Siemens 3RX9306-1AA00 AS-Interface Power Supply

Product Details

3RX9306-1AA00 Product Description

The Siemens 3RX9306-1AA00 is a dedicated AS-Interface (AS-i) power supply engineered to deliver stable, conditioned DC power across the AS-i bus network, forming the electrical backbone of distributed sensor-actuator control architectures. Designed within the SIRIUS modular automation ecosystem, this unit ensures that every node on the AS-i segment — from binary sensors and solenoid valves to indicator lights and safety slaves — receives consistent, regulated voltage and current, regardless of cable length or load variation. In modern industrial control environments where uptime, signal integrity, and modular scalability are non-negotiable, the 3RX9306-1AA00 serves as a foundational infrastructure component that enables reliable, long-term system operation.

AS-Interface technology simplifies field-level wiring by combining power and data on a single two-wire cable, and the 3RX9306-1AA00 is purpose-built to support this architecture. It provides the regulated 29.5–31.6 V DC output required by the AS-i specification, with integrated data decoupling to prevent interference between the power supply and the AS-i communication signal. This decoupling function is critical in high-density installations where multiple AS-i masters — such as the Siemens CP 343-2 or CP 243-2 — manage dozens of slaves across multiple segments. The power supply's robust design accommodates the full AS-i current budget, supporting up to 31 standard slaves or 62 A/B slaves per segment without signal degradation.

Within a layered Siemens control architecture, the 3RX9306-1AA00 integrates seamlessly at the field power layer, working in coordination with SIMATIC S7-300 or S7-1200 PLCs at the control layer, PROFIBUS DP or PROFINET gateways at the communication layer, and SIRIUS 3RM1 motor starters or 3RK1 compact starters at the execution layer. The power supply's stable output directly supports the performance of AS-i safety slaves compliant with IEC 62061 and EN ISO 13849, enabling safe machine architectures without requiring separate safety power rails. When paired with the Siemens 3RK1904-2AB01 AS-i safety monitor, the 3RX9306-1AA00 forms a complete, certified safety loop at the field level.

For installations requiring redundancy, the 3RX9306-1AA00 can be deployed in parallel configurations using Siemens 3RX9501 redundancy modules, ensuring continuous AS-i bus power even during single-unit maintenance or failure events. This redundancy capability is particularly valuable in process industries — petrochemical plants, water treatment facilities, and power generation stations — where unplanned downtime carries significant operational and safety consequences. The unit's DIN rail mounting and compact form factor simplify integration into standard control cabinets alongside SIRIUS 3RT contactors, 3RV circuit breakers, and 3NJ4 fuse switch disconnectors.

Diagnostics and commissioning are streamlined through the power supply's LED status indicators, which provide immediate visual feedback on output voltage, overload conditions, and short-circuit events. When integrated with a SIMATIC HMI panel such as the KTP700 Basic or TP1500 Comfort, operators can monitor AS-i segment health in real time, reducing mean time to repair (MTTR) and supporting predictive maintenance strategies. The 3RX9306-1AA00's compatibility with the Siemens TIA Portal engineering framework further accelerates commissioning, allowing engineers to configure, test, and document the AS-i network within a unified software environment.

NANKMOS maintains verified stock of the Siemens 3RX9306-1AA00, with pre-shipment functional testing performed on every unit. Each unit is covered by a 12-Month Warranty, and our engineering team provides Contextual Integration support to assist with AS-i segment design, power budget calculations, and system compatibility verification. Lead times are confirmed at order placement, and expedited shipping is available for urgent project requirements.

The 3RX9306-1AA00 operates as the power foundation of a complete AS-Interface automation platform. At the control layer, SIMATIC S7-300 CPUs (e.g., CPU 315-2 DP) or S7-1200 CPUs manage process logic and communicate with the AS-i master module. The Siemens CP 343-2 AS-i master connects the PLC backplane to the AS-i segment, coordinating cyclic data exchange with all connected slaves. At the field level, Siemens 3RK1 compact starters and 3RM1 reversing starters act as AS-i actuator slaves, receiving motor control commands directly over the AS-i bus without additional wiring harnesses.

Safety integration is achieved through the Siemens 3RK1904-2AB01 AS-i safety monitor, which evaluates safety slave inputs — emergency stops, light curtains, safety door switches — and generates safe shutdown signals within the same AS-i segment powered by the 3RX9306-1AA00. For communication layer extension, Siemens AS-i/PROFIBUS gateways (e.g., 3RK1904-0BA00) bridge the AS-i field network to the plant-level PROFIBUS DP backbone, enabling integration with SCADA systems and MES platforms. SIMATIC KTP700 Basic HMI panels provide operator-level visibility into AS-i segment diagnostics, slave status, and power supply health. In cabinet design, the 3RX9306-1AA00 is typically installed alongside SIRIUS 3RT2 contactors, 3RV2 motor protection circuit breakers, and 3NJ4 fuse switch disconnectors, forming a compact, standardized control cabinet assembly that supports modular expansion and long-term maintainability.

The Siemens 3RX9306-1AA00 is deployed across a broad range of industrial sectors where AS-Interface architecture provides cost-effective, reliable field-level connectivity. In automotive manufacturing, AS-i powered by the 3RX9306-1AA00 connects body shop sensors, weld gun solenoids, and conveyor motor starters across assembly line segments, reducing wiring complexity by up to 80% compared to conventional parallel wiring. In water and wastewater treatment plants, the power supply supports AS-i slaves monitoring pump status, valve positions, and flow sensor outputs across distributed pump stations, with the integrated data decoupling ensuring signal integrity over long cable runs up to 100 m per segment (extendable to 300 m with repeaters).

In the power generation and energy sector, the 3RX9306-1AA00 powers AS-i networks in switchgear rooms and substation automation panels, where its wide operating temperature range (-25 °C to +60 °C) and ATEX Zone 2 certification support deployment in classified hazardous areas. Petrochemical and refinery applications leverage the unit's robust short-circuit protection and overload recovery to maintain continuous field bus power in environments with high electromagnetic interference. In food and beverage packaging lines, the compact DIN rail form factor and IP20 protection class allow integration into hygienic control cabinets, while the 12-Month Warranty and NANKMOS stock availability ensure rapid replacement support for high-throughput production environments. Mining and metallurgical applications benefit from the unit's ability to maintain stable AS-i bus voltage across extended cable networks connecting remote sensor clusters to central control rooms.

Q1: Can the 3RX9306-1AA00 support both standard and safety AS-i slaves on the same segment?Yes. The 3RX9306-1AA00 provides the regulated AS-i bus voltage required by both standard slaves (per IEC 62026-2) and AS-i Safety at Work slaves (per IEC 62061). Safety slaves are evaluated by a separate AS-i safety monitor (e.g., Siemens 3RK1904-2AB01), which operates on the same powered segment. No separate safety power rail is required, simplifying cabinet design and reducing component count.

Q2: How do I calculate the power budget for my AS-i segment using the 3RX9306-1AA00?Sum the current consumption of all AS-i slaves on the segment (typically 30–100 mA per slave) and add a 20% margin for cable resistance losses and future expansion. The 3RX9306-1AA00 supports up to 8 A output current, sufficient for fully populated segments with 31 standard or 62 A/B slaves. For segments exceeding this budget, deploy additional 3RX9306-1AA00 units on separate AS-i segments via additional CP 343-2 or CP 243-2 master modules.

Q3: What is the warranty coverage and lead time for the 3RX9306-1AA00 from NANKMOS?Every Siemens 3RX9306-1AA00 supplied by NANKMOS is covered by a 12-Month Warranty covering manufacturing defects and functional failures under normal operating conditions. Units undergo pre-shipment functional testing before dispatch. Stock availability and lead times are confirmed at order placement. Expedited shipping is available for urgent project requirements. Contact [email protected] or +86 18359268345 for availability confirmation and technical pre-sales support.