Description
Product Overview
The ABB IMASO11 (IMAS011) is a multi-channel analog output module designed for the ABB Bailey INFI-90 distributed control platform. It functions as a signal generation interface between the control system and field actuators, delivering precise analog signals used in closed-loop process regulation.
This module is typically deployed in legacy INFI-90 architectures where reliable analog control of valves, drives, and process instruments is required. It supports both voltage and current output formats, allowing flexible integration with a wide range of industrial devices.
Technical Specifications
| Category |
Specification |
| Model |
IMASO11 (IMAS011) |
| System Platform |
ABB Bailey INFI-90 |
| Module Type |
Analog Output Slave Module |
| Output Channels |
14 independent analog outputs |
| Output Signals |
1–5 VDC, 4–20 mA |
| DAC Resolution |
10-bit digital-to-analog conversion |
| Output Accuracy |
Voltage: ≤ ±0.15% |
| Output Load |
Current mode: ≤ 750 Ω |
| Current Rating |
50 mA nominal with short-circuit protection |
| Power Supply |
+5 VDC, +15 VDC, -15 VDC, +24 VDC rails |
| Power Consumption |
Approx. 13 W total (multi-rail combined) |
| +5 V Consumption |
~1.5 W |
| +15 V Consumption |
~2 W |
| -15 V Consumption |
~1.75 W |
| +24 V Consumption |
~8 W |
| Operating Temperature |
0°C to +70°C |
| Storage Temperature |
-40°C to +85°C |
| Humidity Range |
Up to 95% non-condensing |
| Channel Isolation |
Galvanic isolation between system and field outputs |
| Rack Occupancy |
Single INFI-90 standard slot |
| Dimensions |
271.78 × 358.14 × 73.66 mm |
| Weight |
0.612 kg |
| Origin |
Sweden (typical production source) |
| Maintenance Feature |
Output readback and diagnostics support |
Functional Characteristics
The module provides stable analog signal generation for process control applications requiring continuous modulation. Each channel is independently controlled, allowing simultaneous regulation of multiple loops within a distributed control environment.
Integrated protection functions limit output current and safeguard against short-circuit conditions, improving system reliability in demanding industrial installations. Output readback capability enables real-time verification of signal integrity.
System Integration
The IMASO11 operates within the ABB Bailey INFI-90 rack architecture as a dedicated output slave node. It receives digital control instructions from the main processor and converts them into analog signals for field-level execution.
It is commonly used in conjunction with analog input modules and control processors to form complete closed-loop control systems.
Typical Applications
Boiler and turbine control in power generation systems
Flow, pressure, and temperature regulation in process plants
Valve and actuator positioning in petrochemical units
Water treatment dosing and control systems
Continuous manufacturing process control loops
FAQ
Q1: What output types are supported?
It supports both 1–5 VDC voltage outputs and 4–20 mA current outputs depending on configuration.
Q2: How many channels are available?
The module provides 14 independent analog output channels.
Q3: Does it support protection features?
Yes, it includes short-circuit protection and output current limiting to enhance operational safety.
