Siemens 6EP1336-3BA10 System-Ready Power Supply for SITOP PSU100M Architecture

Siemens 6EP1336-3BA10 System-Ready Power Supply for SITOP PSU100M Architecture

The Siemens 6EP1336-3BA10 is a high-performance 24 VDC / 20 A power supply module engineered for seamless integration within the SITOP PSU100M series. In modern industrial control system architecture, the power layer is not a peripheral concern — it is the foundation upon which every other layer depends. From the control layer running SIMATIC S7-300 or S7-400 CPUs, to the I/O layer populated with ET 200M or ET 200S distributed peripherals, to the communication layer managed by PROFIBUS DP or PROFINET gateways, every subsystem relies on a stable, regulated DC supply. The 6EP1336-3BA10 fulfills this role with precision, delivering consistent 24 VDC output across varying load conditions, ensuring that upstream and downstream components operate within their rated electrical parameters at all times.

In a layered automation architecture, the power supply module occupies the foundational tier. Above it sits the control layer — typically a SIMATIC S7-300 CPU such as the CPU 315-2 DP or CPU 317-2 PN/DP — which depends on uninterrupted DC power to execute cyclic scan tasks, manage program memory, and maintain communication with field devices. The 6EP1336-3BA10 provides the current headroom necessary to support not only the CPU module itself but also the backplane bus current demands of signal modules (SM 321, SM 322, SM 331, SM 332) installed in the same rack. This eliminates the need for supplementary bus power boosters in standard rack configurations, simplifying cabinet design and reducing component count.

At the I/O layer, distributed peripherals such as ET 200M interface modules (IM 153-2) and ET 200S power modules draw regulated 24 VDC for both logic supply and field-side sensor/actuator circuits. The 6EP1336-3BA10’s wide-range AC input (85–264 VAC) ensures compatibility with international grid standards, making it suitable for global deployment without hardware modification. Its active power factor correction (PFC) reduces harmonic distortion on the supply network, a critical requirement in facilities where multiple drives, inverters, and switching power supplies share the same distribution panel.

From a redundancy design perspective, the 6EP1336-3BA10 supports parallel operation with the SITOP UPS1600 uninterruptible power supply module. In high-availability applications — such as continuous process control in petrochemical plants or water treatment facilities — the UPS1600 monitors DC bus voltage and seamlessly bridges power interruptions, allowing the SIMATIC CPU to execute a controlled shutdown sequence or maintain operation through brief supply disturbances. This redundancy pairing is a recognized best practice in IEC 61511 functional safety architectures.

The network and communication layer, including CP 343-1 PROFINET communication processors and SCALANCE X series managed switches, also draws from the 24 VDC bus. Stable supply voltage is essential for maintaining deterministic PROFINET cycle times and preventing spurious network resets that could trigger fault states in connected drives or safety PLCs. The 6EP1336-3BA10’s low output ripple and noise specification (typically <50 mV peak-to-peak) ensures that sensitive communication hardware operates without electromagnetic interference from the power supply itself.

At the human-machine interface layer, SIMATIC HMI panels such as the KTP700 Basic or TP1200 Comfort are powered directly from the 24 VDC bus. These panels require stable supply voltage for touchscreen responsiveness and reliable communication with the SIMATIC CPU via PROFINET or MPI. Voltage sags or transients at the power layer translate directly into HMI communication errors, operator screen freezes, and in worst cases, unplanned process shutdowns. The 6EP1336-3BA10’s tight output regulation (<1% static, <5% dynamic) prevents these failure modes.

For the execution layer — comprising SINAMICS G120 variable frequency drives, SIRIUS 3RT contactors, and SIRIUS 3RW soft starters — the 24 VDC supply powers control electronics, brake rectifiers, and safety relay circuits. The 6EP1336-3BA10 provides sufficient current reserve to handle the inrush demands of multiple contactor coils energizing simultaneously during machine startup sequences, without triggering overcurrent protection or causing voltage collapse on the DC bus.

In terms of system scalability, the SITOP PSU100M series is designed for DIN rail mounting within standard control cabinets, allowing engineers to add power supply capacity incrementally as system I/O count grows. The 6EP1336-3BA10 can be installed alongside SITOP selectivity modules (e.g., SITOP PSE200U) to create segmented power distribution, isolating faults to individual circuit branches without affecting the rest of the control system. This architecture is particularly valuable in large-scale packaging lines, automotive assembly systems, and mining conveyor control panels where partial system availability during maintenance is a commercial requirement.

Long-term maintenance efficiency is enhanced by the 6EP1336-3BA10’s diagnostic LED indicators, which provide immediate visual status for input power presence, output voltage OK, and overload/short-circuit conditions. In conjunction with SIMATIC S7 diagnostic buffers and TIA Portal online monitoring, maintenance engineers can correlate power supply events with PLC fault logs, reducing mean time to repair (MTTR) and supporting predictive maintenance strategies.

All units supplied by ZYPLC are covered by a 12-Month Warranty, ensuring that your control system investment is protected against manufacturing defects and premature failure. Our inventory is sourced from verified supply chains, and each unit undergoes functional verification prior to dispatch. Contextual Integration support is available for customers requiring assistance with rack configuration, power budget calculations, or system commissioning.

Architecture Specification Table

Coordinated Control System Design

The 6EP1336-3BA10 is designed to operate as the central power node in a coordinated SIMATIC S7-300/400 control system. A typical architecture integrating this module includes the following components working in concert:

The SIMATIC CPU 315-2 DP serves as the primary controller, executing the user program and managing PROFIBUS DP communication with distributed I/O. It draws its 24 VDC logic supply directly from the 6EP1336-3BA10 via the backplane bus, ensuring that CPU scan cycles are not interrupted by supply instability. Adjacent to the CPU, SM 321 digital input modules and SM 322 digital output modules handle field-level signal acquisition and actuation, with their 24 VDC load circuits also sourced from the same power supply rail.

For analog process variables — temperature, pressure, flow — SM 331 analog input modules and SM 332 analog output modules are installed in the same S7-300 rack. These modules require a stable, low-noise 24 VDC supply to maintain 12-bit or 16-bit measurement accuracy; the 6EP1336-3BA10’s low ripple output directly supports this requirement.

At the distributed I/O level, ET 200M IM 153-2 interface modules connect remote I/O stations via PROFIBUS DP, each requiring their own 24 VDC supply. In multi-drop PROFIBUS segments, the 6EP1336-3BA10 can power the local rack while dedicated SITOP PSU100S modules supply remote ET 200M stations, maintaining electrical isolation between control cabinet and field junction boxes.

The SITOP UPS1600 uninterruptible power supply module is connected in parallel with the 6EP1336-3BA10 to provide buffered DC output during mains interruptions. The UPS1600 communicates with the SIMATIC CPU via USB or PROFINET, enabling the PLC program to initiate a controlled shutdown or data save routine before battery depletion.

Network infrastructure is provided by SCALANCE X208 managed switches, which segment the PROFINET network into deterministic communication domains. These switches are powered from the same 24 VDC bus, and their low power consumption (typically <10 W) represents a negligible load on the 6EP1336-3BA10’s 480 W capacity.

For operator interaction, a SIMATIC KTP900 Basic HMI panel provides process visualization and alarm management. Powered from the 24 VDC bus, the KTP900 communicates with the CPU 315-2 DP via PROFINET, displaying real-time process values and allowing operators to adjust setpoints without requiring engineering workstation access.

Finally, SIRIUS 3RT2 contactors and SIRIUS 3RW44 soft starters in the motor control center (MCC) receive their 24 VDC control signals from the SM 322 digital output modules, with coil circuits protected by SITOP PSE200U selectivity modules that isolate individual branch faults without affecting the main 24 VDC bus.

Application in Layered Automation Systems

The 6EP1336-3BA10 finds application across a broad spectrum of industrial sectors where reliable 24 VDC power distribution is a system-critical requirement.

In manufacturing and automotive assembly, the module powers SIMATIC S7-300 controllers managing robotic welding cells, conveyor indexing systems, and vision inspection stations. The ability to operate across a wide AC input range makes it suitable for both 120 VAC North American facilities and 230 VAC European plants without hardware changes.

In power generation and electrical utilities, the 6EP1336-3BA10 supplies protection relay panels, bay control units, and SCADA remote terminal units (RTUs). Its ATEX Zone 2 certification allows installation in areas where flammable gas concentrations may occasionally be present, such as gas turbine control rooms or substation battery rooms.

In petrochemical and oil & gas processing, the module integrates into SIL-rated safety instrumented systems (SIS) alongside SIMATIC S7-400H redundant CPUs and F-series fail-safe I/O modules. The parallel redundancy capability of the SITOP PSU100M series ensures that a single power supply failure does not compromise the safety function.

In water and wastewater treatment, the 6EP1336-3BA10 powers SIMATIC controllers managing pump stations, dosing systems, and filtration processes. Its wide operating temperature range (-25°C to +70°C) accommodates both heated indoor control rooms and unheated outdoor kiosks in remote pumping stations.

In mining and minerals processing, the module supplies control systems for conveyor drives, crusher controls, and flotation cell automation. The robust short-circuit and overload protection prevents nuisance tripping during the high-inrush startup of large motor contactors, maintaining system availability during production-critical periods.

In food and beverage packaging lines, the 6EP1336-3BA10 powers SIMATIC controllers coordinating filling, capping, labeling, and palletizing stations. Its compact DIN rail form factor allows installation in space-constrained machine control panels, while its high efficiency minimizes heat dissipation within sealed enclosures.

Architecture Engineering FAQ

Q1: Is the 6EP1336-3BA10 compatible with both S7-300 and S7-400 system architectures?
Yes. The 6EP1336-3BA10 provides standard 24 VDC output compatible with all SIMATIC S7-300 and S7-400 CPU modules, signal modules, and communication processors. It is also compatible with S7-1500 systems when used as an external 24 VDC supply for the system power module (PM 70W or PM 190W) or for powering field devices connected to digital I/O modules. The module’s output voltage is adjustable from 22.5 to 28.5 VDC to accommodate specific load requirements within the system architecture.

Q2: Can two 6EP1336-3BA10 units be operated in parallel for redundancy or increased current capacity?
Yes. The SITOP PSU100M series supports parallel operation of multiple units for both N+1 redundancy and load sharing. When operated in parallel for redundancy, a single unit failure does not interrupt the 24 VDC bus, as the remaining unit assumes full load. For increased current capacity beyond 20 A, two units can be paralleled to deliver up to 40 A on a shared bus. No additional coupling modules are required for basic parallel operation, though the SITOP redundancy module (6EP1961-2BA00) is recommended for applications requiring automatic fault detection and alarm signaling.

Q3: What does the 12-Month Warranty cover, and what support is available for system commissioning?
The 12-Month Warranty provided by ZYPLC covers manufacturing defects, component failures, and premature output degradation under normal operating conditions as defined in the Siemens product datasheet. Warranty claims are processed through ZYPLC’s technical support team, with replacement units dispatched within agreed lead times to minimize system downtime. For Contextual Integration support — including power budget calculations, rack configuration review, PROFIBUS/PROFINET topology validation, and on-site commissioning assistance — please contact ZYPLC’s engineering team directly. Our specialists are experienced in SIMATIC S7-300/400/1500 system architecture and can provide application-specific guidance for your control system project.

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