900H32-0302 Honeywell High-Side 0.5A DC Output Module

Honeywell 900H32-0302 DC Digital Output Module

The 900H32-0302 is a high-density 32-channel DC sourcing output module for the Honeywell HC900 controller. It delivers robust switching for industrial DC loads with integrated electronic protection.

Core Technical Specifications

• Brand: Honeywell
• Model Number: 900H32-0302
• Product Type: Digital Output (DO) Module, DC Voltage
• Outputs per Module: 32 Channels
• Output Type: Current Sourcing, High-Side Switch
• Operating Voltage Range: 10.5 VDC to 32 VDC
• Peak Voltage Rating: 32 VDC
• Galvanic Isolation: 2 Groups of 16 Outputs
• ON Voltage Drop: 0.15 VDC @ 0.5 A Load
• Maximum Load Current: 0.5 A per Point, 6 A max per Channel Group, 12 A max per Module (Resistive Load)
• Maximum Incandescent Lamp Load: 0.25 A per Point (5 mH max inductance)
• Maximum Leakage Current: 0.15 mA @ 32 VDC
• Maximum Inrush Current: 2 A for 10 ms
• Minimum Load: 0.0 mA (No Minimum Required)
• OFF to ON Response Time: 6 ms (excluding controller scan & backplane transmission)
• ON to OFF Response Time: 6 ms (excluding controller scan & backplane transmission)
• Overload Protection: Active Current Limiting in 4 Groups of 8 Channels; Auto-Reset
• Fail-Safe Modes: Hold Last State, User-Defined Failsafe State
• Terminal Block: Euro Style 36-Terminal Block Required
• Channel Status Indicator: Green LED per Channel (ON when output is active)
• Module Status LED: Green Blinking (Active Scan), Red (Fault/Diagnostic)
• Operating Temperature: -40°C to +70°C (Extended Range)
• Storage Temperature: -40°C to +85°C
• Power Supply: External DC Source (10.5-32V DC) connected to +V/COM terminals per group

Module Features & Protection

• High-side sourcing outputs simplify wiring by providing power directly to field devices.
• High channel density (32 outputs) saves valuable rack space in control systems.
• Active electronic current limiting protects outputs from short circuits and overloads without requiring fuses.
• Protection groups (4 groups of 8 channels) limit fault impact; module auto-recovers when fault is cleared.
• Very low voltage drop (0.15V) ensures maximum voltage is delivered to the load.
• Extended operating temperature range (-40°C to +70°C) ensures reliability in harsh environments.
• Configurable failsafe behavior allows safe operation during communication loss.

Installation & Wiring Guidelines

• Install in a compatible Honeywell HC900 rack. A Euro style 36-terminal block is required for field connections.
• Provide two external DC power supplies (one for each group of 16 channels) within 10.5-32V DC.
• Connect the external DC+ to the +V terminal and DC- to the COM terminal for each group.
• Connect the load between the output terminal and the DC- (common) of the power supply.
• Do not exceed 0.5A continuous current per output or 6A total per group of 16 channels.
• For inductive loads (relays, solenoids), use external flyback diodes to protect the outputs.
• Group wiring according to the protection groups (8 channels) to minimize disruption from a fault.

Typical Applications

• Driving indicator lights, LED panels, and annunciators.
• Controlling relay coils, solenoid valves, and small DC actuators.
• Interfacing with PLC input modules and other low-power DC devices.
• General-purpose DC control in machinery and process automation.

For wiring diagrams or to order the Honeywell 900H32-0302, contact our engineering support.

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