<7. Troubleshooting>
7-2
IM 21B03D01-01E
7.3 Troubleshooting Flow
The PK200 current-to-pneumatic converter causes
relatively few problems as long as it is used
correctly. However, inadequate preparation such
as in mounting or service conditions may result in a
problem.
If the converter does not operate normally, take
correct measures by following the flow chart below.
Some problems include a complex cause which
may not be uncovered by the following flow chart.
If a problem appears difficult to correct, contact our
service personnel.
Replace the converter using a spare.
F0702.ai
Supply air at normal supply pressure.
Provide heat protection or good
ventilation.
Large output error.
NO
YES
YES
NO
Is air
supplied at normal supply
pressure?
Is the
converter installed in
a place subject to large
temperature changes?
NO
Is control relay defective?
Replace the control relay.
YES
Supply air at normal supply pressure.
Select “A.”
NO
YES
NO
YES
Is air
supplied at normal supply
pressure?
Is A / M selector switch
set to A?
NO
Is the restrictor clogged?
Clean the restrictor.
YES
Replace the converter using a spare.
F0703.ai
NO
Is control relay defective?
Replace the control relay.
YES
The converter does not operate even when
input signal is applied.
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