Precision Signal Measurement for Compact 984 Systems
The Schneider PCE984275C delivers high-accuracy analog input processing for the Compact 984 programmable controller family. This module accommodates up to 16 single-ended analog channels, supporting both 4-20 mA current loops and 0-10 V voltage signals. Its sturdy enclosure measures 190 mm in height, 70 mm in width, and 140 mm in depth, fitting standard 19-inch rack installations. The total weight reaches approximately 1.0 kg, providing a solid feel during mounting and cable termination.
Each channel employs a 12-bit successive approximation ADC for reliable conversion across the entire operating range. The following table summarizes the complete technical specifications for this analog input solution:
| Parameter | Specification |
|---|---|
| Product Brand | Schneider Electric |
| Product Model | PCE984275C |
| Product Category | Analog Input Module |
| Platform Compatibility | Compact 984 |
| Number of Channels | 16 (single-ended) |
| Input Signal Types | 4-20 mA, 0-10 V |
| Resolution | 12-bit |
| Conversion Time | 15 ms per channel |
| Dimensions (H x W x D) | 190 mm x 70 mm x 140 mm |
| Weight | 1.0 kg |
| Supply Voltage | 5 V DC (from backplane) |
| Power Consumption | 3.5 W typical |
| Input Impedance | 250 Ω (current), 10 kΩ (voltage) |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Isolation Voltage | 500 V AC (channel-to-backplane) |
Channel Configuration and Signal Integrity
The 16 channels share a common reference, simplifying field wiring and reducing terminal block complexity. Engineers can mix current and voltage inputs across different channels without additional configuration jumpers. Built-in RC filtering attenuates high-frequency noise from nearby power equipment and variable speed drives. This filtering ensures stable readings even in electrically harsh environments with significant interference.
Power Distribution and System Compatibility
The PCE984275C draws its operating power directly from the Compact 984 backplane at 5 V DC, eliminating external power supplies. Total power consumption remains under 3.5 watts, which minimizes heat buildup inside the control cabinet. This low thermal output contributes to overall system reliability and extends component lifespan. The module interfaces seamlessly with 984 CPUs through the standard parallel bus architecture.
Installation Considerations and Environmental Tolerance
Input impedance values of 250 Ω for current loops and 10 kΩ for voltage inputs ensure proper signal loading without affecting field transmitters. Operating temperatures from 0°C to +60°C cover most industrial control room environments. The storage temperature range from -40°C to +85°C protects the module during cold-chain logistics or hot warehouse conditions. A 500 V AC isolation barrier safeguards the backplane logic from accidental overvoltage events.
Details
| Weight | 0.91 kg |
|---|---|
| Dimensions | 110 × 55 × 90 mm |
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