900K01-0201 Honeywell Pulse Input/Output Module

Honeywell 900K01-0201 Pulse/Frequency/Quadrature Module

The 900K01-0201 is a versatile 4-channel signal interface module for the Honeywell HC900 controller. Each channel can be configured as a high-speed pulse input, frequency input, or pulse output, providing flexible motion and flow measurement control.

Core System Specifications

• Brand: Honeywell
• Model Number: 900K01-0201
• Product Type: Pulse/Frequency/Quadrature Module
• Channels per Module: 4 (Individually Configurable)
• Channel Functions: Pulse Input, Frequency Input, or Pulse Output (per channel)
• Input/Output Voltage Range: 0 VDC to 24 VDC
• Digital Output Type: Open Collector
• Digital Output Rating: 5 to 24V, 30 mA Maximum
• Module Status LED: Green Blinking (Active Scan), Red (Fault/Diagnostic)
• Note: Quadrature signal decoding is not supported in the current release.

Pulse Input Specifications

• Input Voltage Range: 0 to 24 VDC
• ON Voltage Level: 3.0 VDC Minimum
• OFF Voltage Level: 1.0 VDC Maximum
• Input Impedance: 25 kΩ
• Maximum Frequency: 10 kHz
• Minimum Pulse Width: 3 µs
• Counter Resolution: 32-bit
• Preset Value: User-configurable (within 32-bit range)
• Preset Action: Configurable as ON or OFF in HC Designer:
  • ON: Digital output turns ON for 1 second when preset is reached.
  • OFF: Digital output latches ON until a counter reset command.
• Counter Behavior at Preset: Auto-reset and continue (Preset Action ON) or count beyond preset (Preset Action OFF).
• Counter HOLD: Enabled via I/O data type in ControlEdge Builder.
• Counter RESET: Via OFF-to-ON transition on RST input in ControlEdge Builder.
• Status Flags: OVERFLOW flag (STS=33) on counter overflow; PREI flag when digital output activates.

Frequency Input Specifications

• Input Voltage Range: 0 to 24 VDC
• ON Voltage Level: 3.0 VDC Minimum
• OFF Voltage Level: 1.0 VDC Maximum
• Input Impedance: 25 kΩ
• Frequency Range: 10 Hz Minimum, 100 kHz Maximum
• Minimum Pulse Width:
  • 500 µs (10 Hz to 500 Hz)
  • 50 µs (10 Hz to 5 kHz)
  • 2.5 µs (10 Hz to 100 kHz)
• Digital Output: Turns ON if measured frequency is out of configured range.

Pulse Output Specifications

• Channel Usage: Any single channel can be used for Pulse Output (disables input functions on that channel).
• Output Type: Open Collector
• Output Rating: 5 to 24V, 30 mA Maximum
• Frequency Range: 25 Hz to 10 kHz
• Duty Cycle: Fixed at 50%
• Output Mode: Selectable as CONTINUOUS or a specific NUMBER OF PULSES.

Module Features & Applications

• Multi-function channels reduce inventory needs by covering pulse counting, frequency monitoring, and pulse generation.
• High-speed 32-bit counter is suitable for totalizing flow meters, rotary encoders, and production batch counting.
• Open-collector output allows interfacing with a wide range of external devices (e.g., panel meters, other controllers).
• Programmable preset actions enable automatic control responses based on counted values.
• Frequency input with out-of-range detection is ideal for monitoring turbine flow meters or motor speeds for alarm conditions.
• Pulse output function can generate precise pulse trains for stepper motor drivers or as a simulated sensor signal.

For configuration examples or to order the Honeywell 900K01-0201, contact our engineering team.

Contact: Email sales@nex-auto.com or WhatsApp +86 153 9242 9628.

Partner: NexAuto Technology Limited

© 2026 AutoNex Controls Limited. All rights reserved.