Honeywell 900H01-0202 Relay Output Module 8-Channel

Honeywell 900H01-0202 Relay Output Module

The 900H01-0202 is an 8-channel electromechanical relay output module for the Honeywell HC900 controller. It provides flexible and robust switching for AC or DC loads with isolated contacts for maximum application versatility.

Core Technical Specifications

• Brand: Honeywell
• Model Number: 900H01-0202
• Product Type: Relay Output (DO) Module
• Outputs per Module: 8 Channels
• Contact Configuration: 4 Form A (SPST-NO), 4 Form C (SPDT)
• Output Device: Electromechanical Relay
• Contact Rating (Resistive Load): 4 A @ 240V AC or 30V DC
• Contact Rating (Incandescent Lamp Load): 0.5 A @ 240V AC or 30V DC
• Galvanic Isolation: Relay Contact-to-Contact, Relay Contact-to-Logic
• Maximum Leakage Current: 1 mA @ 350 VDC
• OFF to ON Response Time: 11 ms Maximum (excluding controller scan & backplane transmission)
• ON to OFF Response Time: 8 ms Maximum (excluding controller scan & backplane transmission)
• Mechanical Life: 50 million operations minimum (at 180 cycles per minute)
• Electrical Life: 100,000 operations minimum (at rated load)
• Fail-Safe Modes: Hold Last State, User-Defined Failsafe State
• Channel Status Indicator: Green LED per Channel (ON when relay is energized)
• Module Status LED: Green Blinking (Active Scan), Red (Fault/Diagnostic)
• Fusing: Not Included; External Fuse Required per Output at Field Device
• Operating Temperature: 0°C to +60°C (Standard HC900 Range)
• Derating: None Required for Max Outputs at Max Load; No Limit on Max Modules per Rack

Module Features & Design

• Mixed contact configuration: Form A (Normally Open) for simple on/off and Form C (Changeover) for dual control or alarm circuits.
• Individual isolation between each relay contact and from the control logic prevents ground loops and noise interference.
• Rated for both AC (up to 240V) and DC (up to 30V) loads, offering broad application compatibility.
• High mechanical life ensures long-term reliability for frequent switching applications.
• Visual LED per channel provides clear status indication for monitoring and troubleshooting.
• Configurable failsafe behavior ensures safe process operation during system communication loss.
• Requires external fusing at the field device for overcurrent protection, as per standard industrial practice.

Installation & Wiring Guidelines

• Install in a compatible Honeywell HC900 rack.
• Connect field load wiring to the relay output terminals according to the contact form (Form A or Form C).
• For each output, install an appropriate external fuse at the field device based on load current and wire size.
• For inductive loads (motors, solenoids), use external surge suppression (RC snubber for AC, diode for DC).
• Observe the contact ratings: do not exceed 4A resistive or 0.5A incandescent lamp load per channel.
• Utilize Form C contacts for applications requiring a normally closed (NC) fail-safe state or dual output signals.
• Ensure proper isolation between different voltage systems when using multiple relays on the same module.

Typical Applications

• Switching motor starters, contactors, and HVAC equipment.
• Controlling alarm annunciators, horns, and strobe lights.
• Interfacing with devices requiring a dry contact input (e.g., other PLCs, recorders).
• General-purpose power switching for a variety of AC and DC loads.

For fuse selection guidance or to order the Honeywell 900H01-0202, contact our technical sales team.

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

Partner: NexAuto Technology Limited

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