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6 Safety categories
BU 0530 GB-3712 45
6 Safety categories
6.1 IEC 60204-1:2005
(German version EN 60204-1:2006)
The requirements of a Category 0 and Category 1 stop function can be fulfilled by the "safe pulse block".
The controlled braking for Category 1 is not fail-safe via the standard functions of the frequency inverter. The
switch-over to the stop function of Category 0 is fail-safe.
6.2 IEC 61800-5-2:2007
(German version EN 61800-5-2:2007)
The requirements for the functions "Safe shut-down torque (STO) and "Safe stop 1" (SS1) can be fulfilled with
the shut-down method "safe pulse block.
With the function SS1, there is no safe monitoring of motor speed reduction or motor speed reduction by the
frequency inverter. If a risk analysis has shown that monitoring is necessary, this must be carried out via an
external safe control unit. The solutions for the function SS1 described in the examples correspond to
characteristics as per IEC 61800-5-2:2007, Section 4.2.2.3, Paragraph c) "Triggering of motor speed reduction
and triggering of the STO function after an application-specific time delay". The motor speed reduction is
carried out via the standard functionality of the frequency inverter and is not fail-safe. The switch-over to the
STO function is fail-safe.
6.3 IEC 61508
Part 1: 2010
Parts -3, -4, -5: 1998 + Corrigendum 1999
Parts -2, -6, -7: 2000
(German version EN 61508, Part 1: 2010, Parts 2 to 7:2001)
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 SIL 3.
Shut-down method
“Safe pulse block”
SIL
3
PFH
0
DC
cannot be established (PFH=0)
SFF
100 %
T
M
20 years
SIL Safety Integrity Level
PFH Probability of hazardous failures per hour
DC Diagnostic coverage level
SFF Proportion of safe failures
T
M
Period of use
The digital inputs do not have SIL capability
- BU 0530 1
- NORD frequency inverters 2
- BU 0530 GB-3712 3 3
- 4 BU 0530 GB-3712 4
- Scope of Application 5
- 6 BU 0530 GB-3712 6
- BU 0530 GB-3712 7 7
- 8 BU 0530 GB-3712 8
- 1 General 9
- 10 BU 0530 GB-3712 10
- 1 General 11
- BU 0530 GB-3712 11 11
- 12 BU 0530 GB-3712 12
- BU 0530 GB-3712 13 13
- 14 BU 0530 GB-3712 14
- BU 0530 GB-3712 15 15
- 16 BU 0530 GB-3712 16
- 1.3 Identification system 17
- Name for ordering SK 5xxE 18
- Example: 18
- 2 Function description 19
- 20 BU 0530 GB-3712 20
- 2.1 Safe shut-down method 21
- 2.1.1 Safe pulse block 21
- 2.1.2 Digital inputs 21
- 2.2 Safety functions 22
- 2.2.1 Safe torque off, STO 22
- 2.2.2 Safe stop 1, SS1 22
- 2.3.1 STO function 23
- 24 BU 0530 GB-3712 24
- 2.3.2 SS1 Function 25
- 2.3.3 Simple restart block 26
- (See Section 6) 27
- Ruling out wiring faults 28
- 3.2 Wiring guidelines 29
- VAInumberRU 30
- 14,0*5*5,0** 30
- 3.4.2 Connection terminals 31
- 32 BU 0530 GB-3712 32
- 7.5 … 30V 34
- GND / 0V 34
- 18 … 30V 35
- 4 Parameterisation 40
- 4 Parameterisation 41
- BU 0530 GB-3712 41 41
- 42 BU 0530 GB-3712 42
- BU 0530 GB-3712 43 43
- 5.1 Output voltage 44
- 5.3 OSSD 44
- outputs, test pulse 44
- 6 Safety categories 45
- 6.1 IEC 60204-1:2005 45
- 6.2 IEC 61800-5-2:2007 45
- 6.3 IEC 61508 45
- 6.4 ISO 13849-1:2006 46
- 7 Commissioning 47
- Validation 48
- Error display 49
- Error memory 49
- 9 Technical data 50
- 9.1 Environmental data 50
- 9.2 Control terminal data 50
- 9 Technical data 51
- BU 0530 GB-3712 51 51
- 52 BU 0530 GB-3712 52
- 10 Additional information 53
- Repairs 53
- Internet information 53
- 11 Keyword index 54
- 11 Index 55
- BU 0530 GB-3712 55 55
- Mat. Nr. 607 5302 / 3712 56
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