Description
Honeywell CC-PAOX01
Technical Specifications 16 analog output channels; output signal 4-20mA; load resistance range meets standard valve positioner requirements; A/D conversion resolution 16 bits; backplane 24VDC power supply; operating temperature 0℃~60℃; storage temperature -40℃~85℃; humidity 5%~95% non-condensing; support HART protocol pass-through; each channel has independent short-circuit current limiting protection; support open-circuit diagnosis.
Functional Features It converts the control output calculated by the controller into stable current signal to realize closed-loop regulation. It transmits HART digital signal to smart valve positioner on the current loop. It detects output loop open circuit and short circuit and uploads fault alarm. It supports hot swap and redundant configuration. It can set fail-safe output state when module fault occurs. It maintains high linearity of output signal under load change.
Application Scenarios Flow, liquid level and temperature regulating valve control of chemical process loop; boiler water supply and fuel gas regulating output of power plant; valve control of oil and gas pipeline pressure regulation; temperature control of pharmaceutical reaction kettle; pH adjustment output of water treatment plant.
Performance Parameters Output linearity error is less than ±0.075% full scale; the short-circuit protection action is rapid to limit the channel current; the HART carrier signal does not interfere with the basic 4-20mA control signal; the output signal drift is extremely small under the change of load resistance.
Material Composition Multi-layer FR4 flame retardant PCB with G3 conformal coating. Gold-plated backplane connector. Gray flame retardant PC front panel. High-precision D/A conversion chip. Each channel is equipped with independent current limiting and transient suppression components.
Structural Characteristics Series C standard single-slot vertical IOM card. Front panel with power, run, communication and channel fault LED indicators. Elastic buckles on both sides for rack locking. Fool-proof protrusion, which can only be matched with supporting TAOX series analog output IOTA base. Passive heat dissipation structure.
Working Principle C300 controller sends digital control command to CC-PAOX01 through Series C backplane bus. The module converts digital quantity into analog current signal through D/A chip, and superimposes HART digital signal on the current loop. The current signal is transmitted to the field valve positioner through the matched TAOX IOTA termination base. The module continuously monitors the loop load state and identifies short-circuit or open-circuit fault.
Installation Requirements Vertically installed on Series C I/O rack, matched with dedicated TAOX IOTA base. Valve signal cables use shielded twisted pair, shielding layer single-point grounding in cabinet. Signal cables and power cables are laid separately. Cabinet grounding resistance ≤4Ω. Check the load resistance of the valve positioner before commissioning.
Usage Notes Switch the control loop to manual mode before online replacement of the module to prevent valve jitter. Do not short the output channel for a long time. When commissioning HART valve, use supporting configuration software. The maximum load resistance of each channel shall not exceed the rated specification.
