The Yokogawa APM11 is a reliable pulse input module designed for industrial automation applications. It converts contact closures, voltage pulses, and current pulses into analog signals for use by control systems.

Key Features

• Versatile Input: Handles contact ON/OFF, voltage pulse, and current pulse signals.
• Wide Frequency Range: Accepts input frequencies from 0 to 10 kHz.
• Fast Data Update: Provides updated data every 10 milliseconds.
• Flexible Power Supply: Operates on either 12VDC or 24VDC power.
• Transmitter Power Supply: Supplies power to external transmitters (limited current).
• Auxiliary Output: Offers transistor contact output for additional functionality.

Technical Specifications

• Input Signal: Contact, voltage pulse, current pulse (2-wire or 3-wire)
• Input Frequency: 0 to 10 kHz
• Data Update Period: 10 ms
• Minimum Pulse Width: 40 µs
• Input Signal Level: Contact, Voltage (3-24VDC), Current (converted to voltage)
• Shunt Resistor: Selectable (200Ω, 510Ω, 1000Ω)
• Auxiliary Output: Open collector transistor contact (30VDC, 30mA)

Applications

• Flow rate measurement (pulse output flow meters)
• Speed monitoring (encoders)
• Position sensing (limit switches)
• Event counting