Description
Product Overview
The ABB DSAO110 57120001-AT is a four-channel analog output module from the ABB Advant Master S100 I/O family. It is designed to provide isolated analog signals for industrial process-control applications, supporting both 0–10 V and 0–20 mA output ranges with a specified accuracy of 0.05%. The module is suitable for transmitting control signals to actuators, control valves, drives, and other field devices that require continuous analog regulation. ABB documentation also identifies the exchange number as EXC57120001-AT and notes that a newer DSAO 120A with DSTA 171 can replace the earlier DSAO 110 with DSTA 160, although field-wire reconnection is required.
Technical Specifications — DSAO110
| Parameter | Value |
|---|---|
| Product Model | DSAO110 |
| Manufacturer | ABB |
| Product ID | 57120001-AT |
| Product Type | Analog Output Module |
| Product Family | Advant Master S100 I/O |
| Output Channels | 4 |
| Output Signals | 0–10 V, 0–20 mA |
| Accuracy | 0.05% |
| Isolation | Isolated outputs |
| Power | System-dependent |
| Communication / Protocol | S100 I/O system bus |
| Mounting | S100 I/O rack / system-specific |
| Dimensions (HxWxD) | 18 × 225 × 209.7 mm |
| Net Weight | Approx. 0.595 kg |
| Typical Interfaces | Analog field-output wiring and system backplane |
| Compliance | Application dependent; ABB notes RoHS exemption for specified Advant Master applications |
The channel count, signal ranges, isolation, dimensions, and weight are based on ABB product information.

ABB DSAO110 57120001-AT
Key Features and Benefits — DSAO110
- Four independent analog output channels.
- Supports both voltage and current signal transmission.
- 0.05% specified accuracy for precision process-control applications.
- Isolated outputs help separate field signals from the control-system circuitry.
- Appropriate for legacy ABB Advant Master systems and S100 I/O maintenance.
- Useful for MRO spare inventories where exact hardware replacement is required.
Personally, I would verify the existing S100 I/O termination arrangement before approving a replacement. ABB specifically notes that the newer replacement combination requires wire reconnection, so assuming a simple plug-and-play swap could create unnecessary commissioning work.
Related Models
- DSAO 120A: Newer analog-output solution identified by ABB as a replacement path for the DSAO 110 when paired with DSTA 171.
- DSTA 160: Associated termination assembly used with the original DSAO 110 configuration.
- DSTA 171: Newer termination assembly used with the DSAO 120A replacement arrangement.
- DSAX 110: Related ABB S100 I/O analog input/output board with a different channel configuration.
Installation and Maintenance — DSAO110
Installation should be performed by qualified industrial automation personnel following the applicable ABB Advant Master maintenance procedure. Isolate the relevant system section, apply ESD protection, and verify the rack position, termination assembly, wiring polarity, signal range, and channel assignment before removing the existing module.
After installation, check each analog output independently and compare the commanded value with the measured field signal. For critical control loops, perform loop verification before returning the equipment to normal operation. Warehouse records should include the complete part number, revision, condition, inspection status, and compatible termination hardware.
Product Warranty — DSAO110
Warranty coverage depends on supplier condition and purchase terms. Confirm whether the unit is new, unused surplus, refurbished, or previously installed. For refurbished stock, request available functional-test or inspection records and document the agreed warranty period before shipment.
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