Yokogawa AAP135-S50/K4A00 Pulse Input Module

The Yokogawa AAP135-S50/K4A00 Pulse Input Module is designed for high-speed pulse signal acquisition and processing within Yokogawa Distributed Control Systems (DCS). This module is ideal for counting, frequency measurement, and totalization of pulse signals from field devices, including flow meters, encoders, and frequency generators.

Engineered for industrial reliability, the AAP135-S50/K4A00 ensures high-precision pulse measurement even in electrically noisy environments. Its robust channel-to-channel isolation maintains signal integrity while the modular plug-in design allows easy installation, replacement, and maintenance in Yokogawa standard racks. LED indicators provide clear operational and fault feedback, streamlining monitoring and troubleshooting.

This module is particularly suitable for high-speed process monitoring, automation systems, and industrial applications requiring accurate pulse measurement and real-time data acquisition.

Product Specifications

Applications

• Flow Monitoring: Interfaces with pulse-type flow meters for precise volume or mass flow calculations.

• High-Speed Frequency Monitoring: Captures pulse signals from generators, encoders, and other rapid digital sources.

• Rate and Totalization Functions: Calculates instantaneous rates and total counts in real-time for industrial processes.

• Industrial Automation: Supports pulse-based control in automated systems.

• Process Monitoring: Integrates into DCS for logging, alarming, and monitoring pulse inputs.

• Redundant System Operation: Supports fail-safe configurations for critical applications.

Advantages

• Ultra-High-Speed Acquisition: Supports pulse frequencies up to 50 kHz for rapid industrial processes.

• Versatile Counting Modes: Includes up-count, down-count, and totalizing for flexible applications.

• Robust Isolation: 1500 Vrms channel-to-channel and backplane isolation reduces interference.

• Diagnostic LEDs: Provide immediate visual feedback for power, operation, and fault conditions.

• Modular Design: Plug-in architecture simplifies installation, maintenance, and replacement.

• Industrial Reliability: Operates efficiently across wide temperature and humidity ranges.

• Precise Pulse Capture: Fast response time (<1 ms) ensures accurate counting and frequency measurement.

FAQ

1. What pulse signal types does the AAP135-S50/K4A00 accept?

   It accepts digital voltage pulses and contact closure inputs.

2. What is the maximum pulse frequency the module can measure?

   It supports pulse frequencies up to 50 kHz.

3. What is the minimum pulse width that can be detected?

   The minimum pulse width is 20 microseconds.

4. How many pulse input channels are available?

   There are 16 independent pulse input channels.

5. Can the module perform totalization and rate calculations?

   Yes, it supports up-count, down-count, and totalizing functions for each channel.

6. How is channel isolation achieved?

   Each channel is galvanically isolated up to 1500 Vrms from other channels and from the backplane.

7. How does the module indicate faults or errors?

   LED indicators display module power, operational status, and errors.

8. Is the module hot-swappable?

   No, it must be powered down before insertion or removal to prevent signal disturbances.

9. Can outputs be integrated with PLCs or other control systems?

   Yes, processed pulse data is compatible with PLCs and DCS systems.

10. Does the module support high-speed real-time pulse acquisition?

    Yes, with typical response time <1 ms, it is suitable for high-speed industrial monitoring.