Product Overview

The Honeywell CC-PAOH51 (PN: 51410070-176) is a 16-channel Analog Output (AO) module with integrated HART communication for Experion PKS Series C. It delivers precise 4–20 mA signals to field actuators such as valves and VFDs.

Compared to legacy CC-PAOH01, this modern revision improves thermal management and component reliability. Its Series C tilted form factor promotes natural convection, and G3 conformal coating (-176) protects against corrosive industrial atmospheres.

Technical Data

Key Features:

• Integrated HART Modems: Remote calibration and diagnostics of smart field devices.

• Deterministic Redundancy: Primary/secondary operation with <10 ms switchover in redundant IOTAs.

• Loop Integrity Monitoring: Open Wire & Readback diagnostics with immediate alarms.

• Safe-State Configurable: FAILOPT options include Hold Last Value, Shed Low (4 mA), or Shed High (20 mA).

Typical Applications

• Critical Valve Control: Large globe/butterfly valves in hydrocarbon processing.

• Pump Speed Regulation: VFD control for water treatment or cooling systems.

• Heater/Burner Management: Fuel gas valve control for precise temperature profiles.

• Batch Chemical Dosing: Accurate control of dosing pumps via 4–20 mA signals.

FAQ

Q1: Can I replace a CC-PAOH01 with CC-PAOH51?
A1: Yes, backward compatible; ensure Experion R410 or higher for recognition.

Q2: Difference between -176 and -100?
A2: -176 has G3 conformal coating, offering superior protection against corrosive gases like H₂S.

Q3: Is a separate HART multiplexer required?
A3: No, HART modems are integrated; digital data passes through Series C I/O link.

Q4: How to handle a "Bad PV" or Readback Alarm?
A4: Check wiring and load resistance. Loads above 800 Ω may cause readback errors.