Vacon OPTAF, User Manual

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vacon • 14 STO AND SS1 SAFETY FUNCTIONS
Local contacts: https://www.danfoss.com/en/contact-us/contacts-list/
3. STO AND SS1 SAFETY FUNCTIONS
The safety functions of the OPTAF option board, such as the technical principle and data, wiring ex-
amples and commissioning, will be described in this chapter.
NOTE! Designing of safety-related systems requires special knowledge and
skills. Only qualified persons are permitted to install and set up the OPTAF
board.
The use of STO, SS1 or other safety functions does not itself ensure safety.
An overall risk evaluation is required in order to make sure that the com-
missioned system is safe. Safety devices like the OPTAF board must be cor-
rectly incorporated into the entire system. The entire system must be
designed in compliance with all relevant standards within the field of indus-
try.
Standards such as EN 12100 Part 1, Part 2, & ISO 14121-1 provide methods
for designing safe machinery and for carrying out a risk assessment.
CAUTION! The information in this manual provides guidance on the use of
the safety functions that OPTAF option board provides together with
VACON
®
NXP control board. This information is in compliance with
accepted practice and regulations at the time of writing. However, the end
product/system designer is responsible for ensuring that the system is safe
and in compliance with relevant regulations.
CAUTION! The OPTAF board and its safety functions do not electrically iso-
late the drive output from the mains supply. If electrical work is to be car-
ried out on the drive, the motor or the motor cabling, the drive has to be
completely isolated from the mains supply e.g. using an external supply
disconnecting switch. See for e.g. EN 60204-1 section 5.3.
CAUTION! If STO or SS1 safety function is required in DriveSynch installa-
tion, please contact your nearest distributor for more information.
CAUTION! In LineSynch application the use of OPTAF board will not fulfill
STO or SS1 safety functions while the drive is in by-pass mode.