Honeywell 621-9935 Serial I/O Module

Overview

The Honeywell 621-9935 is a serial I/O module designed for industrial automation systems. It enables reliable serial communication between controllers and field devices, expanding system connectivity and facilitating efficient data exchange.

General Information

Part Number: 621-9935

Manufacturer: Honeywell

Brand / Country of Origin: Honeywell / USA

Series: 600 Series

Type: Serial I/O Module / Communication Interface

Mounting: Panel or rack installation within control cabinets

Technology: Serial communication interface, integrated diagnostics, and status monitoring

Power Specifications

Supply Voltage: 24 V DC

Power Consumption: ≤ 15 W

Input: Powered via system backplane

Protection: Overvoltage and reverse-polarity protection

Indicators: LED indicators for power, communication status, and fault

Communication & Interface

Interface Ports: Standard industrial serial bus connection

Network Role: Expands serial communication for controllers and field devices

Diagnostics: Monitoring of serial lines, fault detection, and status reporting

Operator Interface: LED indicators for visual status

Reset Features: Supports hardware and software reset

Environmental

Operating Temperature: 0 to +60 °C

Humidity: Up to 95% RH, non-condensing

Protection Rating: IP20 for standard industrial cabinet installation

Dimensions & Weight

Dimensions (L × W × H): 164 × 32 × 127 mm

Weight: 0.63 kg

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