Description
HONEYWELL CC-PAIH01
Technical Specifications Backplane power supply by C300 rack Multi-channel 4-20mA analog input HART signal support for each channel Channel overvoltage and overcurrent protection Opto-isolation design Rack plug-in structure for C300 I/O rack
Functional Features Collect 4-20mA analog measurement signals from field smart transmitters Convert analog current signal into digital engineering value for controller calculation Support HART communication to read instrument diagnostic information and instrument parameters Electrically isolate field circuit and DCS control circuit Detect field wire open circuit and short circuit status Upload module fault and channel wiring fault to Experion operator station
Application Scenarios Chemical, refinery and power plant Experion PKS C300 DCS cabinets Pressure, level, flow and temperature measurement signal collection HART smart transmitter signal acquisition Continuous process closed-loop control signal input
Performance Parameters Operating temperature range 0℃ to 60℃ Relative humidity 5% to 95%, non-condensing High analog conversion accuracy High channel isolation voltage Comply with industrial EMC standards
Material Composition FR-4 multilayer printed circuit board Gold-plated backplane edge connectors High precision analog-to-digital conversion chips HART communication processing circuit Surge suppression components Flame retardant anti-static plastic front panel
Structural Features Standard rack plug-in card structure Front panel with LED indicators for power, communication and fault status Rear gold fingers connect rack backplane bus Anti-reverse insertion positioning notch Model number printed on card surface Cooperate with matched FTA terminal base for field instrument wiring
Working Principle 4-20mA analog signal from field transmitter enters module through FTA terminal base. Signal conditioning circuit adjusts analog signal range, then analog-to-digital converter converts analog signal into digital data. Digital data transfers to C300 controller through backplane bus. HART circuit superimposes and demodulates HART digital signal on analog current loop to realize two-way communication with smart field transmitter. Diagnostic circuit detects loop open and short circuit condition continuously.
Installation Requirements Wear anti-static wrist strap during installation and removal Insert card fully into designated rack slot and tighten fixing screw Complete field transmitter wiring on matched FTA terminal base Cabinet protective grounding must be qualified Use shielded twisted pair cable for field analog signal wiring Verify hardware version compatibility with C300 controller firmware
Precautions for Use Do not plug or unplug the module under power-on state Check loop resistance of each 4-20mA channel before commissioning Do not connect high voltage signal to analog input channels Inspect cable shielding and terminal tightness in regular maintenance Use HART engineering tool to verify instrument communication after installation
