28
7 ND90 71 en
After selecting
A0
on the display, press the
?
key to
enter the edit state and
A0
starts to blink. The value
currently selected appears as a percentage (
%
) on the
display.
Modify the parameter value by pressing
+
or
-
keys alternately until the desired value appears on
the display.
Press the
?
key to make your selection and return
to the setting state.
5.5.9 Profibus slave address setting
ND9000P only
You can modify the Profibus slave address by press-
ing
+
and
-
keys. Range is 0-126, default value is
126.
Press the
?
key to make your selection and return
to the setting state.
5.5.10 Low cut-off, low limit, high cut-off, high
limit
ND supports signal cut-off and limiting in both ends of the
operating range. The configuration parameters are; low cut-
off, low limit, high cut-off and high limit.
If the input signal is smaller than low cut-off, the
valve will be fully closed.
If the input signal is smaller than low limit, the valve
stays in the low limit.
If the input signal is greater than high cut-off, the
valve will be fully opened.
If the input signal is greater than high limit, the valve
stays in the high limit.
The cut-off overrides the limit as follows:
If the low cut-off > low limit, the low limit is not
active.
If the low cut-off < low limit, both low cut-off and
limit are active.
If the low cut-off is set to zero, the low cut-off is not
active.
If the high cut-off < high limit, the high limit is not
active.
If the high cut-off > high limit, both high cut-off and
limit are active.
If the high cut-off is set to 100 %, the high cut-off is
not active.
Only the low cut-off is adjustable using the LUI. Low limit,
high cut-off and high limit are configurable via FieldCare
software.
5.5.11 HART version
Select if device is used as HART 6 or HART 7 device
by using the + and - keys.
To conclude press the [enter] key when the desired
value is shown on the display.
As default device is HART 6 device.
Device needs to be rebooted after change
5.5.12 Language selection,
LANG
Select between three languages
EnG
,
GEr
or
FrE
using the
+
and
-
keys.
To conclude press the
?
key when the desired
value is shown on the display.
5.6
Valve travel calibration
During the calibration the ND controller searches for opti-
mum internal control parameters for the valve position con-
trol. Also it defines open and close ends. After the
calibration sequence is finished, press the
=
key to get
back to the measurement view.
You may interrupt the calibration sequences at any time by
pressing the
=
key, then device returns to basic measure-
ment display. Calibration parameters will not be changed if
calibration is cancelled or failed. If calibration fails, LUI and
DTM event log shows error message. See Chapter 7 for
more information. The calibration will not alter the
PERF
parameter.
Select
CAL
from the menu by using
+
or
-
keys and press
the
?
key. Define the calibration type
AUTO
,
MAN
,
1PT CAL
,
LCAL 3P
or
LCAL 9P
, see Fig. 27. In case of
LCAL 3P
and
LCAL 9P
, see more information from 5.6.4.
When
CAL
menu from the LUI is opened again, the last
started travel calibration will be shown first on the list.
Table 8
Dead angle in percentage
Valve
size
Valve series
MBV
QMBV
1)
MBV
QMBV
2)
D,
P,
C
T5,
QT5
QX-
T5
T25,
QT25
QX-
T25
R,
QR
E
R-
SOFT
3)
FL
4)
ZX
mm
in
Dead angle, %
15
1/2
15
20
3/4
15
25
1
14
-
-
25.5 19.5
-
-
15
25.5
27
12.5
25/1 1/1
11
25/2 1/2
11
25/3 1/3
10
40
1 1/2
12
-
-
24.5 12.5
-
-
12
16
21
12.5
50
2
10
9
13.5 24.5 12.5
18
8
17
20.5
23
12.5
65
2 1/2
9
-
-
-
-
-
-
13
-
18
80
3
10
8
12
18
8
16.5
8.5
9
8.5
15.5
100
4
10
8
12
16.5
8.5
16
9
8
7
14.5
125
5
12
-
-
-
-
12
6.5
8
-
150
6
10
8
11.5
16
9
13.5
8
13.5
13
200
8
9
7
8.5
12
6.5
9.5
7
11.5
250
10
9
7
7.5
13.5
9.5
7
10.5
300
12
8
6
6.5
9.5
7.5
6
9.5
350
14
6
6
-
5
9.5
400
16
5
5.5
9.5
(14")
5
9.5
450
18
6
7.5
(16")
500
20
6
4.5
600
24
5.5
650
26
7
700
28
7
750
30
6
800
32
-
900
36
5.5
1) Seat supported 2) Trunnion 3) Soft seated R-valve 4) Low Cv Finetrol
NOTE:
If
AUTO CAL
,
MAN CAL
,
LCAL 3P
or
LCAL 9P
is selected,
the valve controller must be in
AUTO
mode. 1-point cali-
bration may run in both
AUTO
and
MAN
mode.
WARNING:
Automatic calibration drives the valve against the
mechanical open and closed travel limits of the valve-
actuator assembly. Make sure that these procedures
can be safely executed.