ABB DI811 Digital Input Module – 16-Channel 48 V DC with Group Isolation
In demanding process environments, signal integrity is critical. The ABB DI811 Digital Input Module delivers precise 48 V DC sensing across 16 channels while maintaining robust isolation between groups. Designed for the S800 I/O system, this module ensures reliable data acquisition even in electrically noisy plants.
Key Features & Benefits
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16 digital inputs for 48 V DC current sinking signals
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Two isolated groups of 8 channels with individual voltage supervision
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Per-channel status LEDs for quick visual diagnostics
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Selectable digital filter times (2, 4, 8, or 16 ms) to suppress noise
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Groupwise isolation from ground enhances safety and reduces interference
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Process voltage supervision detects loss of field voltage and reports via ModuleBus
Technical Specifications
| Parameter |
Value |
| Article Number |
3BSE008552R1 |
| Type |
Digital Input |
| Signal Specification |
48 V DC |
| Number of Channels |
16 |
| Signal Type |
Current sinking |
| Input Voltage Range "0" |
-60 .. +10 V |
| Input Voltage Range "1" |
30 .. 60 V |
| Input Impedance |
11 kΩ |
| Isolation |
Groupwise isolated from ground, 2 groups with 8 channels |
| Filter Times (digital, selectable) |
2, 4, 8, 16 ms |
| Current Limiting |
Sensor power can be current limited by the MTU |
| Maximum Field Cable Length |
600 meters (656 yards) |
| Rated Insulation Voltage |
50 V |
| Dielectric Test Voltage |
500 V AC |
| Power Dissipation |
Typ. 2.7 W |
| Current Consumption +5 V Modulebus |
50 mA |
| Current Consumption +24 V Modulebus |
0 |
| Current Consumption +24 V External |
0 |
| Front LEDs |
F(ault), R(un), W(arning), Channel 1-16 ("0" or "1") |
| Supervision |
Process voltage, 1 per group |
| Status Indication of Supervision |
Module Error, Module Warning, Channel error |
| CE Mark |
Yes |
| Electrical Safety |
EN 61010-1, UL 61010-1, EN 61010-2-201, UL 61010-2-201 |
| Hazardous Location |
C1 Div 2 cULus, C1 Zone 2 cULus, ATEX Zone 2 |
| Marine Certification |
ABS, BV, DNV, LR |
| Temperature, Operating |
0 to +55 °C (+32 to +131 °F), approvals are issued for +5 to +55 °C |
| Temperature, 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), for vertical mounting in compact MTU 40 °C (104 °F) |
| Protection Class |
IP20 according to IEC 60529 |
| Mechanical Operating Conditions |
IEC/EN 61131-2 |
| EMC |
EN 61000-6-4 and EN 61000-6-2 |
| Overvoltage Categories |
IEC/EN 60664-1, EN 50178 |
| Equipment Class |
Class I according to IEC 61140; (earth protected) |
| RoHS Compliance |
DIRECTIVE/2011/65/EU (EN 50581:2012) |
| WEEE Compliance |
DIRECTIVE/2012/19/EU |
| Compatibility |
Use with MTU TU810, TU812, TU814, TU818, TU830, TU833, TU838, TU850 |
| Keying Code |
BD |
| Width |
45 mm (1.77”) |
| Depth |
102 mm (4.01”), 111 mm (4.37”) including connector |
| Height |
119 mm (4.7”) |
| Weight |
0.15 kg (0.33 lbs.) |
Industry Applications
The ABB DI811 excels in applications where reliable input sensing is paramount. In manufacturing lines, it monitors limit switches and proximity sensors, ensuring precise machine control. In process control, it reads valve position feedback and status contacts, contributing to safe and efficient operations. Its group isolation and voltage supervision make it ideal for power distribution monitoring, where ground loops and voltage dips are common concerns.
Installation & Setup Guidance
Mount the ABB DI811 on a standard S800 DIN rail. Connect field wiring to the compatible MTU (e.g., TU810, TU812, TU814, TU818, TU830, TU833, TU838, or TU850). Ensure the module is properly keyed (code BD) to prevent incorrect insertion. Apply the correct input voltage range (36-60 V DC) and observe polarity. For best EMC performance, use shielded cables and keep field wiring away from high-power conductors. Set filter times as needed to reject noise while maintaining response speed.
Maintenance & Reliability
The ABB DI811 is designed for long-term reliability with no moving parts. Periodic inspection of the front LEDs helps verify channel status and detect faults early. Check that the mounting and wiring remain secure. Operate within the specified temperature and humidity ranges to maximize service life. With proper care, this module provides years of dependable service, reducing downtime and maintenance costs.
Compatibility & Integration
This module is part of the ABB S800 I/O system and works seamlessly with ABB controllers. It pairs with the listed MTUs to provide termination and field wiring. The DI811 communicates via the ModuleBus, allowing supervision and diagnostics to be integrated into your control system.
Selection Guide & Purchasing Advice
Before ordering, verify that your system supports the ABB DI811 and that you have the correct MTU for your wiring needs. Confirm the input voltage and signal type match your field devices. PLC Source PRO offers genuine ABB DI811 modules with fast shipping. Choose us for reliable supply and competitive pricing.