GE Masoneilan SVI II ESD Installation And Maintenance Manual page 141

Sequence Byte Bit
# #
0 7 MARGINAL_
POWER
8
1 0 CALIBRATION_-
FAILED
9
1 1 FIND_
STOPS_
FAILED
10
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Table 12 SVI II ESD Fault Matrix (Continued)
FAULT Name Criticality
of Alarm
2
3
3
Auto- Can be Non-
mati- cleared/ Mas-
cally Persists kable/
cleared across Annunci-
resets ated
NA/No No/No
No Yes/No No/No
Yes, If the Yes/No No/No
find
stops
process
com-
pletes
success-
fully
Masoneilan SVI II ESD Installation and Maintenance Manual
TEXT For Probable Cause
DD & English
ValVue
ESD2
English
Marginal 1- The input cur-
Power rent is less than
3.85mA.
Calibra- 1- Calibration of
tion the input sensors
Failed was outside the
acceptable range
when attempting
to calibrate.
Find 1- When calibrat-
Stops ing stops (Zero /
Failed Span) the travel
sensor moved
outside the
acceptable limits
2- A procedure
timeout occurred
due to an
extremely large
volume of actua-
tor to displace.
3- Valve position
could not stabi-
lize when
de-energizing or
when energizing
the actuator.
Recommended
Action
1- Increase loop
current to 4mA
only if calibration
and diagnostics
are to be per-
formed.
1- Using precision
measuring equip-
ment, perform
calibration
according to
boundary limits of
input sensors.
1- Using ValVue
®
ESD or HART
Host, verify that
travel sensor
counts is 0 +/-
1000 with the
valve closed. For a
90° valve, mea-
sured sensor
count is done at
50% travel.
2- Using ValVue
®
ESD or HART
Host, perform a
Manual Stop cali-
bration.
3- Verify that air
supply is ade-
quate. Verify that
accessories
(boosters,
quick-exhausts,
etc.) are not creat-
ing instability.
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