This input module captures digital signals from field sensors and pushbuttons with high precision. The Schneider ASB827000 offers 16 discrete input channels for 24 VDC logic signals. Each channel accepts voltages from 11 VDC to 30 VDC, ensuring broad compatibility. Built-in input filtering eliminates false triggers from electrical noise and contact bounce. This module converts raw field data into usable logic states for the main controller.
Mechanical Dimensions and Construction Quality
The module measures 105 mm in height, 85 mm in depth, and 40 mm in width. This slim profile saves valuable space inside your control panel. Weighing only 0.31 kg, the ASB827000 simplifies mounting and reduces cabinet loading. A durable thermoplastic enclosure protects internal circuits from dust and physical impact. This housing carries an IP20 rating for safe use in protected indoor environments.
Technical Specifications at a Glance
| Specification | Detail |
|---|---|
| Input Channels | 16 (discrete, 24 VDC) |
| Input Voltage Range | 11 – 30 VDC |
| Nominal Voltage | 24 VDC |
| Input Current | 7 mA per channel (typical) |
| Dimensions (H × W × D) | 105 mm × 40 mm × 85 mm |
| Weight | 0.31 kg |
| Terminal Block | 28‑pin spring‑clamp |
| Wire Gauge Range | 0.2 – 2.5 mm² |
| Input Delay | 1 ms (configurable filtering) |
| Backplane Current | 100 mA at 5 VDC |
| External Supply | 24 VDC ±10% |
| Power Dissipation | 2.5 W |
| Isolation Voltage | 1500 VAC (optocoupler) |
| Temperature Range | -25 °C to +70 °C |
| Humidity Range | 5% – 95% RH (non‑condensing) |
| Standards | IEC 61131‑2, UL 508 |
| Protection Rating | IP20 |
Interface and Connectivity Features
A 28‑pin spring‑clamp terminal block provides secure and reliable wiring connections. This terminal block accepts solid or stranded wires from 0.2 mm² to 2.5 mm². Front‑panel LEDs indicate the status of each input channel individually. These LEDs also display supply voltage presence and internal fault conditions. An integrated backplane connector ensures high‑speed data transfer to the CPU.
Power Consumption and Energy Buffering
The module draws 100 mA from the 5 VDC backplane supply for internal logic operations. It also requires an external 24 VDC ±10% supply for the input circuits. An onboard 33 µF capacitor provides short‑term energy storage for signal stability. This capacitor maintains input states during power dips lasting up to 8 ms. Total power dissipation stays at a low 2.5 W under full load.
Internal Architecture and Component Count
Sixteen optocouplers provide galvanic isolation between the field and logic sides. This isolation withstands 1500 VAC, protecting the controller from voltage spikes. A programmable filter circuit allows you to adjust input delays from 0.5 ms to 5 ms. The Schneider ASB827000 includes an EEPROM for storing calibration and configuration data. The PCB contains 64 resistors, 48 capacitors, and 16 optocoupler ICs. This component density ensures reliable operation across the entire temperature range.
Environmental Specifications and Certifications
This input module operates consistently from -25 °C to +70 °C ambient temperature. It also tolerates relative humidity between 5% and 95% without condensation. The ASB827000 meets IEC 61131‑2 and UL 508 safety standards. These certifications guarantee compatibility with global industrial automation systems.
Details
| Weight | 0.31 kg |
|---|---|
| Dimensions | 105 × 40 × 85 mm |
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