Product Description
The AAP849-S50 is a high-performance integrated I/O module designed for the Yokogawa Electric Corporation CENTUM VP distributed control system (DCS).
This module combines pulse signal acquisition and analog output control within a single hardware unit, optimizing panel space and simplifying field wiring in Remote I/O (RIO) nodes.
It is engineered for demanding industrial environments where high-speed pulse monitoring and precise analog control must operate simultaneously. Typical applications include receiving pulse inputs from turbine flow meters or speed sensors while delivering accurate 4–20 mA control signals to valves and actuators.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Designation | AAP849-S50 |
| System Compatibility | CENTUM VP (FIO System) |
| Input Channels | 8-channel pulse input |
| Output Channels | 4-channel analog output |
| Pulse Input Frequency Range | 0.1 Hz to 10 kHz |
| Input Signal Type | Dry contact, voltage pulse, current pulse (2-wire / 3-wire) |
| Analog Output Range | 4–20 mA DC |
| Accuracy | ±0.1% of full scale |
| Isolation | 1500 V AC (field-to-system) |
| Power Consumption | 5.5 VA (maximum) |
| Mounting | Compatible with ANB10D or ANB10S node units |
| Operating Temperature | -20°C to +70°C |
Common Application Scenarios
Flow Custody Transfer
Receives high-frequency pulse signals from turbine flow meters for precise volume calculation and totalization.
Turbine Control Systems
Monitors rotational speed via pulse inputs while providing 4–20 mA control signals to steam or gas control valves.
Blending & Dosing Systems
Correlates pulse-based flow measurements with analog valve positioning for accurate proportioning.
By integrating pulse and analog output functions, the AAP849-S50 reduces module count and improves cabinet density in FIO-based architectures.
Technical FAQ
Does the AAP849-S50 support redundant configurations?
Yes. When installed in a duplexed FIO node, the module supports dual-redundant communication to maintain continuous operation in case of a bus failure.
Can this module power 2-wire field transmitters?
Yes. The pulse input channels can supply transmitter power (typically 24 V DC), depending on wiring configuration and external load requirements.
| 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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