Schneider ASB984100 High Speed Discrete Module – Fast I/O Processing

The Schneider ASB984100 captures and outputs discrete signals at high speeds. This high speed discrete module serves the Modicon 984 PLC platform. You can use it for positioning, registration, or high-speed counting applications. The unit processes signals faster than standard discrete I/O modules.

Input and Output Specifications

The Schneider ASB984100 processes inputs in just 0.5 milliseconds. This high speed discrete module updates outputs within 0.3 milliseconds of the logic scan. You can connect encoders, registration sensors, or high-speed counters. The unit provides both sinking inputs and sourcing outputs.

Physical Dimensions and Weight

This high speed discrete module weighs 0.38 kg for stable rack mounting. The unit occupies two slots in a Modicon 984 chassis. Its width reaches 45 mm for dedicated high-speed processing. You can insert the Schneider ASB984100 alongside standard 984 I/O modules.

Interface and Connection Points

A 20-pin female backplane connector handles power and data transfer. The front panel includes a 20-pin male header for field wiring. You will need a separate 20-pin cable or terminal block accessory. Each input channel features a yellow LED indicator for status confirmation. Each output channel includes a green LED for visual feedback.

Energy Storage and Internal Circuitry

The Schneider ASB984100 stores minimal energy for high-speed operation. Small filter capacitors provide 47 µF of total storage per channel. The module does not contain any battery or non-volatile memory. Eight optocouplers isolate inputs from the backplane logic. Eight power MOSFETs drive the output channels directly without relays.

Component Layout and Construction

A dedicated FPGA handles all high-speed I/O processing tasks. Sixteen resistors set the correct current for each input and output circuit. You will find 72 resistors, 48 capacitors, and 6 integrated circuits on the board. The Schneider ASB984100 includes transient suppression diodes on all outputs. A heatsink covers the output MOSFETs for thermal management.

Operational Use and System Integration

Transitioning to this module improves your system’s response to fast events. You can capture registration marks or encoder pulses without missing signals. The module works with standard 24 VDC sensors and small actuators. Use the Schneider ASB984100 for cut-to-length, flying shear, or high-speed packaging lines. For best results, keep wiring short and use shielded cables for input signals.