Siemens A5E36717791 Replacement for SINAMICS S120 G150

Product Overview

Siemens A5E36717791 Replacement for SINAMICS S120 G150: Seamless Transition & Legacy System Upgrade

The Siemens A5E36717791 is a Power Supply Module (PSM) designed for the SINAMICS S120 and G150 drive platform — one of the most widely deployed servo and vector drive architectures in industrial automation. As legacy S120 booksize and chassis-format installations age, procurement teams and maintenance engineers increasingly face the challenge of sourcing direct replacements for discontinued or end-of-life power supply modules without triggering a full drive system overhaul.

This unit serves as a direct replacement or upgrade solution for earlier SINAMICS S120 Active Line Modules (ALM) and Basic Line Modules (BLM) used in multi-axis servo systems, coordinated drive trains, and G150 cabinet-integrated variable frequency drive (VFD) applications. The A5E36717791 maintains backward compatibility with the existing DC bus architecture, meaning the downstream Motor Modules (MM), such as the 6SL3120 and 6SL3130 series, continue to operate without firmware or wiring changes in most retrofit scenarios.

For plants running SINAMICS S120 systems built around the CU320-2 PN or CU320-2 DP Control Units, the A5E36717791 integrates directly into the existing DRIVE-CLiQ topology. The DRIVE-CLiQ daisy-chain from the Control Unit to the Line Module and onward to each Motor Module remains intact, eliminating the need to re-commission the axis grouping from scratch. Engineers familiar with STARTER or Startdrive commissioning software will find the replacement process straightforward: the new module is recognized automatically upon power-up, and parameter sets stored in the CU320-2 are applied without manual re-entry.

In G150 cabinet drive applications — particularly those used in pump, fan, compressor, and conveyor systems — the A5E36717791 slots into the existing cabinet frame with no mechanical modification required. The standard 400 V AC three-phase input connection, PE terminal, and DC bus output busbars align with the original installation footprint. Cooling airflow direction and mounting orientation are preserved, which is critical in confined MCC (Motor Control Center) or switchgear room environments where physical space is constrained.

When migrating from an older S120 system that used a non-regenerative Basic Line Module, upgrading to the A5E36717791 Active Line Module variant also introduces line-side power factor correction and regenerative braking capability — allowing braking energy to be fed back to the supply grid rather than dissipated through braking resistors. This reduces heat load in the control cabinet and can eliminate the need for external braking chopper units (6SL3100 series) in applications with frequent deceleration cycles.

Communication protocol compatibility is fully maintained. Whether the upstream controller is a SIMATIC S7-300, S7-400, or S7-1500 PLC communicating via PROFIBUS DP or PROFINET IO, the drive system’s network address and telegram configuration remain unchanged after the module swap. For systems using the TM31 Terminal Module or TM41 for analog and digital I/O expansion, no rewiring of the terminal block is required. The existing 24 V DC control supply from a SITOP PSU8200 or equivalent power supply unit continues to serve the electronics bus without modification.

Facilities that have standardized on the SIMATIC HMI TP700, TP900, or KTP1200 for local operator interface will find that the drive parameter visualization and fault diagnostics screens remain fully functional after the module replacement. No HMI project update is required unless the plant engineer chooses to add new diagnostic screens for the upgraded module’s extended fault code set.

From a spare parts and inventory management perspective, the A5E36717791 is stocked and available for immediate dispatch. Each unit undergoes pre-shipment functional testing covering input rectification, DC bus charge circuit, DRIVE-CLiQ port communication, and thermal management system verification. Units are shipped in anti-static packaging with full documentation including the factory test report and CE declaration of conformity.

Procurement teams evaluating this replacement should note that the A5E36717791 is compatible with the S120 Chassis format rack and does not require a new Control Unit, Motor Module, or Line filter (6SL3000 series) unless the existing components are also being upgraded. This significantly reduces the total cost of the retrofit compared to a full drive system replacement and minimizes production downtime to the duration of the physical swap and recommissioning — typically achievable within a single maintenance window.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful S120 or G150 power supply module replacement rarely involves a single component in isolation. During the retrofit process, maintenance teams commonly address adjacent components that have reached end-of-life or require recertification. The CU320-2 PN Control Unit, which manages axis coordination and PROFINET communication for the entire drive group, is frequently evaluated alongside the power supply module — particularly in systems where the firmware version needs to be aligned with the new module’s hardware revision. Similarly, the 6SL3120-series Single Motor Modules and 6SL3130-series Double Motor Modules connected downstream on the DC bus should be inspected for capacitor aging and IGBT health before the system is returned to production.

In applications where the existing line filter (6SL3000 series) was sized for the original module’s input current rating, the filter should be re-evaluated to confirm it remains within specification for the replacement unit. The SITOP PSU8200 24 V DC power supply feeding the electronics bus is another component that maintenance planners often replace proactively during a scheduled drive outage, as its service life is comparable to that of the power supply module itself.

For systems that use a TM31 Terminal Module for analog speed references or digital enable signals from the plant DCS, the terminal wiring and parameter assignments carry over without modification. In G150 cabinet configurations, the integrated bypass contactor assembly and the main circuit breaker (3VA or 3WL series) should be tested for contact wear as part of the commissioning checklist. Plants that use a SIMATIC ET 200SP or ET 200MP distributed I/O rack for remote diagnostics will find that the existing hardware configuration in TIA Portal requires no changes after the module swap, as the drive appears on the PROFINET network with the same device name and IP address.

Where the retrofit scope extends to the operator interface, the existing SIMATIC HMI panel connected via PROFINET or MPI continues to display drive status, fault history, and parameter values without any project modification. For sites that are simultaneously upgrading their control architecture from S7-300 to S7-1500, the A5E36717791 is fully compatible with the new controller’s PROFINET IRT communication profile, making it a future-proof choice for phased modernization programs.

Retrofit Guidance FAQ

Q: Can I replace the existing power supply module without changing the Motor Modules downstream?
A: Yes. The A5E36717791 maintains the same DC bus voltage and DRIVE-CLiQ interface as the original module. Downstream Motor Modules (6SL3120, 6SL3130 series) continue to operate without modification. Only the power supply module needs to be swapped.

Q: Do I need to re-enter drive parameters after the replacement?
A: No. Parameter sets stored in the CU320-2 Control Unit are retained in non-volatile memory. Upon power-up, the Control Unit automatically identifies the new module via DRIVE-CLiQ and applies the stored configuration. A recommissioning run (p0010 = 0, p0970 factory reset is NOT required) is sufficient to verify operation.

Q: Is the wiring to the AC input terminals and DC bus busbars identical?
A: Yes. The L1/L2/L3 input terminals, PE connection, and DC bus busbar positions are physically identical to the original module. No rewiring of the power circuit is required.

Q: What communication protocols are supported?
A: The module communicates via DRIVE-CLiQ to the CU320-2 Control Unit. The Control Unit then interfaces with the plant PLC via PROFIBUS DP or PROFINET IO — both protocols are fully supported without any configuration change after the module replacement.

Q: Will the replacement fit in the existing cabinet without mechanical modification?
A: Yes. The A5E36717791 uses the same chassis format and mounting dimensions as the original module. Cooling airflow direction is preserved. No cabinet modification is required.

Q: What if my system uses a PROFIBUS DP network instead of PROFINET?
A: PROFIBUS DP communication is handled by the CU320-2 DP Control Unit, which is unaffected by the power supply module replacement. The drive’s PROFIBUS address and GSD file configuration remain unchanged.

Q: How long does the replacement and recommissioning typically take?
A: For experienced drive engineers, the physical swap takes 2–4 hours. Recommissioning and test run verification typically adds another 2–4 hours, making the total downtime achievable within a single 8-hour maintenance shift.

Warranty Assurance

Every A5E36717791 unit supplied by TOPNLMS is covered by a 12-Month Warranty from the date of shipment. Prior to dispatch, each unit undergoes a structured pre-shipment inspection covering: input rectification circuit verification, DC bus charge and pre-charge circuit functional test, DRIVE-CLiQ port communication check, internal fan operation and thermal sensor response, and visual inspection for mechanical damage, connector integrity, and labeling accuracy.

Units that do not pass all inspection criteria are quarantined and not shipped. The factory test report is included with each shipment. In the event of a warranty claim, TOPNLMS provides a replacement unit dispatch within 5 business days of fault confirmation, with return shipping of the defective unit arranged at no additional cost to the buyer. Our after-sales response team is reachable via email and phone for technical support during the installation and commissioning process.

For procurement teams requiring documentation for vendor qualification, we can provide the CE Declaration of Conformity, packing list, and commercial invoice with HS code declaration upon request. Bulk orders and long-term supply agreements are available for MRO (Maintenance, Repair & Operations) programs requiring scheduled delivery of spare modules.

Stock is held in our Xiamen warehouse and is available for immediate dispatch. Standard international shipping transit times are 3–7 business days to most destinations via DHL Express or FedEx International Priority. Air freight and sea freight options are available for large-quantity orders.