General - Vacon 100 Safety Manual

vacon • 8
2. G
ENERAL
NOTE! Designing of safety-related systems requires special knowledge and skills. Only qualified
persons are permitted to install and set up the OPTBJ board.
This document covers the OPTBJ option board 70CVB01380 functionality together with Vacon 100
Control board 70CVB01582.
The OPTBJ option board together with Vacon 100 control board provides the following safety func-
tions with Vacon 100 products.
The following safety-related abbreviations and expressions have been used in this manual:
SIL
PL
PFH
Category
MTTF
DC
avg
PFD
T
M
Safe Torque Off (STO)
The hardware based 'Safe Torque Off' safety function prevents the drive from generating torque on
the motor shaft. The STO safety function has been designed for use in accordance with the following
standards:
• EN 61800-5-2 Safe Torque Off (STO) SIL3
• EN ISO 13849-1 PL"e" Category 3
• EN 62061: SILCL3
• IEC 61508: SIL3
• The function also corresponds to an uncontrolled stop in accordance with the stop category 0, EN
60204-1.
• The STO safety function has been certified by TÜV Rheinland *
NOTE! The STO function is not the same as a prevention of unexpected start-up function. For fulfilling those
requirements, additional external components are required according to appropriate standards and applica-
tion requirements. Required external components may be for example:
• Appropriate lockable switch
• A safety relay providing a reset function
NOTE! The safety functions of OPTBJ do not comply with Emergency Switching Off according to EN 60204-1.
NOTE! Do not use the STO function as a standard stop function of the drive.
NOTE! In an IGBT fault situation, the shaft of a permanent magnet motor can rotate up to 180 degrees around
the pole of the motor.
NOTE! If the pollution degree 2 cannot be guaranteed, use the IP54 protection class.
CAUTION! The OPTBJ board and its safety functions do not electrically isolate the
drive output from the mains supply. If electrical work is to be carried out on the
drive, the motor or the motor cabling, the drive has to be completely isolated
from the mains supply, for example, using an external supply disconnecting
13006.emf
switch. See, for example, EN60204-1 Chapter 6.3.
2
Safety Integrity Level
Performance Level
Probability of a dangerous random hardware Failure per Hour
Designated architecture for a safety function (from EN ISO 13849-1:2006)
Mean time to dangerous failure
d
Average diagnostic coverage
Average probability of (random hardware) failure on demand
avg
Mission time
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General