ABB DSAO120 57120001-EY Analog Output Module

ABB DSAO120 57120001-EY is an 8-channel analog output board belonging to ABB S100 I/O series for Advant OCS DCS system. It receives digital signals from the controller and converts them into standard current and voltage analog signals for field control devices.

Each channel features galvanic isolation to avoid ground loop interference. It supports multi-range signal output and built-in channel diagnostic function, which is a common spare part for upgrading and maintaining old ABB DCS cabinets.

Data Parameters

• 1. Brand: ABB.

• 2. Model: DSAO120, Part No:57120001-EY.

• 3. Product Type: 8-Channel Isolated Analog Output Board.

• 4. Application: ABB S100 I/O, Advant OCS distributed control system.

• 5. Feature: 8 independent channels, configurable current and voltage output.

• 6. Characteristic: Channel-to-channel isolation, 16-bit high resolution.

• 7. Communication: Compatible with S100 backplane bus and controller.

• 8. Package: I/O module card, matched with terminal base DSTA171.

• 9. Mounting: Installed on standard S100 I/O rack.

• 10. Operating Temperature: 0℃ ~ +60℃.

Core Functions

• 1. Convert digital control commands into 4-20mA, 0-20mA, 0-10V analog signals.

• 2. Drive regulating valves, frequency converters and other field actuators for loop control.

• 3. Isolate each channel to suppress electromagnetic interference and ground loop noise.

• 4. Real-time channel fault diagnosis and status indication for rapid troubleshooting.

• 5. Support hot swapping for non-stop replacement in redundant control cabinets.

Application Scenarios

• 1. Power plant ABB Advant OCS DCS boiler and turbine control cabinet.

• 2. Petrochemical continuous production process flow and pressure regulation control.

• 3. Pulp and paper mill old S100 DCS system renovation and spare replacement.

• 4. Oil & gas terminal automatic control analog output signal distribution.

• 5. Process industry S100 series analog output module spare inventory backup.

FAQ

• 1. Q: What is ABB DSAO120 57120001-EY?
      A: It is an 8-channel isolated analog output board for ABB S100 Advant OCS DCS.

• 2. Q: What terminal base does it need?
      A: It needs to be used together with DSTA171 terminal unit for field wiring.

• 3. Q: What is the difference between DSAO120 and DASO110?
      A: DASO110 is 4-channel, DSAO120 is upgraded 8-channel version with higher density.