Description
Honeywell CC-PAIH02
Technical Specifications 16 channels, 12 single-ended and 4 differential; input signal includes 4-20mA, 1-5VDC, 0-5VDC; A/D conversion resolution 16 bits; full-scale accuracy ±0.075%; backplane 24VDC power supply; operating temperature 0℃~60℃; storage temperature -40℃~85℃; humidity 5%~95% non-condensing; support HART 5/6/7 protocol; non-incendive loop power supply for two-wire transmitters; open wire, short circuit and over-range diagnosis.
Functional Features It realizes simultaneous acquisition of analog control signal and HART digital information. Each channel has independent signal conditioning and HART modem. It supplies limited non-incendive power to two-wire smart transmitters. It identifies transmitter fault, loop disconnection and signal overload. It supports hot swap and redundant configuration with CC-TAIX11 redundant IOTA. It can carry out asset management and predictive maintenance of field instruments through HART information.
Application Scenarios Critical measurement loop of main reaction unit in petrochemical industry; HART smart transmitter signal acquisition of power plant main control system; high-precision flow and pressure monitoring of natural gas long-distance pipeline; temperature and pressure measurement of fine chemical batch reactor; key parameter monitoring of pharmaceutical sterile production line.
Performance Parameters CMRR 70dB DC~60Hz; NMRR 19dB at 60Hz; single-pole RC filter -3dB cutoff at 6.5Hz; HART digital communication does not interfere with the stability of 4-20mA analog control loop; the module has data CRC check mechanism.
Material Composition Multi-layer FR4 flame retardant PCB with G3 conformal coating. Gold-plated backplane connector. Flame retardant PC front panel. Independent HART modem chip for each channel. High-precision reference voltage source and sampling resistor. Surge suppression components on each input channel.
Structural Characteristics Series C single-slot vertical plug-in IOM card. Front panel equipped with power, run, HART communication and channel fault LED indicators. Elastic buckles on both sides for rack locking. Fool-proof protrusion, matched with TAIX series IOTA termination base. Passive heat dissipation without fan.
Working Principle The 4-20mA or voltage signal of the field HART transmitter is transmitted to the matched TAIX01 non-redundant IOTA or TAIX11 redundant IOTA. After signal conditioning, the signal is sent to CC-PAIH02. The module completes analog-to-digital conversion and demodulates HART digital signal superimposed on the current loop. The primary measurement value and equipment diagnostic data are uploaded to C300 controller through Series C backplane bus. The module judges loop fault by detecting loop impedance and signal amplitude.
Installation Requirements Vertical installation in Series C I/O rack, matched with TAIX01 or TAIX11 termination base. HART instrument signal cable adopts shielded twisted pair, shielding layer single-point grounding in control cabinet. Analog signal cables and power cables are laid separately. Cabinet grounding resistance ≤4Ω. Verify the non-incendive parameter matching when applied in hazardous areas.
Usage Notes Set the HART communication address of the smart instrument before loop commissioning. Record the loop calibration parameters before online module replacement and switch the control loop to manual. Do not access AC high voltage signal to the analog input channel. Follow HART multi-drop wiring specifications when multiple instruments share one cable.
