Honeywell 621-0008 Pulse Input Module (PIM) – Reliable Data Capture for Distributed Control Systems

The Honeywell 621-0008 Pulse Input Module (PIM) is designed for Honeywell’s 620/621 Distributed Control Systems (DCS). It efficiently captures high-speed digital pulses from field devices such as flow meters, proximity switches, and encoders. The module converts these pulses into countable data for precise process control.

Key Features:

• Model: 621-0008
• Brand: Honeywell
• Type: Pulse Input Module (PIM)
• Compatible Series: Honeywell 620/621 DCS
• Functionality: Captures high-speed digital pulses for process control
• Certifications: CE, UL508, CSA, TUV
• Warranty: 12 months
• Origin: USA

Technical Specifications:

Functionality:

The Honeywell 621-0008 Pulse Input Module provides eight isolated pulse inputs, making it ideal for applications requiring precise data capture and monitoring. It operates within a broad voltage range, from 5VDC to 48VDC, and can handle frequencies up to 100 kHz per channel. This allows it to interface with various field devices, such as flow meters and encoders, converting their pulses into countable data for process control.

The module uses 16-bit up counters to store pulse data, with a maximum count of 65,535 per input. Additionally, users can reset or read counters via the processor, ensuring seamless integration with Honeywell’s 620/621 DCS for reliable system operation.

Why Choose the Honeywell 621-0008 Pulse Input Module?

• High-Speed Data Capture: Supports frequencies up to 100 kHz per channel for accurate and real-time data processing.
• Wide Input Voltage Range: Works with input voltages between 5VDC and 60VDC, making it versatile for different systems.
• Durable and Certified: CE, UL508, CSA, and TUV certifications ensure the module meets high standards for industrial use.
• Compact and Lightweight: Its small size (3.0 cm x 26.7 cm x 17.3 cm) and light weight (0.4 kg) make it easy to install in space-constrained environments.

Installation Notes:

• Mount the module in a Honeywell 620/621 I/O rack for proper functionality.
• Ensure correct voltage selection for each input channel based on the device specifications.
• Use shielded cables for high-frequency pulse sources to avoid signal interference.
• Configure processor logic to read and reset counters as required, ensuring optimal performance.
• Adhere to voltage and frequency limits to prevent potential damage to the module.