Product Overview
Honeywell 900H32-0302 is a 24 VDC Digital Output Module with 32 current-sourcing outputs. The module splits outputs into 2 groups of 16 channels. Each group has a pair of screw terminals for +V and COM. Outputs use high-side switching. Active current limiting protects outputs in 4 groups of 8 channels. If one channel shorts, that whole group of 8 switches off. No power cycling is needed to reset the module. Each channel has a green LED for ON state. A blinking green status LED shows module scanning. A red status LED shows diagnostics. The module requires a Euro style 36-terminal terminal block. It fits dense DC output panels that need fast fault recovery and clear per-channel status.
Technical Specifications
| Brand | Honeywell |
| Model | 900H32-0302 |
| Series | 900H Digital Output |
| Outputs per Module | 32 (current sourcing, high side) |
| Output Groups | 2 groups of 16 outputs |
| Galvanic Isolation | 2 groups of 16 outputs |
| Operating Voltage | 10.5 to 32 VDC |
| Output Type | High side driver |
| Peak Voltage | 32 VDC |
| ON Voltage Drop | 0.15 VDC @ 0.5 A load |
| Overload Protection | Active current limiting, 4 groups of 8 channels. No power cycling to reset. |
| Maximum Load Current | 0.5 A per point, 6 A max per channel group, 12 A max per module (resistive load); 0.25 A per point incandescent lamp load (5 mH max) |
| Maximum Leakage Current | 0.15 mA @ 32 VDC |
| Maximum Inrush Current | 2 A for 10 ms |
| Minimum Load | 0.0 mA |
| OFF to ON Response Time | 6 ms (excludes controller scan and backplane transmission) |
| ON to OFF Response Time | 6 ms (excludes controller scan and backplane transmission) |
| Fail Safe State | Hold Last State / Failsafe State |
| Fuses | Electronic limiting |
| Operating / Storage Temperature | -40 to 70°C / -40 to 85°C extended operating temperature |
Diagnostics and Maintenance
- Green LED per channel shows output ON state.
- Blinking green status LED shows module scanning.
- Red status LED shows module diagnostics exist.
- Active current limiting protects each 8-channel group.
- No power cycling needed after a short circuit fault.
- Electronic limiting replaces physical fuses for lower maintenance.
Installation and Compatibility Notes
Mount the module in a Honeywell 900H series backplane. Use a Euro style 36-terminal terminal block. Wire each group of 16 outputs with external +V and COM at the screw terminals. Keep load current below 0.5 A per point. The module supports resistive and incandescent lamp loads. Verify group current stays under 6 A per group and 12 A per module. The 0.0 mA minimum load allows use with low-current devices. Confirm fail-safe state in the controller configuration before startup.
Why Buy From Oiltech Controls?
- 15+ years in industrial automation spare parts.
- Global shipment support with FedEx, UPS, and DHL options.
- Tested industrial surplus and refurbished options available.
- 12-month warranty on eligible products.
- Technical verification before shipment to confirm part condition.
- Support for obsolete control systems and legacy Honeywell modules.
Typical Applications
- DC solenoid and valve control in process panels.
- Relay and indicator switching in dense output cabinets.
- Packaging and material handling lines with 24 VDC outputs.
- Legacy Honeywell 900H system expansion and replacement.
- Control panels that need grouped short-circuit protection.
FAQ
Q: How many outputs does the module provide?
A: 32 current-sourcing outputs in 2 groups of 16.
Q: What voltage range does it support?
A: 10.5 to 32 VDC.
Q: How much current per point?
A: 0.5 A per point for resistive loads.
Q: What happens during a short circuit?
A: Active current limiting switches off the affected group of 8. No power cycling is needed to reset.
Q: How do I check module status?
A: Use the green channel LEDs, blinking green status LED, and red diagnostic LED.
Q: Does it support fail-safe configuration?
A: Yes, Hold Last State or Failsafe State.
Q: What terminal block does it need?
A: A Euro style 36-terminal terminal block.
Contact Information
Inquiries: info@oiltechcontrols.com | +86 158 8020 0923 (WhatsApp)
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