12
EB 8389 EN
Operation
2.3
Differences between firm
-
ware versions
These Mounting and Operating Instructions
are valid for Types 3730-2/-3/-4/-5 and
Types 3731-3/-5 Positioners in the following
firmware versions:
Positioner
Firmware 1.5x Firmware 1.6x
Type 3730-2
•
•
Type 3730-3
•
•
Type 3730-4
•
Type 3730-5
•
•
Type 3731-3
•
•
Type 3731-5
•
Type 3730-3
−
No differences
Type 3730-5
−
The status classification "Out of specifica
-
tion" (
) is not available in firmware
versions lower than firmware version
1.6x.
−
The
data logger
(statistical information)
is no longer available in firmware ver
-
sion 1.6x.
−
The status classification in firmware 1.5x
is assigned in folder
[Settings >
Positioner > Error control >
Classification report > Extended]
, in
firmware version 1.6x and higher in
folder
[Settings > Positioner > Diagnosis
configuration > Classification]
2.4 Start-up
The positioner must be initialized to use the
full scope of the valve diagnostics. During
initialization the positioner adapts itself opti-
mally to the friction conditions and the signal
pressure required by the control valve.
The positioner can be initialized using one of
the following initialization modes: maximum
range (MAX), nominal range (NOM) and
manual adjustment (MAN).
−
Maximum range (MAX)
Initialization mode for simple start-up of
valves with two clearly defined mechani
-
cal end positions, e.g. three-way valves
−
Nominal range (NOM)
Initialization mode for all globe valves
−
Manually selected range (MAN)
Initialization mode for globe valves re-
quiring OPEN position to be entered
manually
The application type, pressure limit and the
start-up parameters required for the selected
initialization must be entered to initialize the
positioner.
Positioner start-up is described in detail in
the associated instructions (see Table 1).
During positioner initialization, the propor-
tional-action coefficient Kp and deriva
-
tive-action time Tv levels are optimally set. If
the positioner tends to overshoot impermissi-
bly due to other disturbances, the propor-
tional-action coefficient and derivative-action
time can be adapted accordingly. Increment
Note
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