Safety Data - WEG CFW900 Serie Manual De Seguridad

Safety

1.3 SAFETY DATA

The safety data for the CFW900 frequency inverter equipped with the STO90 safety functions
board are presented in Table 1.1 on page
Safety functions
Safety category
PFH
MTTF
d
DC
avg
Response/reaction time
Requirements for OSSD test pulses
Requirements for safety input signals
Maximum discrepancy time between
safety inputs
Requirements for safety power supply
NOTE!
The control accessories of CFW900 provide a +24 Vdc power supply, which can
be used to feed STO90.
For example, connector XC1 of CFW900-IOS (standard I/O accessory) provides
a source of +24 Vdc conveniently located next to connector XC2 for the safety
signals.
NOTE!
General information and technical data about the CFW900 frequency inverter
can be found in the user's manual, available for download on WEG's website:
www.weg.net.
10 | CFW900
10.
Table 1.1: Safety data
Safe torque off (STO), as per IEC 61800-5-2
Stop category 0, as per IEC 60204-1
Safe stop 1 time controlled (SS1-t), as per IEC 61800-5-2
Stop category 1, as per IEC 60204-1
SIL 3, as per IEC 61508 / IEC 62061 / IEC 61800-5-2
PL e / category 4, as per ISO 13849-1
< 4.22.10
> 795 years
< 100 ms
Pulse duration: < 1 ms
Interval between pulses on the same channel: > 8 ms
Interval between pulses on different channels: > 4 ms
ON: 15 Vdc ... 30 Vdc
OFF: < 2 V
+ 24 Vdc ± 15 %,
PELV type according to IEC 60204-1
or SELV type according to IEC 62368-1
1/h
-9
HIGH
1 s