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- Model: CC-PAOH51
- Brand: Honeywell
- Series: Experion PKS Series C
- Core Function: Drives 4–20 mA analog field devices
- Type: High-Level Analog Output Module with HART
- Key Specs: 16 channels; 4–20 mA; HART-capable; optional redundancy
Product Introduction
Honeywell CC-PAOH51 is a Series C high-level analog output module designed to deliver controlled 4–20 mA signals to actuators, valves, recorders, and indicating devices. Honeywell specifies 16 output channels and HART capability for field-device status and configuration.
For process-control projects, the useful detail is the output architecture rather than just the channel count. Each channel can use configurable FAILOPT behavior, while open-wire detection provides a soft-failure indication. The module supports optional redundancy through the appropriate IOTA, making it suitable for applications where output availability matters.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Model | CC-PAOH51 |
| Manufacturer | Honeywell |
| Product Family | Experion PKS Series C |
| Product Type | High-Level Analog Output with HART |
| Output Type | 4–20 mA |
| Output Channels | 16 |
| Communication | HART |
| HART Function | Status and configuration |
| Non-Redundant IOTA | CC-TAOX51 |
| Redundant IOTA | CC-TAOX61 |
| Maximum Resistive Load | 800 Ω |
| Maximum Output Compliant Voltage | 16 V |
| Maximum Open-Circuit Voltage | 22 V |
| Calibrated Accuracy | ±0.35% F.S. at 25 °C |
| Output Current Linearity | ±0.05% F.S. nominal |
| Temperature Drift | 0.005% F.S./°C |
| Response Time | Within 1% of final value in 80 ms |
Honeywell’s own Series C specification lists a directly settable output range of 0 mA and 2.9–21.1 mA. It also specifies less than 100 mV peak-to-peak output ripple under the stated test condition.
HONEYWELL CC-PAOH51
Application and Selection Notes
The module is intended for process control loops where a DCS must command field devices through analog current signals. Typical examples include control valves, positioners, variable-speed interfaces, and analog recording or indication equipment.
The IOTA must be checked. Honeywell specifies CC-TAOX51 for non-redundant installations and CC-TAOX61 for redundant configurations.
HART is another useful distinction. This is not simply a conventional 4–20 mA output card; HART capability allows field-device status and configuration information to be handled through the control-system architecture.
Replacement Pitfalls
IOTA mismatch: Check whether the installation uses CC-TAOX51 or CC-TAOX61 before ordering.
Load resistance: The published maximum resistive load is 800 Ω under the specified 24 V supply range. Verify the actual loop burden before commissioning.
FAILOPT settings: Output behavior can be configured to hold the last value or shed to a defined safe value. Record the existing configuration before replacement.
HART configuration: If the loop uses HART functions, confirm that the field device and control-system configuration are retained.
Wiring: Photograph the terminal connections before removing the old module. With 16 analog channels, one misplaced wire can create a surprisingly long commissioning session.
Personally, I would verify the IOTA and loop burden first. Those two checks tell you far more than simply matching the front-panel label.
Quality Inspection and Testing
- Inbound inspection: Verify the part number, serial number, terminal interface, connectors, PCB condition, and signs of repair.
- Live test: Install in a compatible Series C test environment and verify power-up, diagnostics, module recognition, and channel operation.
- Analog output test: Generate representative 4–20 mA outputs and measure them with calibrated test equipment.
- HART verification: Where the test setup supports it, verify HART communication and field-device status/configuration functions.
- Electrical testing: Check grounding continuity, insulation condition, and applicable electrical parameters.
- Final QC: Record test results, photograph the unit, use ESD protection, and package the module securely.
Test reports, photographs, or test video can be supplied when available.
Warranty and Availability
Condition: Confirm whether the unit is New Original (New Surplus), used, or refurbished.
Stock: Actual warehouse availability should be confirmed before purchase.
Lead Time: Subject to physical stock, inspection, packaging, and export processing.
Warranty: Supplier warranty applies according to the agreed commercial terms.
The HONEYWELL CC-PAOH51 is a configuration-specific Series C analog output module. Before international procurement, verify the IOTA, redundancy arrangement, 4–20 mA loop requirements, HART usage, hardware revision, condition, country of origin, and export documentation.
