Description
Overview
The ABB IMDER02 is a high-integrity digital signal monitoring module designed for Bailey INFI 90 and Net 90 distributed control systems. It is engineered to supervise field digital inputs, identify abnormal signal behavior, and record precise event timing for diagnostic and sequence analysis.
This module is widely deployed in safety-critical environments where accurate detection of signal transitions and system anomalies is required for operational integrity and process reliability.
Core Functionality
The IMDER02 continuously scans up to 16 digital input channels, evaluating signal transitions in real time. It identifies irregular conditions such as contact bounce, signal chatter, stuck-on/off states, and invalid transitions.
In addition, it supports Sequence-of-Events (SOE) recording, enabling detailed reconstruction of process events with millisecond-level timestamp accuracy.
Technical Specifications
| Parameter |
Specification |
| Brand |
ABB |
| Model |
IMDER02 |
| Product Type |
Digital Error Detection & SOE Module |
| System Compatibility |
Bailey INFI 90 / Net 90 |
| Digital Input Channels |
16 Channels |
| Input Signal Type |
Dry contact or voltage-based digital signals |
| Logic Levels |
ON: ~24 VDC / OFF: 0–5 VDC |
| Event Detection Modes |
Rising edge, falling edge, or both |
| Signal Conditioning |
Hardware + software debounce filtering |
| Timestamp Resolution |
1 ms |
| SOE Event Buffer |
256–512 events (configuration dependent) |
| Fault Detection |
Bounce, chatter, stuck signal conditions, invalid transitions |
| Isolation Type |
Channel-to-channel and channel-to-bus |
| EMI Protection |
Industrial-grade electromagnetic compatibility |
| Power Supply |
Supplied via INFI 90 rack backplane |
| Mounting Type |
INFI 90 I/O rack slot |
| 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 |
| Weight |
1.2 kg |
System Role
Within ABB INFI 90 architectures, the IMDER02 functions as a diagnostic and event capture module. It enhances system visibility by providing precise digital signal analysis and detailed fault logging, supporting both operational monitoring and post-event investigation.
It communicates directly with system controllers such as IMMFP, IMCPM, and IMHSS, ensuring synchronized event reporting across the control network.
Industrial Applications
The module is typically used in environments requiring high-reliability digital monitoring, including:
-
Power generation control systems
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Petrochemical process facilities
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Turbine and compressor monitoring systems
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Safety interlock and protection circuits
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Industrial automation diagnostics
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Event recording and fault analysis systems
Engineering Characteristics
The IMDER02 is designed for high-noise industrial environments where signal integrity is critical. Its dual-layer filtering and isolation architecture ensures reliable detection even under electrical interference or unstable contact conditions.
FAQ
What is the main purpose of the IMDER02 module?
The IMDER02 is used to detect, validate, and record digital signal transitions and anomalies within ABB INFI 90 systems.
Does it support event timestamping?
Yes. The module provides Sequence-of-Events recording with 1 ms timestamp resolution.
What types of signal faults can it detect?
It can identify bounce conditions, stuck signals, invalid transitions, and signal noise or chatter.
Is the module suitable for safety systems?
Yes. It is commonly used in critical monitoring and diagnostic applications requiring high signal integrity.
