Link Controls CS 320 - Category and Performance Level of Safety Function

58 – Control CS 320 / Rev.D 1.01 Control CS 320 / Rev.D 1.01 – 59
58 – Control CS 320 / Rev.D 1.01
12.2 12.2 Category and performance level of the safety function per EN ISO 13849-1Category and performance level of the safety function per EN ISO 13849-1
Function Realisation
MTTF
D
Electronics
MTTF
D
Total
with output
contactor
DC
avg
Category
Performance
Level
Emergency stop Input terminal X3, X6, X7, X11
Interrupts the power supply to the
output relay and main contactor,
independent of the CPU.
Feedback to the CPU available.
1175 years 191 years 84.7% 3 d
Stop circuit Input terminal X3, X7
Interrupts the supply to the main
contactor.
Message to CPU.
1175 years 191 years - B b
End position
detection
through absolute
value encoder
Input terminal X11
For position determination and end
position detection. Testing through
plausibility check of expected
position values to received position
values.
1062 years 188 years 83.7% 2 c
End position
detection
through end
position switch
Input terminal X15
Protection through runtime limiting.
Inputs are evaluated by the CPU.
1248 years 193 years 63.1% 2 c
Light barrier
evaluation
Input terminal X4
Pulse evaluation through CPU. Faults
areidentiedthroughplausibility
evaluation in the CPU. The frequency
mustliebetween130Hzand190
Hz.Thefunctionismonitoredby
switching the supply voltage (T117,
IC111) of the light barrier each time
before travel and every two minutes
when idle. With activation in the
CLOSE direction, a stop or reversing
of the door takes place.
1000 years 186 years 81.9% 2 c
Evaluation of
a pneumatic
switching strip
Input terminal X4
Evaluation through CPU. Testing
through plausibility evaluation.
Switching signal must come shortly
before reaching the lower end
positions.
1123 years 190 years 85.6% 2 c
Evaluation of
single or double
8k2 / single OSE
SKS
Input terminal X4
Evaluation through CPU.
The function is monitored by
switching the supply voltage (IC110,
T138) each time before travel.
1123 years 190 years 85.6% 2 c
DC
AVG
Average diagnostic coverage
MTTF
D
Mean time to dangerous failure
Technical data