WIKA CS6S Betriebsanleitung Seite 77

9. Faults
Fault/Problem
PV is irregular or
unstable
PV is irregular or
unstable
Entered value is
displayed for a
longer time
"Scaling lower limit
value"
WIKA operating instructions models CS6S, CS6H, CS6L
Causes
Sensor input value and temperature
(°C or °F) are not correct
Sensor correction coefficient or sensor
correction value does not match
Specifications of the sensor are not
correct
Interference signals have entered into
the sensor circuit
Interference signals have entered into
the sensor circuit
The input signal cable for DC
voltage (DC 0 ... 5 V, DC 0 ... 10 V)
or DC current (DC 0 ... 20 mA) is not
detached
The input terminals for DC voltage
(DC 0 ... 5 V, DC 0 ... 10 V) or the
DC current (DC 0 ... 20 mA) are not
securely connected
Measures
Select accurate sensor input value
and the temperature (°C or °F)
Set a suitable value
Use a sensor with suitable
specifications
Protect the sensor signals from
interference sources
Protect the sensor signals from
interference sources
Check the input signal cable
of the DC voltage (DC 0 ... 5 V,
DC 0 ... 10 V) and DC current
(DC 0 ... 20 mA)
Check whether the input signal
cable has become detached
DC voltage
■
When the input from the
connection of this controller is
DC 1 V and if a value (converted
value of the upper/lower limits
of the scaling) of up to DC 1 V
is displayed, the controller is
probably working normally, but
the input signal cable may have
become detached.
Direct current
■
When the input from the
connection of this controller
is DC 4 mA and if a value
(converted value of the upper/
lower limits of the scaling) of
up to DC 4 mA is displayed,
the controller is probably
working normally, but the input
signal cable may have become
detached.
Connect input terminals for the DC
voltage securely with the current
flow
EN
77