Schneider Electric ASS908022 Modicon S908 I/O Processor

Schneider Electric ASS908022 Modicon S908 Remote I/O Processor Module

Availability: 10 left in stock

DescriptionThe Schneider Electric ASS908022 is a dedicated S908 remote I/O processor module designed for high-availability communication within Modicon 984 and...

SKU: ASS908022

Manufacturer: Schneider
Product No.: ASS908022
Product Type: Remote I/O Module
Product Origin: USA
Payment:T/T, Western Union
Weight: 650g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Description

The Schneider Electric ASS908022 is a dedicated S908 remote I/O processor module designed for high-availability communication within Modicon 984 and Quantum PLC architectures. This module serves as a critical interface for managing deterministic data routing across distributed remote I/O networks. It is engineered for demanding industrial environments, including power generation, petrochemical processing, and heavy industrial automation, where reliable communication and low-latency signal transmission are essential for process stability.

Features

Supports deterministic token-passing protocol for consistent network timing.
Dual-channel architecture (Channel A and Channel B) enables seamless redundant physical bus operation.
Automatic switchover capability detects line attenuation or physical breaks within a single scan cycle.
Integrated galvanic isolation protects backplane logic from electromagnetic interference and electrical surges.
Directly maps remote drop I/O registers into the controller memory map for streamlined data access.

Applications

This module is typically deployed in large-scale distributed control systems that utilize S908 coaxial communication backbones. It is ideal for applications requiring long-distance I/O connectivity, redundant communication paths to prevent downtime, and integration with legacy Modicon 984 or Quantum controller platforms.

Technical Specifications

Model	ASS908022 (S908 022)
Brand	Schneider Electric
Network Interface	Dual BNC connectors (Channel A/B)
Transmission Medium	75 Ohm RG-6 or RG-11 coaxial cable
Data Rate	1.544 Mbps
Max Drop Capacity	32 remote I/O stations
Max Distance	4500 m (with repeaters) / 1500 m (point-to-point)
Power Requirements	850 mA at 5 VDC (from backplane)
Operating Temperature	0 to 60 deg C
Storage Temperature	-40 to 85 deg C

Installation Guidelines

Ensure the PLC chassis power is disconnected before inserting or removing the module to prevent damage to the backplane pins.
Seat the module firmly into the designated slot and secure it using the integrated locking mechanisms.
Use high-quality 75 Ohm coaxial cable (RG-6 or RG-11) for network runs; ensure proper termination at all drop points to prevent signal reflection.
Maintain separation between communication cabling and high-voltage power lines to minimize EMI.
Verify that the dual-channel BNC connections are secure and that the cable shielding is properly grounded at the network source.

FAQ

Is this module compatible with Quantum series PLC backplanes? Yes, the ASS908022 is designed for compatibility with Modicon 984 and Quantum backplane structures.

What happens if one of the coaxial cables fails? The module features redundant bus architecture and will perform an automatic switchover to the secondary channel within a single network scan cycle if a fault is detected on the primary path.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.