New Original Honeywell 8C-PAOH51 Analog Output 4-20mA
Manufacturer: Honeywell
-
Part Number: 8C-PAOH51 51454355-175
Condition：New with Original Package
Product Type: HART Communication
-
Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The Honeywell 8C-PAOH51 (Part Number: 51454355-175) serves as a high-precision 16-channel Analog Output (AO) module for the Honeywell Series C I/O family. This module generates critical 4–20 mA signals to drive final control elements such as valve positioners, dampers, and variable speed drives. Fully integrated with the Experion PKS and C300 controllers, the 8C-PAOH51 supports HART digital communication, allowing engineers to perform remote calibration and diagnostics on smart field devices. We supply this product as 100% Brand New and Original to ensure maximum system availability and loop accuracy.
Technical Specifications
The 8C-PAOH51 provides industry-leading signal stability and isolation for complex process loops.
| Category | Specification |
| Output Channels | 16 Independent Channels |
| Signal Range | 4–20 mA (Standard); 0–20 mA (Optional) |
| HART Support | Full HART Protocol on all channels |
| Resolution | 16-bit D/A conversion |
| Accuracy | ±0.075% FS at 23.5 °C; ±0.15% FS (0–60 °C) |
| Load Capacity | Up to 750 Ω (at 24 VDC supply) |
| Update Rate | 100 ms per channel (Configurable) |
| Isolation | ≥1500 Vrms (Channel-to-Channel & System) |
| Operating Temp | –25 °C to +60 °C |
| Protection Class | IP20 (Requires Cabinet Installation) |
Engineering Advantages
-
Precision Actuator Control: The 16-bit D/A conversion provides granular control over valve positioning. This precision eliminates process oscillations and improves overall plant efficiency.
-
Superior Electrical Isolation: 1500 Vrms isolation protects the C300 controller from field-side electrical surges and ground loops. This architecture prevents a single channel fault from propagating through the entire I/O rack.
-
HART-Driven Maintenance: The module facilitates bi-directional HART communication. Maintenance teams can read actuator travel signatures and write configuration parameters directly from the control room, significantly reducing field exposure and labor costs.
-
Dynamic Response: With an output stabilization time of less than 10 ms, the 8C-PAOH51 handles rapid setpoint changes. This makes it ideal for high-speed dynamic processes in power generation and chemical manufacturing.
-
Hot-Swappable Reliability: The mechanical design allows for "Hot-Plugging" into the Series C IOTA. You can replace a module without disrupting the power or communication of adjacent modules, ensuring 24/7 uptime for critical operations.
FAQs
1. Does the 8C-PAOH51 support redundant configurations for critical valves?
Yes. When paired with a redundant Series C I/O Termination Assembly (IOTA), the 8C-PAOH51 supports full redundancy. The C300 controller manages the bumpless transfer between the primary and secondary AO modules if a hardware fault occurs.
2. What happens to the output signal if communication with the C300 controller is lost?
The module features "Safe-state" (FAILOPT) behaviors. During configuration in Experion PKS, you can program each channel to hold its last value or shed to a pre-defined safe current (e.g., 4mA or 0mA) to ensure the field equipment reaches a fail-safe position.
3. Can I use this module for non-HART actuators?
Absolutely. The 8C-PAOH51 functions as a high-performance standard 4-20mA analog output card. If a HART device is not detected, it operates in standard analog mode without any specialized configuration.
4. How does the 8C-PAOH51 handle short-circuits in the field wiring?
The module includes integrated over-current and short-circuit protection. If a fault occurs on the field wires, the module limits the current to protect its internal circuitry and triggers a real-time diagnostic alarm in the Experion system.