7 SG9H 70 en
17
4.6
Valve travel calibration
Select
CAL
from the menu by using
+
or
-
keys and press
the
?
key.
4.6.1
AUTO CAL
calibration function
During calibration process a blinking text "
CAL run
" will be
show on the display. If calibration ends successfully, a text
"
CALIBRATION SUCCESSFUL
" will be shown. Calibration can
be cancelled with the
=
key, which will show a text
"
CALIBRATION CANCELLED
". If calibration fails, the reason
will be shown, eg. "
CALIBRATION START FAILED
",
"
POSITION SENSOR RANGE ERROR
", "
CALIBRATION TIMEOUT
"
or "
CALIBRATION FAILED
". After calibration the device will
return to the main menu (measurement monitoring).
If the calibration is not finished in 10 minutes, the "calibration
timeout" error is shown.
4.6.2
TUNE
Automatic Tuning
After selecting this option the number of strokes will be
asked:
NBR 5
.
The user is able to change this number between 2…20. The
default value is 5 full strokes (open and close).
During tuning process a blinking text "
TUNE run
"
will be show on the display. If tuning ends success-
fully, a text "
CALIBRATION SUCCESSFUL
" will be
shown. Tuning can be cancelled with the
=
key, which
will show a text "
CALIBRATION CANCELLED
".
If tuning fails, the reason will be shown, eg.
"
CALIBRATION START FAILED
", "
POSITION SENSOR
RANGE ERROR
", "
CALIBRATION TIMEOUT
" or
"
CALIBRATION FAILED
". After tuning the device will
return to the main menu (measurement monitoring).
4.7
Special displays
4.7.1 User interface locked
In order to prevent unauthorised access, the Local User
Interface may be locked. In this mode measurements may
be viewed but configurations and calibrations are prohib-
ited. You may lock and unlock the device via HART or by DIP
switch (see 4.8. HART write protection). When the Local
User Interface is locked the lock symbol will be activated on
the display.
4.7.2 Online-alarm active
If an online alarm has been detected the
&
symbol is acti-
vated. This symbol will disappear after the recovery from
online alarm. You may view the reason for the alarm by
viewing the latest event while pushing the
=
and
-
keys
simultaneously or by using FieldCare software where all
events may be viewed.
4.7.3 HART Communication active
When double arrow symbol is indicated, HART communica-
tion is activated to device.
4.7.4 Viewing of latest event
You may view the latest event by pressing the
=
and
-
keys simultaneously in the measurement monitoring view.
The message is scrolled on the top row of the display twice.
You may stop the scrolling by pressing the
?
key. By
pressing the
=
key, the message will disappear.
For the list of events see Chapter 6.
NOTE:
Valve travel calibration is possible only when the valve
controller is in
AUTO
mode.
Fig. 17
Calibration selection
WARNING:
Automatic calibration drives the valve against the
mechanical open and closed travel limits of the valve-
actuator assembly and a tuning procedure is per-
formed. Make sure that these procedures can be safely
executed.
NOTE:
Tuning is only needed if stroke profiles are used, i.e. stroke
times are set other than 0 s.
Fig. 18
LUI locked
Fig. 19
Online alarm message
Fig. 20
HART communication activated
scrolling text
