schmersal PSC1 Series Installation Manual page 45

Installation manual
4.2.1.3.2 Digital inputs I/O (IQIx)
Digital inputs
IQIx
Note:
The achievable PL for a combination of hardware inputs and functional inputs is dependent on the
operative/organisational tests selected and the independence of the two channels in the system
layout. An application-related analysis is required to determine the PL.
PSC1-C-10 Installation manual V2.7
Version: 57E
Achievable
Performance Level
PL e
PL d
PL e
PL d
PL e
Remark
Without pulse, single-channel static signal
-> Signal input
Without pulse, dual-channel static signal
At least one demand/day due to application
-
Fault detection only on demand
-
Without pulse, dual-channel static signal
Less than one demand/day due to application
-
Single-channel with pulses
Predominantly high level required (T
-
* T )
Low
- At least one demand/day due to application
Fault detection only on demand
-
Single-channel with pulses
Less than one demand/day
-
Dual-channel with pulse 1 and pulse 2
> 100
High
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