PRODUCT INFORMATION
Product Overview
The ABB DI825 3BSE036373R1 is an eight-channel digital input module for the S800 I/O system. It operates with a nominal 125 V d.c. signal specification and current sinking inputs. Each input channel contains optical isolation, current limiting components, and EMC protection circuits. Front-panel LEDs provide individual input state indication for all eight channels.
The module supports sequence of events recording with a resolution of 0.4 ms. Channels 1 and 8 can function as process voltage supervision inputs. Channel 1 monitors channels 2 through 4, while channel 8 monitors channels 5 through 7. Voltage loss on a supervision channel triggers a channel error and turns on the Warning LED. Module error signals transmit to the controller across the ModuleBus interface.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Signal specification | 125 V d.c. |
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| Number of channels | 8 |
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| Signal type | Current sinking |
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| HART | No |
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| SOE | Yes |
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| Redundancy | No |
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| High integrity | No |
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| Intrinsic safety | No |
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| Mechanics | S800 |
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| Input voltage range, "0" | 0 .. 20 V |
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| Input voltage range, "1" | 71 .. 156 V |
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| Input impedance | 41.5 kΩ |
|---|
| Isolation | Individually isolated channels |
|---|
| Filter times (digital, selectable) | 0...100 ms |
|---|
| Current limiting | Sensor power can be current limited by the MTU |
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| Maximum field cable length | 600 meters (656 yards) |
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| Event recording accuracy | -0.25 ms...1.0 ms |
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| Event recording resolution | 0.4 ms |
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| Rated insulation voltage | 250 V |
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| Dielectric test voltage | 2300 V a.c. Ch - Ground, 1350 V a.c. Ch - Ch |
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| Power dissipation | Max. 4.9 W |
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| Current consumption +5 V Modulebus | Max. 90 mA |
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| Current consumption +24 V Modulebus | 0 |
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| Current consumption +24 V external | 0 |
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| Front LED’s | F(ault), R(un), W(arning), Channel 1-8 Status |
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| Supervision | Process voltage. Channel 1 and 8 can be used per group |
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| Status indication of supervision | Module Error, Module Warning, Channel error |
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| CE mark | Yes |
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| Electrical safety | EN 61010-1, UL 61010-1, EN 61010-2-201, UL 61010-2-201 |
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| Hazardous Location | - |
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| Marine certification | - |
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| Temperature, Operating | 0 to +55 °C (+32 to +131 °F), approvals are issued for +5 to +55 °C |
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| Temperature, Storage | -40 to +70 °C (-40 to +158 °F) |
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| Pollution degree | Degree 2, IEC 60664-1 |
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| Corrosion protection | ISA-S71.04: G3 |
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| Relative humidity | 5 to 95 %, non-condensing |
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| Max ambient temperature | 55 °C (131 °F), for vertical mounting in compact MTU 40 °C (104 °F) |
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| Protection class | IP20 according to IEC 60529 |
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| EMC | EN 61000-6-4 and EN 61000-6-2 |
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| Overvoltage categories | IEC/EN 60664-1, EN 50178 |
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| RoHS compliance | EU RoHS, UAE RoHS, CN RoHS |
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| WEEE compliance | DIRECTIVE/2012/19/EU |
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| Use with MTU | TU811, TU813, TU831, TU839, TU851 |
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| Keying code | AB |
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| Width | 45 mm |
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| Depth | 102 mm, 111 mm including connector |
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| Height | 119 mm |
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| Weight | 0.14 kg |
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TECHNICAL INFORMATION
Features
- Eight individually isolated digital input channels rated for 125 V d.c.
- Current sinking input design with 41.5 kΩ input impedance.
- Sequence of events recording with 0.4 ms resolution.
- Selectable digital filter times ranging from 0 ms to 100 ms.
- Process voltage supervision capability on channels 1 and 8.
- Optical isolation tested to 2300 V a.c. channel-to-ground.
- Channel-to-channel isolation tested to 1350 V a.c.
- Conformal coating compliant with ISA-S71.04 severity level G3.
TECHNICAL INFORMATION
Applications
- 125 V d.c. binary process signal acquisition in S800 I/O installations.
- Supervisory control loops requiring individually isolated digital input channels.
- Sequence of events recording stations requiring millisecond time-stamping accuracy.
- Distributed process automation connected via ABB ModuleBus architecture.
TECHNICAL INFORMATION
Connections / Interfaces
- ModuleBus communication interface drawing maximum 90 mA at +5 V d.c.
- Mounts on Module Termination Units TU811, TU813, TU831, TU839, and TU851.
- Mechanical keying code AB ensures correct base orientation.
- Supports field wiring distances up to 600 meters.
TECHNICAL INFORMATION
Installation Guidelines
- Snap the module directly onto a compatible S800 Module Termination Unit.
- Verify mechanical keying code AB before insertion.
- Limit ambient temperature to 40 °C for vertical compact MTU mounting.
- Standard horizontal mountings support ambient temperatures up to 55 °C.
- Install the unit inside an enclosure meeting IP20 protection standards.
TECHNICAL INFORMATION
Configuration Guidelines
- Select digital filter times between 0 and 100 ms in engineering software.
- Enable process voltage supervision on channel 1 or channel 8 as required.
- Configure sequence of events logging parameters for millisecond time-stamping.
- Monitor module warning, module error, and channel error flags via ModuleBus.
TECHNICAL INFORMATION
Compatibility
- ABB S800 Module Termination Units TU811, TU813, TU831, TU839, and TU851.
- ABB S800 I/O communication interfaces supporting ModuleBus.
TECHNICAL INFORMATION
Compliance and Certifications
- CE mark
- Electrical safety: EN 61010-1, UL 61010-1, EN 61010-2-201, UL 61010-2-201
- EMC: EN 61000-6-4 and EN 61000-6-2
- Overvoltage categories: IEC/EN 60664-1, EN 50178
- RoHS compliance: EU RoHS, UAE RoHS, CN RoHS
- WEEE compliance: DIRECTIVE/2012/19/EU
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSABB S800 Module Termination Units TU811, TU813, TU831, TU839, and TU851. ABB S800 I/O communication interfaces supporting ModuleBus.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What is the primary input voltage specification for the ABB DI825?
The module operates at 125 V d.c. nominal. The active state input voltage ranges from 71 to 156 V.
Does the DI825 support Sequence of Events recording?
Yes. The module supports sequence of events recording with a resolution of 0.4 ms.
Which Module Termination Units are compatible with the ABB DI825?
The module mounts on ABB MTU models TU811, TU813, TU831, TU839, and TU851 with keying code AB.
How does voltage supervision function on the DI825 module?
Channel 1 supervises channels 2 through 4. Channel 8 supervises channels 5 through 7. Voltage loss triggers an error flag.
