Pepperl+Fuchs KFD2-UT2 Series Sil Safety Manual page 26

SAFETY MANUAL SIL KFD2-UT2-(EX)*, HID2082
Proof Test
Test Variation for Voltage Output/Current Sink Applications
Voltage Output
Instead of an current meter, a voltmeter has to be connected to the outputs. The
input values shall be chosen that they represent 1 V, 2.5 V and 5 V. The proof test
is passed if the output values are within 2 % of the output span. This means:
0.9 V ... 1.1 V
■
2.4 V ... 2.6 V
■
4.9 V ... 5.1 V
■
Current Sink Output Mode
The pass/fail criteria given for the current source output mode are also applicable
for the current sink output mode. Additionally to the above described test set up, a
voltage source has to be connected to the output (simulating the original
application).
Proof Test Coverage
The Proof Test Coverage
With λ
Tip
Normally the easiest way to test H-System modules is by using a stand-alone
HiDTB08-UNI-SC-SC Termination Board. The tester then has no need to
disconnect wires in the existing application, so subsequent miswiring of the
module is prevented.
26
device
= 66 FIT (device), the proof test can reveal only 60 FIT.
du
is assumed to be min. 90 %.