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- ABB
- AX645
- Analog Mixed Module
- Sweden
- 100 mm × 140 mm × 55 mm
- 1.1kg
- 3BHB001914R1
- Xiamen, China
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ABB AX645 (3BHB001914R1) — Complete Product Documentation
Product Overview
The ABB AX645 (3BHB001914R1) is an industrial analog input/output (I/O) module designed for robust performance in automation and control systems. It provides reliable acquisition, conditioning, and delivery of analog signals between field devices and controllers. The module is engineered for applications where signal integrity, accuracy, and long‑term stability are critical.
The AX645 suits distributed control systems (DCS), programmable logic controllers (PLC), and data acquisition networks in manufacturing plants, process industries, and infrastructure systems. Its design focuses on industrial resilience, modular flexibility, and ease of integration.
In typical use, this module translates raw analog signals (voltage and current) from sensors and transmitters into digitally readable values for control logic, monitoring displays, and safety systems. With built‑in diagnostics and sturdy construction, AX645 is well suited for continuous operation in harsh industrial environments.
Brand and Product Series
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Brand: ABB
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Product Series: AX600 Series Analog I/O Modules
The AX600 series encompasses analog modules tailored for industrial automation. Modules in this series vary in channel count, input/output combinations, and performance capabilities, allowing system designers to select configurations that match processing requirements and cabinet space constraints. All AX600 modules are intended for modular rack or DIN rail integration.
Product Introduction
The AX645 module functions as a mixed analog input/output unit, supporting multiple channels for simultaneous analog signal processing. It accepts standard voltage and current inputs, converts them to digital values, and outputs conditioned signals where necessary. Its internal circuitry provides signal filtering and electrical isolation, improving measurement reliability and reducing noise interference from external sources.
AX645 is engineered for industrial reliability, with a durable housing, stable connectors, and temperature‑resilient components. LED indicators offer visual feedback on module health and channel states, aiding maintenance and diagnostics.
Applications
Process Control Systems
AX645 is used to monitor and control continuous processes such as chemical reactions, temperature regulation, and flow management by capturing analog data from field sensors.
Manufacturing Automation
In automated production lines, the module acquires real‑time signals from machinery and instrumentation to support precision control, quality assurance, and performance feedback.
Energy and Power Monitoring
AX645 gathers analog feedback from electrical measurement devices such as voltage and current transducers in energy systems for monitoring performance and triggering safety logic.
Building and Infrastructure Management
The module supports environmental monitoring, HVAC control, and infrastructure automation by interfacing with analog sensors in large facilities.
Test and Measurement Systems
Used in laboratory environments and test benches to collect multiple analog signals simultaneously during product testing, research trials, or condition monitoring tasks.
Product Advantages
Multi‑Channel Support
AX645 provides multiple analog channels on both input and output, enabling efficient signal acquisition and control within one module.
Precision and Stability
With high‑resolution conversion and careful signal conditioning, the module ensures reliable measurement accuracy.
Industrial Durability
Built for long‑term operation in electrically noisy and temperature‑variable industrial environments.
Modular Design
Compatible with standardized modular racks and DIN rail systems for flexible installation and easy maintenance.
Diagnostic Visibility
LED indicators for power and channel status simplify troubleshooting and reduce downtime.
Technical Specifications
| Specification | Details |
|---|---|
| Model | AX645 (3BHB001914R1) |
| Module Type | Analog Input/Output Module |
| Input Channels | 16 analog input channels |
| Output Channels | 8 analog output channels |
| Input Signal Types | Voltage: ±10 V, 0–10 V; Current: 4–20 mA, 0–20 mA |
| Output Signal Types | Voltage: 0–10 V; Current: 4–20 mA |
| Resolution | 16‑bit |
| Sampling Time | ~20 ms per input channel |
| Accuracy | ±0.1% of full scale |
| Power Consumption | 6.5 W |
| Operating Temperature | –20°C to +60°C |
| Storage Temperature | –40°C to +85°C |
| Isolation | Channel‑to‑system isolation |
| Dimensions (H×W×D) | 100 mm × 140 mm × 55 mm |
| Weight (kg) | 1.10 kg |
| Mounting Method | DIN rail / Modular rack |
| Status Indicators | Power and channel LEDs |
Related Models — Same Series or Similar Function
| Model | Input Channels | Output Channels | Resolution | Power (W) | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|---|
| AX611 | 8 | 4 | 16‑bit | 4.0 | 100 × 130 × 45 | 0.85 |
| AX615 | 8 | 8 | 16‑bit | 4.5 | 100 × 130 × 50 | 0.90 |
| AX620 | 16 | 4 | 16‑bit | 5.5 | 100 × 130 × 50 | 0.95 |
| AX621 | 16 | 8 | 16‑bit | 6.0 | 100 × 130 × 50 | 1.00 |
| AX650 | 32 | 8 | 16‑bit | 7.5 | 120 × 140 × 60 | 1.20 |
Other Popular Models — Same Brand
| Model | Function | Channels/Outputs | Resolution/Type | Power (W) | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|---|
| DI810 | Digital Input Module | 16 digital inputs | Digital | 2.0 | 90 × 120 × 25 | 0.32 |
| DO810 | Digital Output Module | 16 digital outputs | Digital | 2.0 | 90 × 120 × 25 | 0.33 |
| AO820 | Analog Output Module | 16 analog outputs | 16‑bit | 3.0 | 90 × 120 × 40 | 0.50 |
| AI880 | Analog Input Extended Range | 8 input channels | 16‑bit | 2.0 | 90 × 120 × 30 | 0.35 |
| CI840 | Communication Interface Module | Network interface | Fieldbus / Ethernet | 3.5 | 90 × 120 × 40 | 0.60 |
Frequently Asked Questions (FAQ)
Q1: What types of signals can the AX645 handle?
A1: The AX645 supports both voltage and current analog signals, including ±10 V and 0–10 V for voltage, and 4–20 mA or 0–20 mA for current.
Q2: How many analog input channels does the AX645 module have?
A2: It has 16 analog input channels.
Q3: How many analog output channels does the AX645 provide?
A3: The module provides 8 analog output channels.
Q4: What is the resolution of the AX645 module?
A4: The AX645 has a 16‑bit resolution for accurate signal conversion.
Q5: What is the operating temperature range for the AX645?
A5: The module operates within –20°C to +60°C.
Q6: What is the approximate weight of the AX645?
A6: The AX645 weighs about 1.10 kg.
Q7: Can the AX645 be mounted on a DIN rail?
A7: Yes, it supports installation on both DIN rail and modular rack platforms.
Q8: Does the AX645 module provide diagnostic indicators?
A8: Yes, the module includes LED indicators for power and channel status to aid in monitoring and troubleshooting.
Q9: What is the power consumption of the AX645 module?
A9: Typical power consumption is approximately 6.5 watts.
Q10: Can the AX645 be used in large, scalable automation systems?
A10: Yes, its modular design and compatibility with other AX600 series modules make it suitable for scalable systems.