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Description
ABB DI801 Digital Input Module
The ABB DI801 3BSE020508R1, also cataloged as the DI801 Digital Input Module, provides 24 VDC field signal acquisition for S800 I/O systems. The module executes direct electrical input processing through 16 isolated digital channels with channel status indication, filtering selection, and process voltage supervision capability.
Hardware Specifications
Parameter
Specification
Model
DI801 3BSE020508R1
Brand
ABB
Origin
Sweden
Product Type
Digital Input Module
System Platform
ABB S800 I/O
Signal Specification
24 VDC
Number of Channels
16 digital inputs
Signal Type
Current sinking
Input Voltage Range
"0": -30 to +5 V; "1": 15 to 30 V
Input Current
6 mA at 24 VDC
Input Impedance
3.5 kOhm
Isolation
Groupwise isolated from ground
HART Support
No
SOE Support
No
Redundancy
No
High Integrity
No
Intrinsic Safety
No
Filter Times
2 ms, 4 ms, 8 ms, 16 ms selectable
Maximum Field Cable Length
600 m
Rated Insulation Voltage
50 V
Dielectric Test Voltage
500 V
Power Dissipation
Typical 2.2 W
Modulebus +5 V Current Consumption
70 mA
Modulebus +24 V Current Consumption
0
Weight
0.24 kg
Dimensions
86.1 mm W x 58.5 mm D x 110 mm H
Operating Temp
0 to +55 deg C
Storage Temp
-40 to +70 deg C
Protection Class
IP20 according to IEC 60529
ABB S800 I/O Backplane and I/O Density Characteristics
The DI801 operates within the ABB S800 I/O architecture and provides direct digital signal processing through the ModuleBus interface. The module supports I/O density scaling with sixteen input channels integrated into one compact S800L mechanical design.
Each input channel contains current limiting components, EMC protection circuits, LED status indication, and an optical isolation barrier. Therefore, the module separates field signal conditions from internal electronics while maintaining channel-level diagnostic visibility.
The DI801 supports ABB S800 I/O backplane communication functions and maintains compatibility with standard S800 system configurations. Channel 16 can additionally monitor process voltage conditions for group supervision functions.
Frequently Asked Questions
Q: Does the DI801 support redundant input operation? A: No. The DI801 is specified as a non-redundant digital input module and provides one isolated group containing sixteen input channels.
Q: What diagnostic indications are available on the DI801 front panel? A: The module provides an S status LED for run or fault indication and individual channel LEDs for input states from channel 1 to channel 16.
Q: Can the DI801 monitor external process voltage conditions? A: Yes. Channel 16 can be configured as a process voltage supervision input for the input group.
Field Installation Guidelines
Install the DI801 module in an ABB S800 I/O station according to the approved mechanical arrangement. Verify that the module keying, connector alignment, and mounting position match the configured system design.
Connect field wiring according to the specified wire size range. Maintain proper separation between signal wiring and high-voltage conductors to reduce electromagnetic interference.
Use appropriate grounding practices for cabinet installation. Confirm that field cable shielding, EMC protection, and protective earth connections follow the site electrical installation standard.
Before commissioning, verify input polarity, 24 VDC field supply levels, channel LED operation, and process voltage supervision status through the control system diagnostics.
