41
Fieldbus Valve Coupler FD0-VC-Ex4.FF
Error detection and problem solutions
Subject to reasonable modifications due to technical advances.
Copyright Fuchs, Printed in Germany
Fuchs Group • Tel.: G49 621 776-0 • USA +1 330 4253555 • Sin65 67799091 • Internet http://www.pepperl-fuchs.com
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XD_ERROR
Mechanical error
Combined error signal of
the errors displayed in
"Valve Error".
See "Valve Error".
Valve Lead Fault
Combined error signal of
the errors displayed in
"Valve Lead Fault Moni-
toring".
See "Valve Lead Fault Moni-
toring".
Sensor Lead Fault
Combined error signal of
the errors displayed in
"Sensor Lead Fault Mon-
itoring".
See "Sensor Lead Fault
Monitoring".
Valve warning
Breakaway time ... too long
Transit time ... too long
(... = C->O or O->C)
The measured time was
longer than the refer-
ence value plus the
admissible allowance.
• Check auxiliary power.
• Check reference times and
allowances.
• Check PFCs for proper
functioning.
• Check friction of valve.
Breakaway time ... too short
Transit time ... too short
(... = C->O or O->C)
The measured time was
shorter than the refer-
ence value minus the
admissible allowance.
• Check auxiliary power.
• Check reference times and
allowances.
• Check PFCs for proper
functioning.
• Check friction of valve.
Valve error
Valve blocked
The valve is signalled
blocked, if a time t >
5*(breakaway time +
transit time) elapsed
since the issue of the
new reference value.
• Check reference times.
• Check PFCs for proper
functioning.
• Check auxiliary power.
• Test valve drive.
Valve left final position
The valve has left the
reached final position
without modification of
the reference value for
the valve position.
• Check parameterisation of
"Sensor Usage" (section
6.5.4).
• Check PFCs for proper
functioning.
• Check auxiliary power.
• Test valve drive.
Position detection failure
The signal combination
of the PFCs is not
assigned to a valve posi-
tion.
• Check parameterisation of
"Sensor Usage" (section
6.5.4).
• Check PFCs for proper
functioning.
The PFCs have sig-
nalled an unexpected
valve position; open -
intermediate - closed
and/or vice versa was
expected.
• Check parameterisation of
"Sensor Usage" (section
6.5.4).
• Check PFCs for proper
functioning.
• Check auxiliary power.
• Test valve drive.
Problem
Elimination of error
Parameter
Message
Cause
Elimination