Description
Product Overview
The ABB DSAO120AK01 3BSE020419R1 is an eight-channel analog output kit in ABB’s S100 I/O family. It supplies analog control signals from a compatible control system to field equipment that requires a continuously variable command rather than a simple on/off state. Typical applications for analog output hardware include regulating valve positioners, actuator interfaces, and other process-control devices, provided the signal type and electrical requirements match the installed configuration. ABB product records identify this kit as an 8-channel, 12-bit analog output assembly.
The kit is associated with legacy ABB control-system environments, including Advant OCS and supported S100 I/O installations used with Advant Controller 450, AC 460, MasterPiece controllers, and 800xA systems. That makes the DSAO120AK01 relevant to maintenance teams preserving existing control hardware where replacing an established I/O assembly may be preferable to redesigning the cabinet and application. Compatibility still needs to be checked against the installed controller, I/O hardware, termination unit, and engineering configuration.
The part number matters when sourcing a replacement. ABB’s product records associate 3BSE020419R1 with DSAO120AK01 and identify related kit references, including 3BUR002096R1. Those catalog relationships are useful for procurement cross-checks, but they do not establish that every related part can be substituted without engineering review. Before ordering the ABB DSAO120AK01 3BSE020419R1, confirm the existing module label, required output signal, termination hardware, and system documentation. The available references confirm channel count and resolution; they do not, by themselves, establish every output range, isolation characteristic, or environmental rating for the supplied kit.
Product Introduction
Legacy process-control systems often depend on specific analog output assemblies to maintain existing control loops. The ABB DSAO120AK01 3BSE020419R1 provides eight 12-bit analog output channels for compatible S100 I/O installations. The documented assembly includes the DSAO 120A board, DSTA 171 connection unit, and DSTK 221 cable.
Before replacement, verify the required signal range, wiring, and termination components against the original installation. These checks are particularly important when a control loop drives a valve positioner or another actuator whose response affects the process.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | ABB |
| Model | DSAO120AK01 |
| Part Number | 3BSE020419R1 |
| Product Type | Analog output kit |
| I/O Family | S100 I/O |
| Number of Channels | 8 |
| Resolution | 12 bits, including sign for the DSAO 120A board |
| Output Signal Range | 0 to ±10 V or 0 to ±20 mA |
| Connection Unit | DSTA 171 |
| Cable Assembly | DSTK 221 |
| Current-Signal Load | Up to 600 Ω, per DSAO 120A documentation |
| Voltage-Signal Load | At least 1,000 Ω, per DSAO 120A documentation |
| Isolation | Channel-to-channel and channel-to-system isolation documented for DSAO 120A |
| Compatible System Family | ABB Advant OCS / S100 I/O in supported configurations |
| Operating Temperature | Verify against the applicable system manual |
| Condition | Confirm stock status and inspection records |
The signal ranges and load limits are taken from documentation for the DSAO 120A board used in the kit. Confirm the exact hardware configuration and applicable manual revision before applying these limits to a particular installation.
DSAO120AK01 3BSE020419R1
Related Products
- DSAO 120A — 3BSE018293R1: Related eight-channel analog output board; verify whether the complete kit or board alone is required.
- DSTA 171 — 3BSE018311R1: Connection unit associated with the kit.
- DSTK 221: Cable assembly used to connect the analog output board and connection unit; confirm the exact ordering code before sourcing.
- DSAO 110 — 57120001-AT: Four-channel analog output board; different channel count and connection arrangement.
- DSAO 130A — 3BSE020420R1: Related 16-channel analog output kit with a different channel count and output configuration.
- DSAO 120K06 — 3BSE019917R1: Related eight-channel analog output kit; verify isolation and wiring requirements.
- DSAO 120K07 — 3BSE019938R1: Related analog output kit variant; do not assume interchangeability.
- DSAI 130 — S100 I/O family: Analog input family for acquiring process signals rather than driving field devices.
Related part numbers are useful for comparing hardware, but the correct replacement must match the installed signal range, wiring, and system configuration.
Frequently Asked Questions
Q1. Is ABB 3BSE020419R1 an analog input or analog output module?
It is an analog output kit. It converts controller commands into analog electrical signals used by compatible field devices. An analog input module performs the opposite role by acquiring signals from field instruments.
Q2. Does this kit support 4–20 mA signals?
The DSAO 120A documentation specifies a range of 0 to ±20 mA, as well as 0 to ±10 V. A 4–20 mA application should be checked against the system configuration and engineering settings rather than assumed from the general output range alone.
Q3. What components should be included with the kit?
The documented assembly comprises the DSAO 120A analog output board, DSTA 171 connection unit, and DSTK 221 cable. Verify the supplier’s exact package contents because a listing may refer to a complete kit or an individual component.
Q4. Can I hot-swap the while the plant is running?
Do not assume hot replacement is permitted. The answer depends on the installed I/O architecture, the control strategy, and the approved maintenance procedure. Place affected loops in the required safe state and follow site isolation procedures before removing or inserting hardware.
Q5. Does the replacement require firmware or application changes?
Not necessarily, but the existing engineering configuration must be reviewed. Confirm module recognition, channel assignments, output scaling, and the behavior of each affected loop. A hardware replacement should not be considered complete until the output has been verified against the field device.
Q6. How should I verify the condition of a new-surplus unit?
Ask for photographs of the actual unit, identification labels, and any available inspection or functional-test records. Confirm whether the connection unit and cable are included. New surplus does not automatically mean factory-sealed, and a visual inspection alone cannot verify analog output performance.
Q7. Is interchangeable with other DSAO 120 variants?
Not without checking the technical documentation. Variants may differ in isolation, signal configuration, included components, or connection requirements. Compare the complete part number and the installed wiring arrangement before approving a substitute.
