Technical Data
48
TMC 66
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Technical Data
Safety-relevant technical data
Type in accordance with IEC/
EN 61496
Type 2
Performance Level (PL) in accor-
dance with ISO 13849-1: 2008
PL d
Category in accordance with
ISO 13849-1
Cat. 2
Mean probability of a danger-
ous failure per hour (PFH
d
) as a
function of the mean number of
annual switching cycles of the
relay n
op
*
n
op
= 4,800:
1.4 x 10
-8
1/h
n
op
= 28,800:
3.1 x 10
-8
1/h
n
op
= 86,400:
7.9 x 10
-8
1/h
Mean time to dangerous failure
(MTTF
d
)
n
op
= 4,800:
250 years
n
op
= 28,800:
100 years
n
op
= 86,400:
40 years
Degree of cover DC
98%
Number of cycles until 10 % of the
components have a
failure to danger (B
10d
)
Low load 20%: 20 million switching cycles
DC 1: 400,000 switching cycles
AC 1: 400,000 switching cycles
Service life (T
M
)
20 years
*n
op
= mean number of annual actuations, see C.4.2 and C.4.3 of ISO 13849-1: 2008
Use the following formula to calculate the mean number of annual actuations:
In doing so, make the following assumptions with regard to the use of the component:
h
op
= mean operating time in hours per day
d
op
= mean operating time in days per year
t
cycle =
mean time between the start of two successive cycles of the component (e.g switching of a
valve) in seconds per cycle
Electrical data
Operating voltage U
B
24V DC +/-15%
Residual ripple
< 15%
Current consumption
approx. 200 mA
Response time
< 20 ms
Delay before start-up
approx. 2 s
Sensors
Transmitter activation
PNP (HIGH active)
n
op
d
op
h
op
3600s/h
⋅
⋅
(
)
t
Zyklus
÷
=