Description
Overview
The ABB IIMKM02A is an analog signal acquisition module designed for Bailey INFI 90 and Net 90 distributed control systems. It functions as a precision interface between field instrumentation and system processors, translating analog process signals into digital data for controllers such as IMMFP and IMCPM.
This module is widely deployed in continuous process industries where stable measurement, electrical isolation, and long-term signal accuracy are required.
Although discontinued by the manufacturer, it remains in service for legacy system maintenance and replacement applications.
Core Functionality
The IIMKM02A processes multiple analog inputs simultaneously and conditions incoming field signals before transmission to the INFI 90 backplane. It is designed to ensure consistent measurement performance even in electrically noisy environments.
Key operational characteristics include high input resolution, isolation protection, and diagnostic capability for module health monitoring.
Technical Specifications
| Parameter |
Specification |
| Brand |
ABB |
| Model |
IIMKM02A |
| Product Type |
Analog Input Module (PC Board) |
| System Compatibility |
Bailey INFI 90 / Net 90 |
| Status |
Discontinued |
| Input Channels |
8 Analog Input Channels |
| Supported Signal Types |
4–20 mA, 0–20 mA, 1–5 V, 0–5 V |
| Input Configuration |
Differential high-impedance inputs |
| Resolution |
12-bit to 16-bit (system dependent) |
| Measurement Accuracy |
±0.1% Full Scale |
| Power Supply |
Provided via INFI 90 I/O rack |
| Isolation Type |
Channel-to-channel and channel-to-bus |
| EMI Protection |
Industrial-grade noise immunity design |
| Self Diagnostics |
Supported |
| Hot Swap Capability |
Supported in compatible racks |
| Operating Temperature |
0°C to +60°C |
| Storage Temperature |
-40°C to +85°C |
| Humidity Range |
5–95% RH non-condensing |
| Dimensions |
350 × 260 × 70 mm |
| Net Weight |
1.2 kg |
| Mounting Type |
INFI 90 I/O Rack Slot |
System Integration
The IIMKM02A is compatible with multiple ABB INFI 90 system controllers including IMMFP, IMCPM, IMASI, and IMAMM series processors. It is designed to integrate seamlessly into the system backplane architecture, ensuring stable analog data transfer across distributed control environments.
Industrial Applications
Typical use cases include:
-
Power generation monitoring systems
-
Petrochemical process control
-
Refinery instrumentation systems
-
Industrial automation networks
-
Legacy ABB INFI 90 system maintenance
-
Continuous process measurement applications
Engineering Characteristics
The module is engineered for long-term stability in harsh environments. Its isolation design reduces ground loop interference, while its high-resolution conversion ensures accurate analog signal representation over extended operating cycles.
FAQ
What is the main function of the IIMKM02A module?
The IIMKM02A is used to convert analog field signals into digital data for ABB INFI 90 control processors.
Is the module still manufactured?
No. The IIMKM02A has been discontinued but remains widely used in installed legacy systems.
What types of signals does it support?
It supports standard industrial analog signals including 4–20 mA, 0–20 mA, 1–5 V, and 0–5 V.
Can it be hot-swapped?
Yes. In compatible INFI 90 racks, the module supports hot-swap replacement.
