Model Interpretation

B882 = Transistor Digital Output Series; 032 = 32-channel, 24VDC source-type output, with hardware diagnostics for load short-circuit / open-circuit; Grouped into 4×8 channel independent power supply zones, with series suffix indicating the number of points and voltage level. Technical Specifications

Channel layout: 32 points of DO, divided into 4 isolated zones, each group consisting of 8 points. Each group can be independently connected to a 24VDC on-site power supply.

Output type: Source-type (Sourcing/True High) transistor output, with a rated supply of 20~28VDC for the load.

Single channel capacity: Maximum 1A conduction current per point, upper limit of each group is 6A. The total current of the module under full load is ≤ 24A.

Electrical loss: Conduction drop ≤ 0.5VDC @ 1A; Off-state leakage current ≤ 1mA @ 28VDC; Minimum load current 100mA.

Backplane power consumption: Rack 5VDC @ 300mA, 4.3VDC @ 10mA. Only backplane logic power supply, external load power supply.

Diagnostic capability: Hardware fault indicators for load short circuit, circuit open circuit, and undervoltage, alarms for single channel faults are independently reported to PLC.

Size and weight: 51 (W) × 203 (H) × 280 (D) mm, net weight 0.9kg.

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

Interface and matching base

Standard original screw wiring base: AS-8535-000, compatible with the base of the entire B875 analog card series.

Core functions

4 groups of independent power distribution zones, a single group power failure does not affect the remaining channels; Hardware real-time diagnosis for load short circuit / break, the corresponding panel indicator light is on, and the fault bit in the PLC register is marked; Source-type output is compatible with two-wire electromagnetic valves and DC24V on-site indicator lights, no additional diode for continuation current is required. Applicable scenarios

Local electromagnetic valve control for auxiliary equipment in power plants, switch points for chemical valve actuators, indicator circuits for complete equipment, expansion and replacement of the old Modicon 984 system.

Operation and Maintenance

Insert directly into the I/O slots of the Modicon 800 rack, with 4 groups connected separately to the on-site 24V power supply; when the channel fault indicator lights up, prioritize checking for coil short circuits and line breaks; do not directly connect to AC loads; for high-power contactors, a relay needs to be used for conversion.