SCHNEIDER AS-B882-239 counter module

SCHNEIDER AS-B882-239

The Schneider AS-B882-239 is a high-speed counter module for Schneider Electric Modicon series PLCs. It is commonly used as a side-mounted module for CPUs in the Modicon M340, Quantum, and M580 series. This module supports high-frequency counting and is suitable for industrial automation applications that require precise measurement of high-speed rotating shafts, flow metering, frequency conversion, and similar tasks.

1. Core Functions

High-speed counting: Supports counting frequencies up to 30 kHz in high-frequency mode, and up to 350 Hz in low-frequency mode.
Dual counters: Equipped with two independent counter channels.
Multiple inputs/outputs: Provides 6 auxiliary digital inputs (DI) and 6 auxiliary digital outputs (DO).
Group functionality: Supports configuring multiple counters into the same group for coordinated control.

2. Detailed Technical Specifications

Parameter	Specification
Input channels	6 auxiliary inputs (DI)
Input voltage	0–32 VDC
Input current	8.1 mA at 32 VDC; 5 mA at 28 VDC
Output channels	6 auxiliary outputs (DO)
Output voltage (ON)	Max. 1.0 VDC at 0.5 A; max. 0.4 VDC at 0.1 A
Output leakage current (OFF)	Max. 1.0 mA at 32 VDC
Counter channels	2 channels
Maximum counting frequency	High-frequency mode: 30 kHz; Low-frequency mode: 350 Hz
Reset pulse width	High-frequency mode: min. 13 µs; Low-frequency mode: min. 1.3 µs
Power requirements	+5 VDC: 188 mA; +4.3 VDC: 0 mA; −5 VDC: 0 mA
Physical size	1 slot
Weight	2.94 lb (approx. 1.34 kg)
Other features	Built-in terminal connector and one fuse per group design

3. Typical Applications

High-speed shaft counting: Measuring rotational speed of motors, pumps, fans, and similar equipment.
Flow measurement: Used in conjunction with flow meters to calculate flow rates.
Frequency conversion: Converting analog or pulse signals into frequency-based outputs.
Digital control: Combined with PLC counter function blocks to achieve automated control systems.

Main brand :

ABB Allen-Bradley Alstom Bently Emerson Foxboro

GE MOOG Schneider Woodward HIMA Honeywell

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