Schneider Electric AS-P890-300 Modicon 800 Series Remote I/O Processor

Schneider Electric AS-P890-300 Modicon 800 Series Remote I/O Processor

Configured for remote I/O data communication in Modicon 800 Series S908/CRP networks, the Schneider Electric AS-P890-300 (AS-P890-300 Remote I/O Processor) provides physical network execution between PLC control racks and distributed I/O modules. The processor supports selectable 115/230 VAC or 24 VDC power input and remote I/O communication through coaxial network interfaces.

Hardware Specifications

Industrial Control Network Communication Characteristics

The AS-P890-300 operates as a remote I/O communication processor within the Schneider Electric Modicon 800 Series architecture. It manages data exchange between S908/CRP network connections and distributed I/O modules through 75-ohm coaxial cabling.

The module supports remote I/O topology with single or redundant coaxial connections. Its communication structure provides deterministic data transfer at 1.544 MHz, while the I/O scan performance supports processing of up to 256 points within less than 5 ms under specified conditions.

The processor integrates with Schneider Electric PLC systems through backplane and network communication structures. Firmware flash compatibility and rack configuration parameters must match the installed Modicon 800 Series hardware environment.

Frequently Asked Questions

Q: What network interface does the AS-P890-300 use for remote I/O communication? A: The module uses 75-ohm coaxial cabling for S908/CRP remote I/O networks and supports single or redundant cable configurations.

Q: How many I/O points can the AS-P890-300 process? A: The processor supports up to 2048 I/O points, including 1024 input points and 1024 output points.

Q: What power supply configurations are supported by the AS-P890-300? A: The module supports selectable 115/230 VAC or 24 VDC power input configurations with a maximum load rating of 7 A.

Field Installation Guidelines

Install the AS-P890-300 in a compatible Modicon 800 Series rack environment and verify the selected power supply configuration before energizing the module.

Route coaxial communication cables separately from high-voltage power wiring and maintain proper cable shielding practices. Connect cable shields according to the control cabinet grounding design to reduce electrical interference.

Verify connector condition, network termination arrangement, and rack addressing before commissioning. For redundant remote I/O networks, confirm both communication paths are correctly installed and electrically isolated from unrelated signal wiring.