BBH SMX 12-2 - 4.2.1.5 Overview of achievable PI for digital safety inputs

Installation manual
HB-37350-810-01-51F-EN SMX Installation manual.docx Page 68 of 234
Version: 50F
4.2.1.5 Overview of achievable PI for digital safety inputs
Typ des
Sensors /
Eingangs
element
Input
Parameterized /
operational tests
Achieva
ble PI
acc. to
EN ISO
13849-1
Fault exclusion
for input
element
Condition for input
element
Cross
-shorting test
With time
-out
Start test
Cyclic test during operation
Single-
channel
I01..I14
b
Operation proven input
element
O
O
d
All faults at the
input element
Short-circuit at
input/signal line
MTTF
D
= high
Connection in control
cabinet or protected
routing
I01..I04
I09..I14
e
All faults at the
input element
Short-circuit at
input/signal line
Input element does not
comply with min. PIr
Connection in control
cabinet or protected
routing
all
X
d
Getting caught
Short-circuit at
input/signal line
Mainly High level
required (THigh > 100 *
TLow). Positively
disconnecting
MTTFD = high
Connection in control
cabinet or protected
routing
X
O
O
e
All faults at the
input element
Short-circuit at
input/signal line
Input element does not
comply with min. PIr
Connection in control
cabinet or protected
routing
MTTF
D
= high
Dual-channel
parallel
all
d
Short-circuit
between
input/signal line
Connection in control
cabinet or protected
routing
MTTF
D
= medium
X
e
MTTF
D
= high
Dual-channel
parallel
all
X
e
Short-circuit
between
input/signal line
(only with common
switching elements
= 2xNO or 2xNC
Connection in control
cabinet or protected
routing
MTTF
D
= high