Yokogawa AAP149 Pulse Input Module PM1 Series High Speed Counter

Description

Yokogawa AAP149 Pulse Input Module Overview

• Brand: Yokogawa
• Model: AAP149
• Series: PM1 Compatible Module
• Type: 16-Channel Pulse Input Module

• Functional Positioning
  • Designed for pulse counting applications.
  • Receives signals from pulse input conditioner cards.
  • Processes 16-channel pulse train signals.
  • Supports integration with Yokogawa Centum VP systems.

• Core Performance Highlights
  • Handles up to 6 kHz input frequency.
  • Fast 2 ms data refresh cycle.
  • Trailing edge pulse detection.
  • Stable counting under high load.
  • Low internal power loss.
  • Reliable for long-term operation.

Technical Specifications

• Input Channels: 16 channels, non-isolated
• Input Type: Transistor contact, open collector
• Input Frequency: 0 to 6 kHz
• Pulse Detection: Trailing edge
• Data Update Period: 2 ms
• Maximum Current: 400 mA at 5 V DC
• Internal Logic Voltage: 5 V DC
• Signal Voltage Range: 0 to 24 V DC typical
• Minimum Pulse Width: 80 μs
• Operating Temperature: 0 to 55 °C
• Storage Temperature: -20 to 70 °C
• Humidity: 10 to 90% RH non-condensing
• Noise Immunity: Designed for industrial EMI resistance
• External Connection: Dedicated KS2 cable
• Weight: 0.3 kg

Configuration Breakdown

• AAP149 – S – 0 – 0 – 1
  • AAP149
    • Pulse Input Module
  • S
    • Standard type
  • 0
    • Fixed code
  • 0
    • Basic hardware version
  • 1
    • ISA Standard G3 option

Application Scope

• Flow meter pulse counting.
• Turbine speed monitoring.
• Energy metering systems.
• Production line encoder signals.
• Batch process pulse tracking.

Installation Notes

• Use original KS2 cable for stable signal.
• Install inside protected control cabinet.
• Keep signal wires away from power cables.
• Confirm correct polarity before wiring.

Operational Benefits

• Fast scan improves control response.
• High channel density saves space.
• Clear signal logic reduces error count.
• Low heat design supports stable runtime.

Warranty & Shipping

• 12-month warranty from shipment date.
• Worldwide delivery by FedEx, UPS, DHL.
• Strong anti-static export packaging.

FAQ

• Can this module read encoder signals directly?
• Yes, if the encoder provides open collector output.
• Check voltage level before connection.

• How to reduce counting errors in noisy sites?
• Use shielded cable.
• Apply proper grounding.
• Keep short wiring distance.

• What happens if pulse frequency exceeds 6 kHz?
• The module may miss pulses.
• Choose a higher speed model if needed.

• Is isolation required for my project?
• This model is non-isolated.
• Use external isolation if field voltage is unstable.

• How to choose the ISA G3 option?
• Select G3 for corrosive environments.
• Useful in chemical and coastal plants.
• It extends product life in harsh air.

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