Introduction to the manual
Contents of this chapter
This chapter describes the manual in short and gives some general information for the
reader. This chapter also contains a quick reference guide for implementing a safety system.
Applicability
This manual is applicable to ACS880-07/07LC/17/17LC/37/37LC drives which have the
option +Q965: Safely-limited speed (SLS) with encoder, with FSO-21 and FSE-31.
Required versions when using the FSO-21 module with option +Q965:
• ACS880 primary control program: 2.2 or later
• FSO-21 safety functions module: revision D or later
• FSE-31 pulse encoder interface module: revision D or later
• Drive composer pro: 1.8 or later.
The FSO-21 module safety functionality described in this manual is valid for revision H. For
earlier FSO module revisions, not all functionality related to the SLS function is supported.
This manual shows the default design of the safety circuit ordered with option code +Q965.
The actual design can be different from the default design because of customer-defined
modifications. Always refer to the documentation delivered with the drive.
Target audience
This manual is intended for people who install, commission, use and service the safety
function. Read the manual before working on the unit. You are expected to know the
fundamentals of electricity, wiring, electrical components, electrical schematic symbols, and
functional safety.
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Introduction to the manual 11
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