The ABB AO895 (3BSC690087R1) is an 8-channel analog output module from the S800 I/O system, designed for the System 800xA DCS and AC 800M controller platform. Each channel provides a 4...20 mA output with integrated Intrinsic Safety (IS) protection components and a HART interface, allowing direct connection to field devices in hazardous areas without requiring external isolators or safety barriers.
Item No :
AO895 3BSC690087R1Order(MOQ) :
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EXWProduct Origin :
SwedenShipping Port :
WuhanLead Time :
3-5daysWeight :
3kg| Specification | Description |
|---|---|
| Manufacturer | ABB |
| Model | AO895 |
| Article Number | 3BSC690087R1 |
| Product Family | S800 I/O System |
| Platform Compatibility | System 800xA DCS, AC 800M controllers, and third-party controllers via fieldbus |
| Product Type | Intrinsically Safe Analog Output Module |
| Channels | 8 x 4...20 mA (unipolar single-ended) |
| HART Support | Yes (pass-through communication on each channel) |
| Intrinsic Safety | Yes – integrated energy-limiting barriers for connection to Zone 0/1/2 hazardous areas |
| Resolution | 12-bit |
| Under/Over Range | 2.5 / 22.4 mA |
| Output Load | <725 Ω @ 20 mA (no over-range); <625 Ω @ up to 22 mA |
| Error (Accuracy) | Typ. 0.05%, Max. 0.1% @ 650 Ω |
| Temperature Drift | Typ. 50 ppm/°C, Max. 100 ppm/°C |
| Rise Time | 30 ms (10% to 90%) |
| Output Protection | Short-circuit proof, current limited output |
| Isolation | Groupwise isolated (8 channels together) from ModuleBus and ground |
| Rated Insulation Voltage | 50 V |
| Dielectric Test Voltage | 500 V AC |
| Power Dissipation | 4.25 W |
| Current Consumption (+5V ModuleBus) | Typ. 130 mA |
| Current Consumption (+24V External) | Typ. 250 mA, Max. <330 mA |
| Diagnostic LEDs | F (Fault), R (Run), W (Warning), O (SP), Tx (HART Communication) |
| Supervision | Internal process supply monitoring; open wire detection if >1 mA is set |
| Operating Temperature | 0°C to +55°C (vertical mounting in compact MTU: 40°C) |
| Storage Temperature | -40°C to +70°C |
| Protection Class | IP20 (IEC 60529) |
| Corrosion Protection | ISA-S71.04: G3 |
| Compatible MTUs | TU890, TU891, TU891Z |
| Keying Code | AF |
| Dimensions (W x H x D) | 45 mm x 119 mm x 102 mm |
| Weight | Approx. 0.2 kg |
| Redundancy | Not supported (non-redundant) |
| High Integrity (SIL) | No (standard module) |
| Model | Description | Typical Application |
|---|---|---|
| AO810V2 | 8-channel analog output, 0/4...20 mA (non-IS, non-HART), updated version | Standard non-hazardous analog output applications |
| AO815 | 8-channel analog output, 4...20 mA with HART (non-IS) | HART communication without intrinsic safety requirement |
| AO820 | 8-channel analog output, ±10 V (voltage output) | Applications requiring voltage rather than current signals |
| AO845A | 8-channel analog output, 4...20 mA with HART and redundancy support | High-availability systems with redundancy requirement |
| AO890 | 8-channel analog output with HART and SIL certification (High Integrity) | Safety-critical (SIL3) applications |
| AI895 | 8-channel analog input, intrinsically safe with HART | Input counterpart for AO895 in hazardous area I/O sets |
| TU890 / TU891 | Module Termination Units (MTUs) for AO895 | Required mounting base for field wiring connection |
| TU891Z | MTU with intrinsic safety zone separation | Hazardous area applications requiring additional zone separation |
| 3BHE046836R0102 | 3BHE013088R001 | 3BHE014135R0011 |
| 3BHE027632R0101 | 3BHE014070R0101 | 3BHE037864R0108 |
| 3BSE082896R1 PM858K02 | 3BHE030579R0003 | 3BHE041626R0101 |
| 3BHE009681R0101 5SHY4045L0001 | 3BHE024747R0101 | 3BHE032025R1101 |
| 3BHE030579R0003 | 3BHE024855R0101 | 3BHE024313R0101 |
| 3BHB003041R0101 | 3BHE032025R1101 | 3BHE008128R0001 |
| 3BHB004661R0101 | 3BHE021887R0101 | 3BSE050091R65 |
| 3BHB018162 | 3BHE024577R0101 | 3BHE009319R0001 |
| 3BHB003041R0101 UFC719AE01 | 3BHB003041R0101 | 3BHE020455R0001 |
| 3BSE042238R2 PP846A | 3BHE022293R0101 | 3BHE025088R6618 |
Q1: Which ABB control systems is the AO895 compatible with?
The AO895 is part of the S800 I/O system and is designed for ABB System 800xA DCS and AC 800M controllers. It can also communicate with third-party controllers via standard fieldbus connections, making it a flexible solution for various distributed control architectures.
Q2: What does "Intrinsic Safety" mean for this module?
The AO895 has built-in energy-limiting barriers on each channel, meaning it can directly connect to field devices located in hazardous (explosive) areas (Zone 0/1/2) without requiring external safety isolators or barriers. This reduces installation complexity, cabinet space, and overall cost.
Q3: Does the AO895 support HART communication?
Yes. Each of the 8 output channels features a HART pass-through interface, enabling two-way digital communication for remote configuration, calibration, and asset management of smart field instruments such as positioners and actuators.
Q4: What is the maximum load resistance the AO895 can drive?
At 20 mA (normal range): Maximum load is 725 Ω.
At 22 mA (over-range): Maximum load is 625 Ω.
This allows the module to drive most Ex-certified current-to-pressure (I/P) converters and actuators on the market.
Q5: Is the AO895 suitable for SIL-rated (safety) applications?
No. The AO895 is a standard module and is not classified as "High Integrity" or SIL-rated. For safety-critical applications requiring SIL3, ABB offers the AO890 module, which is certified for high-integrity use.
The ABB DO880 (3BSE028602R1) is a 16-channel high-integrity digital output module from the S800 I/O system, designed for ABB System 800xA DCS, AC 800M, and Symphony Plus controllers.
The ABB AO820 (3BSE008546R1) is a 4-channel bipolar analog output module from the S800 I/O system, designed for ABB System 800xA DCS and AC 800M controllers.The module features individual galvanic isolation per channel and built-in diagnostics, making it a reliable solution for precision control in demanding industrial environments including chemical, oil & gas, and pharmaceutical applications.
The ABB AO890 (3BSC690072R1) is an 8-channel intrinsically safe analog output module from the S800 I/O system, designed for ABB System 800xA DCS and AC 800M controllers. The module features integrated intrinsic safety (Ex ia) protection components on each channel, allowing direct connection to process equipment in hazardous areas (Zone 0/1/2) without requiring external safety barriers.
The ABB AO845 (3BSE023676R1) is an 8-channel analog output module from the S800 I/O system, designed for ABB System 800xA DCS and AC 800M controllers. It provides 4...20 mA current signals to control field actuators such as valves, positioners, and variable speed drives.
The ABB AO845A (3BSE045584R1) is an 8-channel analog output module from the S800 I/O system, designed for ABB System 800xA DCS and AC 800M controllers. It provides 4...20 mA current signals to control field actuators such as valves, positioners, and variable speed drives, while integrated HART pass-through enables two-way digital communication with smart field instruments.
The ABB AO815 (3BSE052605R1) is an 8-channel analog output module from the S800 I/O system, designed for ABB System 800xA DCS and AC 800M controllers. It provides 4...20 mA current signals to control field actuators such as valves, positioners, and variable speed drives, while integrated HART pass-through enables two-way digital communication with smart field instruments.
The ABB AO801 (3BSE020514R1) is an 8-channel analog output module from the S800L I/O system, designed for ABB System 800xA DCS and AC 800M controllers. It provides precise 0...20 mA or 4...20 mA current signals to control field actuators such as regulating valves, positioners, and variable speed drives in process automation applications.
The ABB AO815-eA (3BSE052605R2) is an 8-channel analog output module from the S800 I/O system, designed for the System 800xA DCS and AC 800M controller platform. Each channel provides 4...20 mA (or configurable 0...20 mA) output with HART pass-through communication, enabling seamless integration with smart field instruments such as positioners, valves, and actuators.
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