490NAC0100

Configured for Hot Standby CPU physical media adaptation in Modicon M580 platforms, the Schneider Electric 490NAC0100, also cataloged as the 490NAC0100 SFP Transceiver Adapter Module, provides direct physical/electrical execution. It converts an optical or default Small Form-factor Pluggable (SFP) socket into a standard 8P8C copper Ethernet terminal. Designed specifically for Modicon M580 redundant processor architectures, this ruggedized metallic enclosure facilitates high-speed, deterministic Hot Standby synchronization data transfer between primary and standby Programmable Automation Controllers (PACs).

Hardware Specifications

Parameter	Specification
Model	490NAC0100
Brand	Schneider Electric
Origin	France
Weight	58.0 g
Dimensions	122.0 mm x 80.0 mm x 23.0 mm (packaged)
Operating Temp	0 to 60 deg C
Power Consumption	Passive / SFP Bus Driven (< 1.5 W)
Physical Interface	Standard SFP Port to 1x RJ45 Female Connector
Transmission Speed	1 Gbit/s (1000BASE-T Ethernet)
Enclosure Material	Metallic Housing
System Compatibility	Modicon M580 HSBY CPU Series
Software Environment	EcoStruxure Control Expert

Ethernet/IP Deterministic Network & Firmware Flash Characteristics

The 490NAC0100 is engineered to maintain high backplane bus communication velocity and deterministic state-transfer timing within Schneider Electric EcoStruxure topologies. The hardware features built-in impedance matching and low-latency physical layer translation to preserve time-critical packet integrity across the HSBY link.

• Backplane Bus Interface: Interfaces directly with the SFP interface slot on M580 CPU modules (such as BMEP584040S or BMEP586040), maintaining deterministic sync update cycles down to sub-millisecond levels.
• I/O Density & Switching: Operates transparently to the network protocol layer, allowing full compatibility with Ethernet/IP and Modbus TCP/IP traffic while maintaining channel isolation and reducing physical layer link dropouts.
• Firmware Flash Compatibility: Requires no independent firmware flash update; configuration parameters and physical state auto-negotiation are handled natively via the host M580 CPU system software.

Frequently Asked Questions

Q: Can the 490NAC0100 be inserted or removed while the host M580 CPU is powered on?

A: Yes. The 490NAC0100 supports standard Hot Swap functionality. However, removing the adapter from an active Hot Standby CPU interrupts the primary-standby state synchronization loop, forcing the redundant partner processor into a standalone state or triggering an optical link failure system event.

Q: Is standard Cat5e or Cat6 cabling suitable for use with this adapter's RJ45 connection?

A: Standard industrial-grade Cat5e or Cat6 STP (Shielded Twisted Pair) copper cabling with 100-ohm impedance is recommended to achieve the full 1 Gbit/s link speed while mitigating ambient industrial electromagnetic interference.

Field Installation Guidelines

• ESD Protection: Always ground yourself using an anti-static wrist strap before handling or inserting the 490NAC0100 module to prevent static discharge damage to internal PHY components.
• Mechanical Insertion: Align the adapter with the SFP slot of the M580 HSBY CPU module and slide it horizontally until the latch mechanism locks firmly into place. Do not force the module into the port.
• Cable Strain Relief: Secure the connected Ethernet patch cable within the panel wire duct to eliminate mechanical stress on the adapter's RJ45 jack and prevent physical disconnection due to field vibration.
• Grounding & Shielding: Ensure the RJ45 cable shield is properly bonded at both cable terminations to maintain galvanic continuity across the cabinet perimeter.

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