NORD Drivesystems BU0230 - Manual (Page 61)

6 Safety categories
BU 0230 GB-2712 61
6.4 ISO 13849-1:2006
(German version EN ISO 13849-1:2008)
For the safety-relevant stop functions STO and SS1 (designation as per IEC 61800-5-2:2007), frequency
inverters with the safe shut-down methods "safe pulse block" and "switch-off of the 24 V supply" fulfil the
requirements for Performance Level e. This ensures that safety category 4 can be achieved.
Shut-down
method “Safe pulse block” “Safe pulse block” "Switch-off of the 24V supply"
Size Size 1 to 3 Size 4 Size 1 to 3 (SK 205E and SK 215E)
PL e e e
DC cannot be established
(PFH=0) "high" (>99%) cannot be established (PFH=0)
MTTF
d
"high" (>100 years) "high" (>100 years) "high" (>100 years)
T
M
20 years 20 years 5 years
Category 4 4 4
PL Performance Level
DC Diagnostic coverage level
MTTF
d
Mean time before hazardous failure
T
M
Duration of use
The digital inputs which are used for the implementation of safety-relevant stop functions are primarily intended
as auxiliary inputs and can fulfil the requirements of Safety Category 1 and Performance Level c.
Input DIN 1 and DIN 4 DIN 2 and DIN 3
PL c c
DC No DC No DC
PFH 786.69 FIT for SK 2x0E Size 1 to 3
811.98 FIT for SK 2x0E Size 4
811.82 FIT for SK 2x5E Size 1 to 3 789.25 FIT for SK 2x0E Size 1 to 3
814.55 FIT for SK 2x0E Size 4
814.39 FIT for SK 2x5E Size 1 to 3
MTTF
d
"high" (>100 years) "high" (>100 years)
T
M
20 years 20 years
Category 1 1
NOTE
The values given only refer to the stated inputs or shut-down methods
The components which are additionally required for the implementation of a safety
function, such as a protective switching device, an emergency stop button etc. must also
be taken into account for the evaluation of the safety function. The resulting safety-relevant
data can be significantly influenced by these components.