Yokogawa AAP849 Pulse Input/Analog Output Module

The Yokogawa AAP849 Pulse Input/Analog Output Module is a high-performance I/O module designed for integration into Yokogawa’s control systems, particularly those in the CENTUM VP or ProSafe-RS platforms. This module is tailored for applications requiring precise pulse signal acquisition and analog output generation, making it ideal for flow measurement systems, energy metering, and industrial process automation.

The AAP849 supports multiple pulse input formats, including contact closures and open-collector types, and converts these signals into accurate analog output ranges. The module adheres to strict industrial standards for reliability, electromagnetic compatibility, and operational endurance. Yokogawa’s dedication to operational excellence and seamless system integration is exemplified in this device, which combines high accuracy, low noise, and a wide operational range.

Product Specifications

Product Applications

The AAP849 module is designed to meet the requirements of a wide range of industrial applications, including:

• Flow Measurement Systems: Converts pulse input from turbine, vortex, or electromagnetic flowmeters into analog signals.

• Batch Processing Plants: Enables accurate quantity metering by counting pulses from flow sensors.

• Energy Monitoring: Interfaces with energy meters providing pulse outputs to represent energy usage.

• Pump Monitoring Systems: Monitors the operational status of pumps through pulse feedback and controls output.

• Water and Wastewater Treatment: Used in dosing and metering applications to ensure accurate chemical delivery.

• Oil & Gas Facilities: Applied in metering skids and flow measurement in upstream and downstream operations.

Product Advantages

• High Input Flexibility: Supports a variety of pulse signal types, allowing integration with a wide range of field devices.

• Accurate Analog Output: Delivers consistent and accurate analog output, ensuring reliable feedback to control systems.

• Industrial Durability: Designed for harsh industrial environments, with robust temperature and humidity tolerance.

• Compact Design: Slim module width optimizes space in control cabinets and rack-mounted systems.

• System Integration Ready: Seamlessly integrates with Yokogawa DCS platforms like CENTUM VP and ProSafe-RS.

• Electrically Isolated: Ensures safety and prevents cross-talk between channels through optical isolation.

• Plug-and-Play Architecture: Facilitates easy replacement and maintenance without system downtime.

• Compliance and Certification: Meets international standards, ensuring operational confidence across industries.

FAQ

1. What types of pulse inputs does the AAP849 support?

   The module supports contact closure, open-collector, and voltage-type pulse inputs.

2. Can the analog output range be customized?

   Yes, the analog output can be configured for 4–20 mA or 0–10 V depending on system requirements.

3. Is this module compatible with Yokogawa CENTUM VP systems?

   Absolutely, the AAP849 is fully compatible with CENTUM VP and ProSafe-RS platforms.

4. Does the module support isolated channels?

   Yes, the AAP849 provides optical isolation between the input/output and system bus.

5. What is the resolution of the analog output?

   The module provides a 12-bit resolution on its analog outputs for fine control.

6. What are the power requirements for the AAP849?

   It receives power from the system’s backplane, typically 24 VDC.

7. How many input and output channels are available?

   The AAP849 features 4 pulse input channels and 2 analog output channels.

8. Can the AAP849 be mounted on DIN rail systems?

   Yes, it can be mounted on DIN rails or through a baseplate in a control cabinet.

9. Is this module certified for use in hazardous areas?

   It carries CE, CSA, UL, and RoHS certifications but specific hazardous area ratings depend on the overall system integration.

10. What kind of maintenance is required?

    Minimal maintenance is needed; regular system diagnostics and firmware updates (if any) suffice.