Description
57120001-FGDSAO130: Product Overview
This module operates as an I/O node within ABB 800xA distributed control systems (DCS), positioned in the signal output layer between the controller and field actuators (e.g., control valves, variable frequency drives). Its role is to translate digital setpoints from the DCS into standardized analog signals (4-20mA, 0-10V) for precise process control, while enabling bidirectional HART communication for device configuration and diagnostics.
Core functionality includes generating stable analog outputs with ±0.1% accuracy, processing HART protocol data superimposed on the 4-20mA signal, and providing galvanic isolation (2.5kV RMS) between the DCS backplane and field circuits to protect against ground loops and transients. It supports channel-level diagnostics (e.g., output short-circuit, wire break) and integrates with ABB’s Asset Management tools for remote monitoring.
The module belongs to the ABB 800xA DCS I/O Series, a platform designed for modular expansion and mixed-signal integration. Benefits include hot-swappable components for minimal downtime, compatibility with ABB’s S800 I/O carriers, and adherence to IEC 61131-2 standards for signal consistency. This series streamlines system upgrades by allowing incremental addition of I/O modules without reconfiguring the entire DCS.
ABB 57120001-FGDSAO130
57120001-FGDSAO130: Technical Specifications
-
Model Number: 57120001-FGDSAO130
-
Manufacturer: ABB Ltd.
-
Product Type: Analog Output Module
-
Number of Channels: 8 (isolated analog outputs)
-
Output Signal Types: 4-20mA (active/passive), 0-10V DC
-
Accuracy: ±0.1% of full scale (at 25°C)
-
Resolution: 16-bit DAC (digital-to-analog converter)
-
HART Support: HART 7 protocol (superimposed on 4-20mA)
-
Isolation Voltage: 2.5kV RMS (channel-to-backplane, channel-to-channel)
-
Power Consumption: 3W (max per module)
-
Operating Temperature: -25°C to +60°C
-
Protection Rating: IP20 (enclosure)
-
Dimensions: 110mm (H) x 35mm (W) x 120mm (D)
-
Weight: ~0.4kg
-
Certifications: CE, UL (cULus Listed), RoHS, ATEX Zone 2 (optional)
Core Features & Customer Value
The 16-bit DAC resolution ensures fine-grained control of analog outputs, critical for applications like pH control in chemical reactors where ±0.1% accuracy prevents process drift. For engineers, this translates to tighter control loops and reduced deviation from setpoints. The HART 7 support enables remote configuration of field instruments (e.g., valve positioners) and retrieval of diagnostic data (e.g., stem friction, coil resistance) without interrupting the 4-20mA signal, saving field service trips.
Galvanic isolation (2.5kV RMS) protects the DCS backplane from voltage transients generated by inductive loads (e.g., motor-operated valves), minimizing the risk of controller damage. For maintenance teams, channel-level diagnostics (via ABB 800xA System Alarm Manager) pinpoint faulty outputs (e.g., “output 3 short-circuit”), reducing mean time to repair (MTTR). The hot-swappable design allows module replacement during system operation, essential for 24/7 facilities like power plants.
The module’s compact form factor (35mm width) maximizes I/O density on S800 carriers, supporting up to 16 modules per rack. This scalability reduces cabinet space requirements in brownfield expansions, where panel real estate is often constrained. Compatibility with ABB’s legacy DCS platforms (e.g., INFI-90) via gateway modules ensures phased migration without full system replacement.
ABB 57120001-FGDSAO130
Typical Applications
In a chemical distillation column, the module controls 8 control valves regulating reflux and product draw-off flows. The 4-20mA outputs adjust valve positions based on temperature/pressure setpoints, while HART diagnostics monitor valve health to predict packing wear.
At a municipal water treatment plant, it drives 8 variable frequency drives (VFDs) for pump speed control, with 0-10V outputs adjusting flow rates. The isolation feature protects the DCS from transients induced by pump startups.
In an oil refinery hydrocracker, the module interfaces with 8 hydrogen flow control valves, using HART to calibrate valve trim and log cycle counts. The -25°C cold-start capability ensures operation in outdoor instrument shelters.
