Siemens 6EP1336-2BA00 Energy-Saving Power Supply for Optimized SITOP Automation

Siemens 6EP1336-2BA00 Energy-Saving Power Supply for Optimized SITOP Automation

The Siemens 6EP1336-2BA00 is a high-efficiency SITOP series power supply module engineered for demanding industrial automation environments. Delivering a stable 24 VDC output at 10 A, this unit is purpose-built to reduce energy waste at the power conversion stage — one of the most overlooked sources of inefficiency in modern production lines. By maintaining tight output voltage regulation and achieving conversion efficiencies exceeding 90%, the 6EP1336-2BA00 ensures that downstream controllers, drives, and I/O systems receive clean, consistent power without unnecessary thermal losses or voltage fluctuations that degrade equipment performance over time.

In energy-intensive manufacturing facilities, the power supply is the foundation of every control loop. When a PSU operates inefficiently, the ripple effect extends across the entire automation architecture — from PLC scan cycle instability to erratic servo positioning and unreliable sensor readings. The 6EP1336-2BA00 eliminates these risks by providing a rock-solid DC bus that supports continuous, uninterrupted operation of connected automation components.

Efficiency Performance Table

Energy-Aware Automation Architecture

The 6EP1336-2BA00 is most effective when integrated into a well-designed energy-aware automation architecture. In a typical SIMATIC-based production cell, the power supply feeds a SIMATIC S7-1500 CPU (e.g., 6ES7511-1AK02-0AB0) that orchestrates machine sequencing and energy scheduling. The CPU communicates with distributed I/O via PROFINET, where modules such as the ET 200SP digital input/output module 6ES7131-6BF01-0BA0 handle field-level signal acquisition with minimal self-consumption.

On the drive side, the 6EP1336-2BA00 supports the auxiliary control circuits of SINAMICS G120 variable frequency drives (e.g., 6SL3210-1PE21-8UL0), which regulate motor speed to match actual production demand rather than running at fixed speed. This alone can reduce motor energy consumption by 20–50% in pump, fan, and conveyor applications. The drive’s internal DC bus is further stabilized by the clean 24 V supply from the SITOP module, reducing nuisance trips caused by voltage sags during motor start sequences.

For servo-driven axes — common in packaging, assembly, and CNC applications — the 6EP1336-2BA00 powers the control electronics of SINAMICS S120 servo drive modules, ensuring that position feedback from encoders and resolver interfaces is processed without noise-induced errors. Paired with a SIMOTICS S-1FK7 servo motor, the system achieves precise torque control that minimizes mechanical stress and reduces energy consumption during acceleration and deceleration cycles.

Energy monitoring is handled upstream by SENTRON PAC3200 power monitoring devices, which measure real-time consumption at the panel level. The data is fed back to the SIMATIC controller via MODBUS TCP or PROFIBUS, enabling the PLC to implement demand-response logic — automatically shedding non-critical loads during peak tariff periods. The 6EP1336-2BA00’s stable output ensures that monitoring circuits remain active even during load-shedding events, preserving data continuity.

Communication between subsystems relies on SCALANCE X208 industrial Ethernet switches and CP 1243-1 SIMATIC communication processors (6GK7243-1BX30-0XE0), which maintain deterministic PROFINET cycles essential for synchronized multi-axis motion. The SITOP power supply’s low output ripple (<50 mV peak-to-peak) is critical here — communication hardware is highly sensitive to power quality, and even minor fluctuations can cause packet loss or increased retry rates that degrade overall system throughput.

Operator interaction is managed through a SIMATIC HMI KTP700 Basic panel (6AV2124-0GC01-0AX0), which displays real-time energy KPIs, alarm states, and production throughput data. The HMI is powered directly from the 24 V bus supplied by the 6EP1336-2BA00, and its low power draw (<8 W) makes it an ideal candidate for always-on monitoring without contributing significantly to panel energy budgets.

For redundant or high-availability applications, the SITOP UPS1600 (6EP4136-3AB00-0AY0) can be added downstream of the 6EP1336-2BA00 to provide buffered DC output during brief mains interruptions, protecting in-progress production cycles from costly restarts. The combination of the SITOP PSU and UPS module creates a resilient power backbone that supports 24/7 continuous operation in automotive, food processing, and semiconductor manufacturing environments.

Power Optimization in Real Production Lines

In real-world deployments, the 6EP1336-2BA00 contributes to energy optimization across multiple dimensions. First, its high conversion efficiency directly reduces the heat load inside control cabinets, lowering the duty cycle of cabinet cooling systems — a secondary energy saving that is often underestimated. In large installations with dozens of control panels, this can translate to measurable reductions in HVAC energy consumption at the facility level.

Second, the module’s wide input voltage range (85–264 VAC) allows it to operate efficiently across global grid conditions without requiring tap changes or external voltage regulators. This simplifies installation in facilities with unstable grid supplies and eliminates the energy losses associated with external voltage conditioning equipment.

Third, the 6EP1336-2BA00 supports parallel operation with the SITOP PSE200U selectivity module, enabling zone-based power distribution within a control panel. By isolating individual load circuits, the system can selectively de-energize non-critical zones during low-production periods — such as shift changes or scheduled maintenance windows — without interrupting the main control system. This granular load management approach can reduce standby power consumption by 15–25% in facilities that operate on multi-shift schedules.

From a maintenance perspective, the module’s built-in diagnostic signaling (DC OK relay output and LED status indicators) integrates directly with the SIMATIC controller’s fault management routines. Predictive maintenance algorithms running on the S7-1500 can monitor PSU output trends over time, flagging gradual voltage drift before it causes downstream equipment failures. This proactive approach reduces unplanned downtime — one of the largest hidden costs in industrial energy management — and extends the operational lifespan of connected automation components.

All units supplied by ZYPLC are sourced from verified supply channels, undergo pre-shipment functional testing at rated load, and are covered by a 12-month warranty. Stock is maintained for immediate dispatch, supporting urgent MRO (maintenance, repair, and operations) requirements without extended lead times.

Energy Optimization FAQ

Q1: How much energy can the 6EP1336-2BA00 save compared to a conventional linear power supply?
A: Switching-mode power supplies like the 6EP1336-2BA00 typically achieve >90% conversion efficiency, compared to 50–65% for linear supplies of equivalent output. In a 10 A / 24 V application running 8,000 hours per year, this efficiency difference can reduce annual PSU-stage energy consumption by 150–200 kWh per unit — a meaningful saving in facilities with large numbers of control panels.

Q2: Is the 6EP1336-2BA00 compatible with SIMATIC S7-1200 and S7-1500 systems?
A: Yes. The module’s 24 VDC output is fully compatible with the power supply requirements of SIMATIC S7-1200 and S7-1500 CPUs, ET 200SP distributed I/O, SINAMICS drive control units, and SIMATIC HMI panels. It can also power third-party 24 V automation components that comply with IEC 61131-2 power supply specifications.

Q3: What is the recommended replacement or upgrade path for aging SITOP power supplies?
A: The 6EP1336-2BA00 is a direct form-fit-function replacement for earlier SITOP modules with equivalent output ratings. For applications requiring higher output current (20 A or 40 A), Siemens offers the 6EP1437-2BA20 and 6EP1336-3BA10 as upward-compatible alternatives within the SITOP modular family. ZYPLC can advise on the appropriate replacement based on your existing panel layout and load profile.

Q4: What does the 12-month warranty cover, and what is the testing process?
A: Every 6EP1336-2BA00 unit supplied by ZYPLC is tested under rated load conditions prior to shipment, verifying output voltage accuracy, ripple levels, and protection circuit functionality. The 12-month warranty covers manufacturing defects and functional failures under normal operating conditions. Units that fail during the warranty period are replaced or repaired at no additional cost, with expedited processing to minimize production impact.

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