Overview
The ABB CBI 20 is a high-density binary input module designed for the H&B Freelance 2000 control system. It offers reliable, real-time digital signal acquisition with 32 independent input channels, making it ideal for applications that demand fast and precise monitoring of discrete field devices. Developed by ABB, a trusted name in industrial automation, this module supports multiple voltage levels and includes built-in isolation and diagnostics for robust, safe operation.
Engineers choose the CBI 20 when they need compact signal interface capability inside control cabinets. Thanks to its DIN-rail mounting and modular design, it integrates smoothly into existing Freelance 2000 racks. Furthermore, its configurable filtering and galvanic isolation help prevent noise issues and improve system stability. For long-term installations, the module’s durable design delivers consistent performance throughout continuous operation.
Specification
| Technical Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Model Number | CBI 20 |
| System Platform | Freelance 2000 |
| Module Type | Binary Input Module |
| Number of Channels | 32 digital inputs |
| Supported Input Voltages | 48 V DC, 24 V DC, NAMUR (8.2 V) |
| Input Types | Contacts, 3-/4-wire proximity switches, NAMUR sensors |
| Input Sampling | Approx. 1 ms time resolution |
| Isolation | Central galvanic isolation |
| System Supply Voltage | 20 – 33 V DC |
| Power Dissipation | Approximately 4.8 W (NAMUR) to 7.9 W (48 V contacts) |
| Operating Temperature | 0 °C to +50 °C |
| Mounting | DIN-rail or slot-based rack installation |
| Dimensions | 40.6 mm × 311 mm × 160 mm |
| Weight | Approx. 0.6 kg |
| Typical Use | Discrete signal acquisition and event monitoring |
FAQ
Q1: How many input channels are available on the CBI 20?
The module offers 32 discrete input channels for dense signal acquisition.
Q2: What types of sensors can be connected?
It supports contact inputs, proximity switches, and NAMUR-compliant sensors.
Q3: Does the module provide galvanic isolation?
Yes, it includes centralized galvanic isolation to enhance safety and signal integrity.
Q4: What is the operating temperature range?
The typical range is 0 °C to +50 °C when mounted in a ventilated control rack.
Q5: Is the module suitable for fast event detection?
Yes, its sampling time of roughly one millisecond supports event-driven sequences.
Manual/Datasheet PDF
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