SR3NET01BD Zelio Logic SR3 Ethernet Interface Module Schneider Electric

SR3NET01BD Ethernet Interface Module for Zelio Logic SR3

The SR3NET01BD adds Modbus TCP to Zelio Logic SR3 smart relays. It plugs into the SR3 base as a side module. The RJ45 port runs at 10/100 Mbps. Power comes from the 24V DC base unit. This module turns a stand-alone SR3 into a networked controller. It is active in production. Last verified: 2026-09.

Technical Data

• Brand: Schneider Electric
• Model: SR3NET01BD
• Series: Zelio Logic
• Product type: Ethernet communication interface module
• Compatibility: SR3 24V DC smart relays
• Interface: RJ45 Ethernet 10/100 Mbps
• Protocol: Modbus TCP
• Supply voltage: 24V DC (from base unit)
• Operating temperature: -20 to 55 °C
• Mounting: DIN rail, side-mount on SR3
• Lifecycle: Active, Zelio Logic range

What It Connects To

• Zelio Logic SR3 24V DC smart relays
• SCADA and HMI systems using Modbus TCP
• Ethernet switches and industrial routers
• PLC networks with 10/100 Mbps links
• Remote I/O and data logging gateways

Oiltech Controls Insight

• Engineers use SR3NET01BD to keep legacy SR3 logic online.
• Modbus TCP avoids serial rewiring on existing panels.
• The side-mount design saves DIN rail space.
• Base-powered 24V DC removes extra supply wiring.
• Good choice when the SR3 CPU stays but the network must change.

Installation Notes

• Power down the SR3 base before fitting.
• Slide the module onto the side connector.
• Lock it to the DIN rail clip.
• Connect the RJ45 cable to the LAN port.
• Set the Modbus TCP address in Zelio Soft.

Commissioning and Maintenance

• Verify 24V DC at the base before start-up.
• Ping the module to confirm link speed.
• Check Modbus TCP register mapping.
• Log link errors during the first shift.
• Re-seat the module if the link drops.

Shipping and Warranty

• 12-month warranty on every order.
• Dispatch in 24 to 28 hours.
• Shipping by FedEx, UPS, and DHL.
• Tracking number sent after dispatch.
• Technical check before packing.

Why Buy From Oiltech Controls?

• Over 15 years in industrial automation spare parts.
• Worldwide shipping through FedEx, UPS, and DHL.
• Tested surplus and refurbished options available.
• 12-month warranty for peace of mind.
• Technical verification before every shipment.
• Support for obsolete control systems.

FAQ

Q: Does SR3NET01BD work with all Zelio Logic relays?

A: No. It fits SR3 24V DC smart relays only. Check the base label first.

Q: Can I add this module to a running panel?

A: Yes. Power down the SR3, fit the module, then power up. No extra supply is needed.

Q: What cable should I use for Modbus TCP?

A: Use a shielded Cat5e or Cat6 RJ45 cable. Keep it away from motor cables.

Q: How do I know the module is communicating?

A: Check the RJ45 link LED. Then ping the IP address. Also test one Modbus register.

Q: Is SR3NET01BD a good spare for older SR3 systems?

A: Yes. It is active in production. It keeps legacy SR3 panels networked without a full upgrade.

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