Description
The Honeywell 05701-A-0325 is a DC input card designed specifically for industrial automation and control systems, mostly integrated within Honeywell’s System 57 series. It functions as the primary power input interface for a sub-chassis or control rack, distributing a stable nominal 24V DC power supply to all connected modules through the engineering card and backplane. This ensures a reliable and protected power source critical for continuous industrial operations, especially in sectors like chemical plants, pharmaceuticals, manufacturing, and energy management systems. The Honeywell 05701-A-0325 is used extensively in control systems to enhance automation efficiency and maintain power integrity across complex process environments.
In practical terms, the Honeywell 05701-A-0325 facilitates common power connection points and safeguards the power supply from faults with features like fuse protection, reverse polarity protection, and radio frequency interference (RFI) filtering. It supports multiple power inputs and allows auxiliary DC input connections such as battery backups, which are electrically isolated using diodes to maintain uninterrupted operation during power interruptions. Its plug-in module design eases maintenance, enabling removal without disconnecting wiring, a vital aspect for minimizing downtime during repairs or upgrades.
- 05701-A-0325
The card is designed to operate within an input voltage range of 18 to 30V DC, delivering a regulated output of 24V DC with a maximum output current capacity of 5A. Physically, it measures approximately 100mm x 160mm x 25mm and weighs around 2 kg. Its robust architecture suits demanding industrial environments, offering protection from electrical disturbances and ensuring steady power for connected control cards. Reverse polarity protection and short-circuit safeguards improve system resilience, while RFI filtering diminishes interference that could otherwise disrupt control signals or damage sensitive electronics.
| Parameter | Value |
|---|---|
| Model | Honeywell 05701-A-0325 |
| Brand | Honeywell |
| Product Type | DC Input Card |
| Input Voltage Range | 18-30 V DC |
| Output Voltage | 24 V DC |
| Maximum Output Current | 5 A |
| Mounting | Plug-in module for control racks |
| Dimensions | 100 mm x 160 mm x 25 mm |
| Weight | Approximately 2 kg |
| Protection Features | Fuse, reverse polarity, RFI filter |
| Auxiliary Power Input | Supports backup battery input |
| Environmental Rating | Industrial-grade robustness |
| Operating Temperature | Typically -10°C to +50°C |
Related modules complementing the Honeywell 05701-A-0325 include the multi-channel control card 05701-A-0451, catalytic sensor drive 05701-A-0284, high integrity relay card 05701-A-0330, engineering card 05701-A-0361, and various interface and relay cards within the System 57 rack ecosystem designed for enhanced control, diagnostics, and communication.
Installation guidance for the 05701-A-0325 centers on ensuring correct dual power supply connections, proper fuse size verification, and maintaining secure grounding to prevent electrical noise. The plug-in design requires careful handling during insertion and removal to avoid damage to board connectors. Maintenance protocols include visual inspection of fuses and terminal block connections, verification of backup power functionality, and routine system diagnostics to detect power irregularities early.






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