Overview
The ABB AO845A is a high-performance analog output module designed for ABB’s System 800xA and S800 I/O platforms. It provides eight unipolar analog output channels, each capable of delivering 4–20 mA current signals, which are commonly used in industrial automation systems to control actuators, valves, and other field devices.
This module is suitable for both single and redundant configurations, making it ideal for critical process environments where uptime and reliability are essential. It features cyclical self-diagnostics that monitor both internal and external conditions, such as open circuits, short circuits, output transistor faults, and power supply issues, ensuring early detection of failures and simplifying maintenance.
The AO845A supports hot swapping, allowing engineers to replace the module without needing to shut down the system, which is particularly valuable in continuous process industries such as oil & gas, power generation, and chemical manufacturing.
Technical Data / Specifications
| Parameter | Specification |
|---|---|
| Model | AO845A |
| Operating Temperature | –20°C to +55°C |
| Dimensions (H × W × D) | 186 mm × 59 mm × 127 mm |
Typical Applications / System Integration
The AO845A is widely used in distributed control systems (DCS) and programmable automation controllers (PACs) where precise analog control is required. Its typical applications include:
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Oil & Gas: Controls valve actuators and flow regulators in both upstream and downstream operations.
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Power Generation: Sends control signals to turbines, boilers, and auxiliary systems.
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Chemical Processing: Regulates dosing pumps, mixers, and temperature control loops.
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Water & Wastewater: Manages flow control and chemical injection systems.
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Pharmaceuticals: Supports batch control and environmental monitoring systems.
With its redundancy support and diagnostic features, the AO845A is perfect for mission-critical applications where reliability and safety are paramount.
FAQ
Q: What type of signal does the AO845A output?
A: It outputs 4–20 mA unipolar current signals.
Q: Can it be used in redundant systems?
A: Yes, it supports both single and redundant configurations.
Q: Does it support hot swapping?
A: Yes, the module can be replaced without shutting down the system.
Q: What diagnostics are included?
A: The module detects open circuits, short circuits, output transistor faults, and internal errors.
Q: What systems is it compatible with?
A: The AO845A is compatible with ABB System 800xA and S800 I/O platforms.
| Quick Quotes | Receive price & availability FAST from our dedicated customer service team. |
|---|---|
| Delivery | Expedited, Freight, And International Shipping Available. |
| Condition | 100% New with Original Package |
| Payment | We accept American Express, Discover, MasterCard, PayPal, and Visa. Our site is secured by RapidSSL. |
| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
| Q: Is Our Pricing Competitive? |
| A: Yes, we collaborate with over 50 countries worldwide. As a top supplier in China, we offer significant discounts based on market trends. |
| Q: What Is the Warranty Period? |
| A: All our new and original products come with a standard one-year warranty. |
| Q: What Payment Methods Do We Accept? |
| A: We require 100% T/T (Telegraphic Transfer) payment before shipping. For items with a lead time, a 30% deposit is needed upfront, and the remaining 70% is due before shipping. If you have a representative in China, you can arrange an RMB transfer through them. |
| Q: What Shipping Methods Do We Use? |
| A: We primarily use FedEx, DHL, UPS, and BRE for shipping. If you have an account with any of these carriers, you can handle shipping directly. We also offer free shipping to China-based freight forwarders. |
| Q: What Is Our Delivery Time? |
| A: Delivery usually takes 1-3 days after receiving the initial payment. For items with a lead time, shipping will occur according to the specified schedule. |
| Q: How Do We Package the Goods? |
| A: We ensure safe packaging with multiple layers of protection. Products are first placed in their original boxes and sealed with labels. A layer of bubble wrap is then added for collision protection during transit. Finally, the items are packed securely in durable boxes. |
| Q: How Can Customers Contact Us and Request a Quote? |
| A: You can reach out to us via email, WhatsApp, WeChat, Skype, or your preferred communication platform. Contact us with your needs, and we'll provide a prompt, customized quote. |
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