Overview
Manuals
Product Identification
Encoder Feedback
PROFIsafe Integration
Features:
- The documented type designation is FSO-21, and this value must match the supplied unit.
- The documented product type is safety functions module, and this value must match the supplied unit.
- The documented system family is ABB drive safety systems, and this value must match the supplied unit.
ABB FSO-21 is documented for the applicable Inverter Drives system configuration. Its recorded specification includes type designation FSO-21, product type safety functions module, system family ABB drive safety systems. Correct selection depends on the complete article identity, installed equipment, mechanical or electrical interfaces and the documented configuration rather than appearance alone. Using the exact model helps maintenance teams avoid incompatible revisions, connector arrangements and application variants.
Before installing FSO-21, record the original nameplate, installed position, connected assemblies and every relevant configuration detail. Compare the supplied unit with the existing hardware and applicable ABB service documentation, isolate all affected energy sources and preserve required settings or calibration data. After installation, inspect each affected interface and complete controlled functional checks before returning the equipment to service.
The FSO-21 ABB safety functions module is listed as Active / Available from OEM. Current revision, availability and supplied scope are confirmed in the written quotation.
ABB FSO-21 documentation and reference links.
Important Notice: Every linked document must identify the listed model or its documented family. Confirm the complete order code, hardware revision and installed-system requirements before replacement.
Read FSO-21 and FSO-21 together; preserve every suffix and the installed hardware revision.
A key difference between the FSO-21 and the FSO-12 is that the FSO-21 supports safety functions based on encoder feedback. When the safety system utilizes a pulse encoder, ABB requires that the encoder be connected to an FSE-31 pulse encoder interface module, which then operates in conjunction with the drive and the FSO-21.
When integrated with a safety PLC, the FSO-21 enables the creation of a more comprehensive safety control architecture.
