Honeywell 9967296 Product Description (621 Series I/O Module)

Model: 9967296 (Standard Model: 621-9968)

Brand: Honeywell

Series: 620/621 Series DCS, IPC Control System

Type: 8-channel Relay Digital Output Module (DO)

I. Product Overview

9967296 (621-9968) is a 8-channel relay output card of Honeywell 621 series, a simplified version of 9967295 (16-channel DO). It provides dry contact isolation output through SPDT relays, used to drive small-power switching devices such as solenoids, indicator lights, contactors, and alarms, suitable for control circuits with limited space or fewer points, widely used in power plants, chemical plants, petrochemicals, etc. industrial process control systems.

II. Core Specification Parameters

Channel Count: 8 independent relays output

Contact Type: SPDT (Single-Pole Double-Throw) Relay

Contact Capacity:

240 VAC / 30 VDC: 5A (resistive load)

Maximum Switching Power: 1250 VA / 150 W

Isolation: Channel - Backplane Full Electrical Isolation (2500 Vrms)

Power Supply: 24 V DC Backplane Power Supply

Power Consumption: < 5 W

Installation: Standard 19-inch Rack, Supports Hot Swap

Status Indicators: Independent LED (ON), PWR, FAULT Indicators per Channel

Operating Temperature: -40°C ~ +70°C

Humidity: 5% ~ 95% RH (No Condensation)

MTBF: > 1,000,000 Hours

Certifications: UL, CE, CSA, Class I Div 2 Explosion-proof Option Available

III. Features and Benefits

8-channel Independent Isolated Output

Each channel is an independent SPDT Relay, no shared common terminals

Supports Normally Open (NO) / Normally Closed (NC) Flexible Wiring

Complete Electrical Isolation between Channels to Prevent Short Circuit Spread and Signal Crosstalk

Industrial-grade Reliability

Silver Alloy Contacts, Low Contact Resistance, Long Life

Mechanical Life: > 1×10⁷ Times; Electrical Life: > 2×10⁷ Times

Strong Anti-interference (Compliant with EN 61000-6-2/4 EMC Standards)

Full Metal Shielding, Suitable for Harsh Industrial Environments

Compact Design and Usability

Single-slot Standard Width, Saves Rack Space

Plug-in While Powered, Online Maintenance, Replacement without System Interruption

Can be installed in the same rack with 621-9937 (DI), 621-9939 (AI), 623-5020 (CPU), 627-1002 (Communication)

IV. Typical Applications

Control of Small Power Devices (Small Pumps, Valves, Indicators)

Alarm and Fault Indication Circuits

Safety Interlock System (ESD)

Electromagnetic Valve Drive

Relay Coil, Alarm Control

V. Model Comparison

9967296: General Material Number

621-9968: Standard Model (621 Series 8-channel DO Card)

621-9967 / 9967295: 16-channel Relay Output (Full Version)

621-9968R: Redundant Type