Siemens 6EP1935-5PG01 SITOP UPS501S expansion module

Siemens 6EP1935-5PG01 is a SITOP UPS501S expansion module that supplies 5 kW-s capacitor storage to UPS500S.

System function

Rebuilt from individual evidence

Evidence and limits

6EP1935-5PG01 is documented as a SITOP UPS501S expansion module for UPS500S with 5 kW-s of capacitor storage.

Its system position is an expansion stage in the UPS500S energy-storage path, connected through the documented plug-in system.

Siemens specifies IP20 protection for the expansion module.

Unknown: the installed UPS500S model, load profile, runtime, enclosure, service status, and installation compatibility.

Exact reference: 6EP1935-5PG01
Category: PLC / CPU
Evidence checked: 2026-09-12

System role

This section explains what the product does and where it acts in the surrounding system.

Function: Supplies an additional 5 kW-s capacitor energy-storage stage to a SITOP UPS500S system.
System position: Sits downstream of the UPS500S output in the power path as an expansion stage for the DC UPS system.
Upstream / inputs: The SITOP UPS500S provides the documented plug-in connection for this expansion module.
Downstream / outputs: The added capacitor storage contributes energy to the UPS500S buffer path.
Limitations: Unknown: the installed UPS500S model, load profile, runtime, enclosure, service status, and installation compatibility.

Evidence ledger

Facts, inferences, and unknowns are kept separate.

Facts

Siemens identifies 6EP1935-5PG01 as a SITOP UPS501S expansion module for UPS500S.
Confidence: high
- support.industry.siemens.com — retrieved 2026-09-12; high confidence
Siemens specifies capacitor energy storage with an energy content of 5 kW-s.
Confidence: high
- support.industry.siemens.com — retrieved 2026-09-12; high confidence
Siemens specifies that the expansion module connects to SITOP UPS500S through a plug-in system.
Confidence: high
- support.industry.siemens.com — retrieved 2026-09-12; high confidence
Siemens specifies IP20 protection for the expansion module.
Confidence: high
- support.industry.siemens.com — retrieved 2026-09-12; high confidence

Inferences

The module sits in the UPS500S energy-storage path as an expansion stage for the DC UPS system.
Confidence: high
Rationale: The exact Siemens identity, capacitor storage value, and plug-in connection establish the module as an energy-storage expansion stage.
- support.industry.siemens.com — retrieved 2026-09-12; high confidence

Unknowns

Unknown: the installed UPS500S model, load profile, runtime, enclosure, service status, and installation compatibility.
Confidence: low
Missing evidence: No installation-specific UPS500S configuration, load, runtime, enclosure, service, or compatibility record was captured.

System position diagram

A SITOP UPS500S connects by plug-in system to the 6EP1935-5PG01 SITOP UPS501S expansion module, which supplies 5 kW-s capacitor storage to the UPS energy path. — The Siemens data sheet places the expansion module in the UPS500S capacitor-storage path.

View Mermaid source

flowchart LR
  ups["SITOP UPS500S"] -->|plug-in connection| expansion["6EP1935-5PG01 SITOP UPS501S expansion"]
  expansion -->|5 kW-s capacitor storage| buffer["UPS500S energy-storage path"]

View diagram labels

Nodes: SITOP UPS500S; 6EP1935-5PG01 SITOP UPS501S expansion; UPS500S energy-storage path
Edges: Plug-in connection; 5 kW-s capacitor storage

Next action

The captured Siemens documentation supports a concrete capacitor-storage expansion role for this exact article.

Confirm the UPS500S model, enclosure, load profile, and required runtime before installation.

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