Hardware Manual

12 Introduction to the manual
Contents of the manual
The manual consists of these chapters:
• Safety instructions gives the safety instructions which you
must obey when you install an extension module.
• Hardware description gives a short description of the extension
module.
• Mechanical installation contains a delivery checklist and
instructions on installing the extension module.
• Electrical installation contains instructions on adjusting
hardware filtering for DC input signals and wiring the extension
module.
• Start-up contains instructions on starting up the extension
module.
• Diagnostics shows how to trace faults with the status LED on
the extension module.
• Technical data contains the technical data of the extension
module.
Terms and abbreviations
Later in this manual, term drive substitutes for string
drive/converter/inverter.
Term/abbreviation Explanation
ELV Extra low voltage
EMC Electromagnetic compatibility
PELV Protective ELV
SELV Safety ELV