Interference Current - Pepperl+Fuchs KF GUT-(EX)1.D Series Manual

8.6.2 Interference current

The following table shows what the result of the current output is depending on the setting in the event
of a malfunction:
Setting
Min
Max
hold
Up/down
only useful
for RTD
The current output behaviour in case of the various alarm indications regarding a redundant
thermocoupler is described in section 8.2.4.
Subject to reasonable modifications due to technical advances.
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Temperature converter with trip relays KF**-GUT-(Ex)1.D
Current path
characteristic
0 ... 20 mA
0 mA
(cannot be distinguished
from the measurement of
the start value)
approx. 21.5 mA
last measured value before fault occurred
0 mA
for Err SB
(cannot be distinguished
from a measurement of
the start value)
approx. 21.5 mA
for Err SC
Editing devide data: Current output
Characteristics
4 ... 20 NE43,
4 ... 20 mA (b)
2.0 mA
approx. 21.5 mA
2.0 mA
for Err SB
approx. 21.5 mA
for Err SC
Characteristic
4 ... 20 mA
0 mA
(cannot be distinguished
from an underrange of the
start value)
approx. 22 mA
(cannot be distinguished
from a final value
overrange)
0 mA
for Err SB
(cannot be distinguished
from an underrange of the
start value)
approx. 22 mA
for Err SC
(cannot be distinguished
from an overrange of the
final value)
Copyright Pepperl+Fuchs, Printed in Germany
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