Model Interpretation

B884 = Independent PID Intelligent Control Module Series; 002 = Dual PID Closed-loop Standard Specification, with built-in 2 complete PID calculation channels, integrated hybrid IO terminal definition, different from the single-loop version. Technical Specifications

Loop configuration: 2 independent PID closed-loop systems, supporting four control algorithms (P/PI/PD/PID), each module occupies 4 consecutive register addresses of the PLC

Integrated IO resources: 4 AI (4-20mA/0-10V), 2 AO (4-20mA), 2 thermocouple inputs (J/K/E/T), 1 pulse DI, 2 24VDC DI, 2 24VDC transistor DO

Electrical power consumption: 5VDC@50mA, 4.3VDC@2mA, single slot rack installation position

Anti-interference indicators: Normal suppression at 50/60Hz industrial frequency 60dB, common mode suppression > 90dB, common mode withstand voltage peak 180VAC/DC

Form and weight: 51 (W) × 203 (H) × 280 (D) mm, net weight approximately 1.59kg

Environmental specifications: Operating temperature 0-60℃, storage temperature -40-85℃, humidity < 80% RH without condensation, IP20 cabinet installation

Interface and matching base

Universal wiring base AS-8535-000, fully compatible with B883 cam/counter series base, cannot be combined with B883-200/201 temperature measurement special base.

Core functions

Hardware operates independently with dual PID regulation, parameters are downloaded by SW-BDD-3DA configuration software, PLC only issues set values and reads measured values, significantly reducing CPU load; thermocouple has built-in cold junction compensation, analog quantities are automatically converted to engineering units; panel operation/failure dual LED indicators; supports PID positive/negative action switching, output limit, integral separation, open circuit fault alarm; two DO can drive solenoid valves/solid state relays for position regulation, AO drives regulating valves for continuous regulation. Applicable scenarios

Plastic extrusion machine material temperature closed-loop control, segmented temperature control in heat treatment kiln, dual-loop regulation of temperature and pressure in chemical reaction vessels, PID control of boiler water temperature and wind pressure, constant temperature system for chemical fiber spinning box.

Operation and Maintenance

Directly insert Modicon800 standard I/O slots; PID oscillation priority for setting P/I/D parameters; check and compensate the polarity and shielding grounding of thermocouples for abnormal conditions; investigate and troubleshoot analog signal drift in the field by checking the power supply and cable shielding of the transmitters; the frame can be mixed-installed with the entire series of special IO modules of B883.