S800 I/O systems.
Flexible Procurement — Supports single module procurement and bulk project orders, tiered pricing discounts with quantity. Can provide whole-station I/O spare part packages (DI/DO/AI/AO modules + bases + communication modules + power combination) and annual spare part framework agreements.
Pre-shipment Inspection — Appearance check, packaging verification, model confirmation, part number verification performed before shipment, ensuring delivered products have accurate models and are intact.

8. Frequently Asked Questions (FAQ)

Q1: What is this DI810 module? How many channels does it have?

A: The DI810 is a Digital Input Module of the ABB S800 I/O system, part no. 3BSE008508R1, used for collecting the status of field 24V DC digital signals.

Key parameters:

Number of channels: 16 channels
Input voltage: 24V DC (operating range 18-30V DC)
Input current per channel: 6mA @ 24V
Input type: Current Sinking (leakage-type input)
Channel grouping: 2 groups, 8 channels per group, electrical isolation between the two groups
Each group equipped with 1 process voltage supervision input, total 2
Each channel has independent LED status indicator
Each channel has opto-isolation
Input filter time configurable: 2/4/8/16ms
Typical power consumption: 1.8W
Dimensions: 45×119×102mm, weight approx. 0.2kg
Needs to be used with TU810V1 or TU830V1 termination base

Simply put: The DI810 is a 16-channel 24V digital input acquisition module that collects the on/off status of field pushbuttons, limit switches, relay contacts, proximity switches and other devices into the PLC/DCS system. The 16 channels are divided into two groups of 8, with isolation between groups, can be respectively connected to different 24V power supplies, and each group can monitor whether power supply is normal.

Q2: What is the difference between DI810 and DI801? How to choose?

A: Both DI810 and DI801 are 16-channel 24V DC digital input modules of the S800 I/O system, but the main difference is channel grouping and isolation:

表格

Comparison Item	DI801	DI810 (this product)
Part No.	3BSE020508R1	3BSE008508R1
Channels	16	16
Input Voltage	24V DC	24V DC
Channel Grouping	1 group × 16 channels	2 groups × 8 channels
Group Isolation	No (all channels common ground)	Yes (two groups isolated from each other)
Process Voltage Supervision	No	Yes (1 per group, total 2)
Current per Channel	Reference 6mA	6mA @ 24V
Input Filter	Configurable	Configurable (2/4/8/16ms)
Opto-Isolation	Yes	Yes
Price	Lower (economy type)	Higher (standard type)
Application	Ordinary digital acquisition, all channels share one 24V power	Need two groups independent power, need power supervision, high anti-interference requirements

Selection recommendations:

Choose DI801 (economy type): All 16 channels share the same 24V DC power supply, no group isolation requirement, cost-sensitive, ordinary digital signal acquisition
Choose DI810 (standard type, this product):
- Need to divide 16 channels into two groups, respectively using different 24V power supplies (e.g., one group from UPS safety power, one group from normal control power)
- Need process voltage supervision function to monitor power supply status of each group
- Strong electromagnetic interference in field, need group isolation to improve anti-interference capability
- Two groups of signals respectively from different equipment or areas, need electrical isolation
- Project design explicitly specifies DI810
- Maintaining unified module model with existing systems, reducing spare part types

Simply put: If all 16 channels use the same 24V power supply with no special isolation requirements, the cheaper DI801 is sufficient; if you need to divide into two groups with independent power supplies, or need to monitor power supply voltage, or have high anti-interference requirements, choose DI810.

Q3: Is DI810 input type sinking or sourcing? How to wire?

A: The DI810 input type is Current Sinking, commonly known as leakage-type (sinking) input.

Meaning of Current Sinking (leakage-type) input:

Current flows from field signal terminal (+24V) into module input terminal, through module internal circuit to common terminal (0V)
Module "sinks" current, so called Current Sinking
Common terminal (COM) connected to 0V (power negative)
Input terminal connected to +24V (via field switch or sensor)

Wiring methods:

1. Passive contact (pushbutton, limit switch, relay contact) wiring:

+24V DC ──┬── Switch1 ── Channel1 input terminal
           ├── Switch2 ── Channel2 input terminal
           ├── ...
           └── Switch8 ── Channel8 input terminal
                        Common (COM) ── 0V DC

When switch closes, +24V connected to channel terminal, module detects "1"
When switch opens, channel terminal no voltage, module detects "0"

2. NPN-type sensor (proximity switch, photoelectric switch) wiring:

NPN sensor output terminal (OUT, black wire) connected to module channel input terminal
Sensor power positive (brown wire) connected to +24V DC+, power negative (blue wire) connected to 0V
Common (COM) connected to 0V
Note: NPN sensor output conducts to 0V, which is different from passive contact wiring. For NPN sensors, recommend using external relay conversion, or invert channel signal in software
Or use external relay: NPN sensor drives a 24V intermediate relay, relay NO contact one end connected to +24V, other end connected to module channel input terminal (COM connected to 0V). When sensor conducts, relay pulls in, channel is "1"

Important notes:

DI810 is sinking input, common terminal must be connected to 0V, input terminal connected to +24V is "1" state
If field uses PNP-type sensor (outputs +24V), can directly wire: PNP sensor output terminal connected to channel input terminal, sensor power +24V/0V normally connected, COM connected to 0V. When sensor conducts, outputs +24V, channel is "1" — actually PNP sensors are compatible with sinking input modules
If field uses NPN-type sensor (outputs 0V), pay attention to wiring method, recommend using external relay conversion, or invert channel signal in software
Most reliable method: Refer to wiring diagram in DI810 official manual, wire per manual recommended method

Two groups independent wiring:

DI810's 16 channels divided into 2 groups (channels 1-8 group 1, channels 9-16 group 2)
Each group has independent common terminal (COM1 and COM2)
Two groups can respectively use different 24V power supplies (e.g., power A and power B), with isolation between groups
Each group's process voltage supervision input terminal connected to that group's +24V power supply, for monitoring power supply status

Q4: How to select DI810 input filter time? What is its function?

A: The DI810 supports configurable input filter time, selectable between 2ms, 4ms, 8ms, and 16ms. The function of input filtering is to eliminate input signal bounce and interference, preventing false triggers.

How filter time works:

After module detects input status change, it does not immediately confirm, but continuously monitors that status
Only when new status persists longer than set filter time, module confirms status change and updates channel value
If new status persists less than filter time and recovers, module considers it bounce or interference, ignores the change

Applicable scenarios for different filter times:

表格

Filter Time	Applicable Signal Type	Description
2ms	Electronic sensors (proximity, photoelectric), high-speed pulse signals	Fastest response, suitable for bounce-free electronic signals, but weaker anti-interference
4ms	Electronic sensors, good-quality mechanical switches	Fast response, some anti-bounce capability, commonly used in general scenarios
8ms	Mechanical pushbuttons, limit switches, relay contacts	Effectively eliminates mechanical contact bounce, stronger anti-interference, commonly used for mechanical switches
16ms	Poor-quality mechanical switches, strong interference environments, slow signals	Strongest anti-bounce and anti-interference, but slowest response, suitable for slowly changing signals

Selection recommendations:

Mechanical pushbuttons, limit switches, relay contacts: Recommend 8ms or 16ms. Mechanical contacts produce several milliseconds of bounce when closing and opening. Without filtering, module may misjudge as multiple on/off, affecting counting and logic judgment. 8ms filtering is usually sufficient to eliminate most mechanical contact bounce
Proximity switches, photoelectric switches and other electronic sensors: Recommend 2ms or 4ms. Electronic sensor output signals are clean, no mechanical bounce, shorter filter time improves response speed, meeting real-time requirements
Strong electromagnetic interference environments (near frequency converters, motors, contactors): Recommend 8ms or 16ms. Longer filter time effectively suppresses false triggers caused by electromagnetic interference
High-speed counting or pulse signals: Recommend 2ms, and confirm module supports high-speed counting function (DI810 is mainly for ordinary digital acquisition, for high-speed counting recommend dedicated counter module such as DI818)

Notes:

Longer filter time means slower signal response. For applications requiring fast response (such as high-speed counting, precision positioning), select shorter filter time
Filter time set too long may cause real short pulse signals to be filtered out, resulting in missed detection
16 channels can be respectively set with different filter times (configured per channel in programming software), flexibly selected according to signal type connected to each channel
After setting filter time, recommend actual field testing to confirm signal acquisition accuracy and response speed meet requirements

Q5: Is this product in stock? What is the lead time? What is the price?

A: This model is currently in order available status, standard lead time 4-8 weeks (ordered through professional procurement channels or allocated from global inventory). The DI810 is a commonly used digital input module of the S800 I/O system with large usage, but specific inventory situation fluctuates with market.

Price: Specific price subject to our formal quotation, price depends on purchase quantity, supply channel, whether includes technical service and other factors. The DI810 as a standard digital input module has relatively moderate unit price; bulk procurement can enjoy tiered discounts.
Expedited service: If you have urgent needs (such as urgent project commissioning, system fault emergency repair, tight schedule), we can try to coordinate global stock inventory or expedited ordering, specific please contact our sales team.
Please indicate required quantity, compatible base model, project name, desired delivery time, and destination when inquiring, we will do our best to coordinate the fastest delivery solution and optimal price.
If you need to purchase compatible TU810V1/TU830V1 bases, communication interface modules and other I/O modules simultaneously, we can provide combined quotation for whole-station I/O spare part packages with more favorable prices.

Q6: How to judge and replace a faulty DI810 module? Does it need reconfiguration after replacement?

A: Module fault judgment methods:

Power/running fault: Module front panel running indicator (green) off or abnormal flashing, fault indicator (red) always on → may be module hardware fault, power abnormality, base poor contact
Communication fault: Controller reports module offline or communication interruption, module running indicator normal but data not refreshing → may be module communication interface fault, base bus connector poor contact, controller configuration issue
Channel fault: One or several channels input status not changing, inconsistent with field actual status, after excluding field signal and wiring problems → may be module corresponding channel input circuit damaged
All channels abnormal: All 16 channels simultaneously status abnormal or all not changing → may be module fault, common terminal wiring loose, 24V power fault, base fault
Warning indicator on: Warning indicator (yellow) always on → usually process voltage supervision alarm, check corresponding group's 24V power supply normal
Channel LED off: Field signal already connected but corresponding channel LED not on, monitoring screen also no change → may be channel damaged, wiring error, filter time set too long
Module abnormal heating: Module surface temperature obviously too high, peculiar smell → may be module internal circuit short circuit or damaged, should immediately power off and replace

Module replacement steps:

Notify operators and relevant departments, explain module replacement will be performed
DI810 supports hot-swap, can be replaced while system is running, but recommend first confirm related channel signal loss for short time will not affect safety (if involving interlock or safety signals, recommend temporarily mask or switch to manual control first)
Wear anti-static wrist strap
Release module locking mechanism (usually press release clip/latch on top or bottom of module)
Pull module out smoothly and vertically, avoid left-right shaking damaging connector pins
Check new module model (DI810) and part number (3BSE008508R1) match original module
Align new module with base slot, push in smoothly and vertically until locking mechanism catches module, "click" sound
Confirm module securely mounted, running indicator normally lights up
Confirm module automatically restores online in controller or monitoring screen, communication normal
Test each channel: trigger field signals one by one, confirm corresponding channel status correctly changes
Confirm process voltage supervision normal, no warning information
Restore system normal operating state, cancel temporary masking
Record replacement date, new module serial number, include in equipment ledger

Regarding reconfiguration:

No reconfiguration required. The DI810 is a standard I/O module, channel configuration (filter time, signal type, diagnosis, etc.) is stored in the controller's project configuration, the module itself does not store configuration. After replacing with same model module, controller automatically recognizes new module and downloads original configuration, no re-programming or re-configuration required
Recommended check after replacement: Confirm controller correctly recognizes new module, all channel configurations consistent with original configuration, process voltage supervision normal
If replacing with different model module (such as DI810 replaced with DI814), need to modify module model in controller hardware configuration, re-configure channel parameters, download configuration before normal operation
If base also needs replacement: Base replacement requires disconnecting all field wiring, must power off operation, after wiring completed need to verify channel correspondence one by one, relatively large workload (base failure rate is very low, usually does not need replacement)
Recommendation: After replacement, perform full channel test, confirm all 16 channels signal acquisition normal. If unsure about configuration, recommended to consult professional technical personnel.