Product Description
The AAP135-S00/13S00 is a high-precision pulse input module developed for the Yokogawa Electric Corporation CENTUM VP Distributed Control System (DCS).
This module is engineered to accept frequency and pulse signals from field devices such as flow meters, turbine meters, tachometers, and power transducers. It converts incoming signals into normalized digital data for real-time process monitoring and totalization.
Supporting up to 8 isolated input channels, the AAP135-S00/13S00 ensures high signal integrity in electrically noisy industrial environments. With high-speed pulse counting and frequency measurement capability up to 10 kHz, it is particularly suitable for custody transfer measurement, turbine speed monitoring, and energy metering applications.
The module also integrates filtering logic to suppress mechanical contact bounce, improving reliability when interfacing with legacy dry-contact devices.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Designation | AAP135-S00/13S00 |
| System Platform | CENTUM VP |
| Number of Channels | 8 channels (isolated) |
| Measurement Accuracy | ±0.1% of frequency or ±1 count (totalization) |
| Input Impedance | ≥10 kΩ (voltage input) |
| Isolation Withstand Voltage | 500 V AC (input-to-system) |
| Current Consumption | 450 mA max at 5 V DC |
| Data Update Cycle | 10 ms to 100 ms (configuration dependent) |
| Dimensions | 130 mm × 132 mm × 45 mm |
| Weight | 0.35 kg |
Functional Capabilities
The AAP135-S00/13S00 provides dual-function processing, allowing simultaneous:
-
Instantaneous frequency calculation (e.g., flow rate or RPM)
-
Pulse totalization (e.g., accumulated volume or energy consumption)
This integrated capability reduces the need for external signal converters and simplifies overall DCS architecture.
Its high-speed detection and stable update cycle make it ideal for dynamic process variables such as turbine shaft speed and high-accuracy flow measurement.
FAQ
Does this module support redundant configurations?
Yes. The AAP135-S00/13S00 can be deployed in a duplexed I/O configuration. When installed in a redundant nest, the system enables seamless switchover without losing pulse count data during hardware failure.
What is the difference between AAP135 and AAP149?
The AAP135-S00/13S00 is designed for general-purpose pulse and frequency inputs up to 10 kHz. The AAP149 typically supports specialized high-speed applications or different voltage threshold requirements depending on system revision.
Can I use this module for turbine speed monitoring?
Yes. With a 10 kHz frequency response, 40 µs minimum pulse width detection, and fast data update cycle, it is well-suited for turbine tachometer inputs where high precision and reliability are essential.
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| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
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