Model Explanation

B883 = High-performance intelligent counting module series; 001 = 2-channel 50kHz orthogonal counting, 6 auxiliary DI channels, 3 source-type DO channels, 24VDC level specification, different from the B882 series 30kHz low-frequency counting card. Technical Specifications

Counting channels: 2 independent add/subtract counters, supporting single-phase pulse and AB orthogonal encoder signals

Pulse specifications: Input frequency 0~50kHz, quadruple frequency orthogonal counting, compatible with NPN/PNP encoders with 24VDC signal

Auxiliary points: 6 24VDC open-collector digital inputs (reset / gate control / start-stop), 3 24VDC source-type transistor outputs

Single-point load: DO single channel maximum 0.5A, external 24VDC field power supply, group built-in independent fuse

Backplane power consumption: 5VDC@677mA, single-slot rack installation

Dimensions: 51 (W) × 203 (H) × 280 (D) mm, net weight approximately 0.6kg

Environmental parameters: Operating 0~60℃, storage - 40~85℃, humidity < 80% RH without condensation, IP20 indoor protection

Interface and matching base

General screw terminal base: AS-8535-000, compatible with B875 analog quantity and B882 full series module bases.

Core functions

Independent parameter configuration for dual counters, pulse counting, speed conversion, fixed-length measurement; pre-designed values automatically trigger 3 DO switch outputs; 6 DI used as counter reset, hardware latch, start-stop enable; two COUNT operation indicator lights on the panel, channel fault alarm lights; no hardware dip switch required, software configures counting mode. Applicable scenarios

High-speed spindle encoder positioning, packaging machine fixed-length cutting, high-speed belt scale speed metering in meters, chemical fiber spinning equipment, renovation of coal feeding measurement system in old power plants.

Operation and Maintenance

Plug directly into Modicon 800 standard I/O slots; for encoder count anomalies, priority should be given to checking the grounding of the shielding wire and the 24V power supply; DO drives for solenoid valves must be equipped with rectifier diodes; the same chassis can accommodate B875 analog cards and B882 analog/digital counting cards.