Siemens 3RX9307-1AA00 Industrial Network Interface for SIRIUS Systems

Siemens 3RX9307-1AA00 Industrial Network Interface for SIRIUS Systems: Powering the Smart Factory Data Link

The Siemens 3RX9307-1AA00 is a dedicated AS-Interface (AS-i) power supply unit engineered for the SIRIUS control and automation platform. Designed to energize and sustain AS-i network segments in demanding industrial environments, this unit serves as the backbone of field-level communication — bridging sensors, actuators, remote I/O modules, and higher-level control systems into a unified, real-time data network. Whether deployed in automotive assembly lines, process plants, material handling systems, or discrete manufacturing cells, the 3RX9307-1AA00 delivers the stable, conditioned power that AS-i networks require to maintain uninterrupted data flow between field devices and PLC controllers.

In modern smart factory architectures, reliable field-level power is inseparable from reliable field-level communication. The 3RX9307-1AA00 ensures that every node on the AS-i segment — from binary sensors and solenoid valves to analog input modules and safety slaves — receives the consistent 30 V DC supply needed for deterministic, low-latency data exchange. This makes it an essential component in any SIRIUS-based control cabinet where AS-i is used as the primary field bus for distributed I/O.

Network Communication Table

Connected Automation Data Flow

Understanding the 3RX9307-1AA00 requires understanding the data chain it enables. In a typical SIRIUS-based smart factory cell, the AS-i master module — such as the Siemens 3RK1 304-0LS40-0AA0 AS-i master or the CP 343-2 communication processor — sits at the top of the field network, polling all connected slaves in a cyclic scan time of under 5 milliseconds. The 3RX9307-1AA00 provides the decoupled 30 V DC power that allows this master to communicate with up to 62 slave addresses simultaneously over a single unshielded two-wire cable.

At the field level, devices such as the Siemens 3RG78 series inductive proximity sensors, 3SB3 pushbutton modules with AS-i capability, and 3LD2 safety switches with AS-i slave interfaces connect directly to the AS-i segment. The 3RX9307-1AA00 ensures each of these devices receives stable power while simultaneously transmitting their binary or analog status data upstream to the AS-i master without signal degradation or bus collisions.

The AS-i master then forwards aggregated field data to a SIMATIC S7-1500 PLC via PROFINET, where the CPU processes real-time inputs and executes control logic. For distributed architectures, the ET 200SP remote I/O system can be integrated alongside the AS-i network, expanding the I/O footprint without additional wiring complexity. SINAMICS G120 variable frequency drives connected via PROFIBUS DP or PROFINET receive speed and torque commands from the S7-1500, while their operational status — current draw, fault codes, running frequency — is fed back through the network for SCADA visibility.

At the supervisory level, a SIMATIC HMI KTP700 Basic panel or KTP900 Basic panel provides operators with real-time visualization of the AS-i network status, including slave diagnostics, bus voltage levels, and device fault indicators. The SCALANCE X208 industrial Ethernet switch aggregates PROFINET traffic from multiple control cabinets and routes it to the plant SCADA server, where historians log every data point for trend analysis, OEE calculation, and predictive maintenance workflows. The 3RX9307-1AA00 is the silent enabler of this entire chain — without stable AS-i bus power, none of these data flows are possible.

For installations requiring gateway functionality between AS-i and higher-level networks such as PROFIBUS DP or Industrial Ethernet, the Siemens 3RK1 922-0BA00 AS-i/PROFIBUS gateway bridges the two network layers, allowing legacy AS-i field devices to participate in modern PROFINET-based architectures. The 3RX9307-1AA00 continues to supply the AS-i segment in these hybrid topologies, ensuring backward compatibility while the plant migrates toward Industry 4.0 standards.

Solving Data Isolation in Industrial Sites

One of the most persistent challenges in industrial automation is data isolation — the condition where field devices, control systems, and enterprise software operate in disconnected silos, preventing real-time visibility and coordinated response. The 3RX9307-1AA00 directly addresses this challenge by enabling a robust, standards-compliant AS-i network that integrates seamlessly with higher-level communication layers.

In plants where legacy wiring has created protocol fragmentation — with some zones running AS-i, others on PROFIBUS, and newer cells on PROFINET — the 3RX9307-1AA00 ensures the AS-i segments remain stable and fully powered, allowing gateway devices to translate between protocols without data loss. This eliminates the need for costly rewiring projects and allows incremental modernization of the field network.

Remote monitoring and diagnostics are significantly enhanced when the AS-i bus operates at full capacity. With the 3RX9307-1AA00 maintaining bus voltage within the AS-i specification, the AS-i master can continuously report slave status, address conflicts, and power faults to the SCADA system. Maintenance teams receive alarm notifications before a bus fault causes a production stoppage, enabling predictive intervention rather than reactive repair.

Production line transparency — knowing exactly which device is active, which is in fault, and which is consuming abnormal current — becomes achievable when the AS-i network is properly powered and all slaves are communicating. The 3RX9307-1AA00 supports this transparency by providing the electrical foundation for a fully populated, fully communicating AS-i segment. System expansion is equally straightforward: adding new AS-i slaves to an existing segment requires no additional power infrastructure as long as the 3RX9307-1AA00’s rated output capacity is not exceeded, making it a scalable solution for growing automation systems.

Every unit is tested before shipping to verify output voltage accuracy, decoupling performance, and compliance with AS-i power supply specifications. A 12-month warranty covers all units, providing procurement teams and maintenance engineers with the confidence needed for long-term project planning and spare parts management.

Industrial Connectivity FAQ

Q1: What is the maximum number of AS-i slaves the 3RX9307-1AA00 can support on a single segment?
A: The AS-i specification allows up to 31 standard slaves or 62 A/B slaves per segment. The 3RX9307-1AA00 provides the power supply for the full segment capacity, but the actual number of slaves supported also depends on the current consumption of each slave device and the total cable length of the AS-i network.

Q2: Is the 3RX9307-1AA00 compatible with SIMATIC S7-300 and S7-1500 AS-i master modules?
A: Yes. The 3RX9307-1AA00 is designed to work with all standard AS-i master modules, including the CP 343-2 for S7-300 systems and the CM AS-i Master ST for S7-1500 systems. It complies with the AS-i specification IEC 62026-2, ensuring broad compatibility across Siemens SIMATIC platforms and third-party AS-i masters.

Q3: How does the 3RX9307-1AA00 contribute to network stability in environments with electrical noise?
A: The unit incorporates AS-i compliant decoupling circuitry that isolates the AS-i data signal from the power supply output, preventing conducted interference from corrupting bus communication. This is critical in environments with variable frequency drives, contactors, and other noise-generating equipment operating in close proximity to the AS-i cable.

Q4: What warranty and pre-shipment testing does the 3RX9307-1AA00 come with?
A: All units are tested before shipping to verify electrical performance and AS-i compliance. A 12-month warranty is included, covering manufacturing defects and performance failures under normal operating conditions. For procurement inquiries, spare parts planning, or technical support, contact our team directly.

© 2026 ZYPLC. All rights reserved.
Original Source: https://zyplc.com
Contact: +86 19859288691 | plc.sales@zyplc.com