Technical Specifications Breakdown
Key parameters for the CC-PAOH51 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Output Type | 4-20 mA |
| Output Channels | 16 |
| Output Ripple | < 100 mV peak-to-peak at power line frequency, across 250 Ω load |
| Output Temperature Drift | 0.005% of Full Scale/°C |
| Output Readback Accuracy | ±4% of Full Scale |
| Output Current Linearity | ± 0.05% of Full Scale nominal |
| Resolution | ± 0.05% of Full Scale |
| Calibrated Accuracy | ± 0.35% of Full Scale (25°C) including linearity |
| Directly Settable Output Current Range | 0 mA, 2.9 mA to 21.1 mA |
| Maximum Resistive Load (24 V supply = 22 VDC through 28 VDC) | 800 ohms |
| Maximum Output Compliant Voltage (24 V supply = 22 VDC through 28 VDC) | 16 V |
| Maximum Open Circuit Voltage | 22 V |
| Response Time (DAC input code to output) | settles to within 1% of final value within 80 ms |
| Gap (0 mA) of Output to Field on Switchover | 10 ms maximum (applies to Redundancy only) |
Industry Applications
Its 4-20 mA output is standard for driving valve positioners, variable speed drives, and other field instruments. The HART capability allows for remote status monitoring and configuration, reducing manual intervention. With 16 channels, it can manage multiple loops, saving space and cost.

Installation & Setup Guidance
When installing the CC-PAOH51, ensure proper mounting in the designated IOTA chassis (CC-TAOX51 for non-redundant, CC-TAOX61 for redundant). Verify that the supply voltage is within the specified range (22 VDC to 28 VDC) to achieve the maximum resistive load of 800 ohms. Connect field wiring to the appropriate terminals, observing polarity. For redundant configurations, the 10 ms gap on switchover ensures minimal disruption. Always follow the system’s grounding and shielding guidelines to minimize noise.
Maintenance & Reliability
The module’s extensive self-diagnostics help detect issues early. Regularly inspect the module for signs of overheating or physical damage. Periodically verify output accuracy using the readback feature. Since the module supports non-incendive outputs, ensure that field wiring complies with area classification requirements. Keep the module clean and free from dust to maintain thermal performance.
Why settle for uncertain output control in critical processes?
In industrial automation, a single faulty output can halt production or compromise safety. The Honeywell CC-PAOH51 Analog Output with HART module addresses this challenge by delivering precise, reliable 4-20 mA signals to actuators and recording devices. With extensive self-diagnostics and configurable safe-state behavior, this module helps maintain process integrity even under fault conditions.

Compatibility & Integration
The CC-PAOH51 is part of Honeywell’s Series C I/O family, designed to integrate with Honeywell control systems. It supports HART for status and configuration, allowing integration with HART-enabled field devices. The module can be configured for optional redundancy, enhancing system availability. For non-redundant applications, the CC-TAOX51 IOTA is used; for redundant, the CC-TAOX61.
Selection Guide & Purchasing Advice
When selecting the CC-PAOH51, consider your channel count and redundancy requirements. If you need high availability, opt for the redundant configuration with the CC-TAOX61. AutoDCSTech offers genuine Honeywell modules and can assist with availability and lifecycle status. Contact AutoDCSTech to verify current stock and ensure the module meets your application needs.
Troubleshooting & Common Issues
If you encounter output issues, first check the configuration of the FAILOPT parameter. Each channel can be set to HOLD LAST VALUE or SHED to a SAFE VALUE. If the IOM device electronics fail, the output will go to zero, the safe state. For open-wire detection, the module will annunciate a Channel Soft Failure. Use the readback accuracy to verify output integrity. If problems persist, consult the system diagnostics and ensure that the load resistance does not exceed the maximum specified.
Availability & Condition at AutoDCSTech
| Part Number | CC-PAOH51 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
