Product Overview

The Honeywell CC-GAOX11 (PN: 51308336-175) is a 16-channel Redundant Analog Output IOTA with Galvanic Isolation (GI), designed for hazardous or electrically noisy environments. It serves as the mounting base for a redundant pair of CC-PAOX01 modules, providing high-integrity 4–20 mA signals to field devices like valve positioners and actuators.

This 12-inch vertical IOTA prevents field electrical faults from affecting the C300 controller and eliminates ground loop interference, ensuring reliable signal integrity in large-scale industrial plants. The -175 G3 coating protects against moisture, corrosion, and industrial gases.

Technical Data

Key Features:

• Superior Signal Integrity: Each channel is galvanically isolated, preventing ground loop errors.

• Integrated Protection: Isolation barriers shield the control system from high-voltage surges.

• Hot-Swappable Redundancy: Faulty modules can be replaced without disconnecting field wiring.

• HART Transparency: Full digital communication is maintained for remote diagnostics.

Typical Applications

• Offshore Oil Platforms: Actuating subsea valves under high electrical noise and corrosive conditions.

• Electrolytic Processes: Controlling valves in chlorine or aluminum plants with massive ground loop potentials.

• Hazardous Area Control: Class I, Div 2 / Zone 2 installations where energy-limiting isolation is required.

• Remote Pumping Stations: Managing flow control valves in locations with unstable grounding or electrical surges.

FAQ

Q1: Does the CC-GAOX11 require external isolation barriers?
A1: No. The galvanic isolation is integrated, eliminating the need for third-party barriers and saving cabinet space.

Q2: Difference between CC-TAOX11 and CC-GAOX11?
A2: CC-TAOX11 is a standard redundant AO IOTA. CC-GAOX11 provides Galvanic Isolation for enhanced protection against noise, ground loops, and surges.

Q3: Can I use CC-PAOH01 (standard HART AO) on this board?
A3: No. Only the CC-PAOX01 module is compatible with the GAOX11 isolation circuitry.

Q4: What does the -175 suffix indicate?
A4: It confirms G3 conformal coating, which protects against corrosion caused by humidity and industrial gases such as sulfur dioxide.