Inhaltsverzeichnis
Werbung
Verfügbare Sprachen
Verfügbare Sprachen
19. Safety parameters
Calculation of characteristic values for the relay contacts under the following assumptions:
Load per contact
T
[Year]
M
n
[Max. cycles per year]
op
Load per contact
T
[Year]
M
n
[Max. cycles per year]
op
Safety parameters according to EN ISO 13849-1, IEC 62061 und IEC 61508
ATTENTION! According to CNB/M/11.050, a request for the safety function is recommended at the following
intervals:
• Once a month for applications up to PL e with Cat. 3 respectively Cat. 4 or SIL 3 with HFT = 1
• Once a year for applications up to PL d with Cat. 3 or SIL 2 with HFT = 1
Application
Single channel E-Stop
(Fig. 10)
Dual channel E-Stop
without cross-circuit moni-
toring (Fig. 9)
Dual channel E-Stop with
cross-circuit monitoring
(Fig. 8, 11, 12)
Safety parameters for use in furnaces in continous mode accorting to EN 50156-1 und EN 746-2
Application
Single channel E-Stop (Fig. 10)
Dual channel E-Stop without cross-
circuit monitoring (Fig. 9)
Dual channel E-Stop with cross-circuit
monitoring (Fig. 8, 11, 12)
H. ZANDER GmbH & Co. KG • Am Gut Wolf 15 • 52070 Aachen • Deutschland • Tel +49 241 9105010
Fax +49 241 91050138 • info@zander-aachen.de • www.zander-aachen.de
36
Safety Time Control Device SCB
DC-13; DC 24 V
-
-
-
AC-15; AC 250 V
≤ 0.5 A
20
≤ 65,000
Output
Contact
PL
Semiconductor
c
Relay
c
Semiconductor
d
Relay
d
Semiconductor
e
Relay
e
Output
Contact
Semiconductor
Relay
Semiconductor
Relay
Semiconductor
Relay
≤ 1 A
20
≤ 100,000
≤ 1 A
20
≤ 20,000
EN ISO 13849-1
Category
PFH
[1/h]
d
1
1.14E-06
1
1.14E-06
3
1.03E-07
3
1.03E-07
4
7.04E-09
4
2.47E-08
IEC 62061 / IEC 61508
SIL
PFD
avg
1
1.22E-04
1
1.65E-04
2
2.26E-05
2
2.35E-05
3
2.23E-05
3
2.32E-05
≤ 2 A
20
≤ 10,000
≤ 2 A
20
≤ 5,000
IEC 62061 / IEC 61508
SIL
PFD
AVG
1
1.22E-04
1
7.78E-04
2
2.26E-05
2
3.65E-05
3
2.23E05
3
3.62E-05
PFH [1/h]
T
[Jahr] PTI [Jahr]
M
1.39E-09
20
1.89E-09
20
2.58E-10
20
2.68E-10
20
2.55E-10
20
2.65E-10
20
PFH [1/h]
1.39E-09
8.88E-09
2.58E-10
4.21E-10
2.55E-10
4.18E-10
20
20
20
20
20
20
Werbung
Kapitel
Inhaltsverzeichnis
