16
7 ND92F 70 en
5.5.6 Valve rotation direction,
ROT
The application-specific parameter
ROT
defines the rela-
tionship between position sensor rotation and valve
action.
❑
Once
ROT
is displayed press the
?
key to enter
the edit state and
ROT
starts to blink.
❑
Now you may select between two values by
pressing the
+
or
-
key. The value
cC
indicates
clockwise rotation for closing the valve and
ccC
means counterclockwise to close.
❑
After the desired value is displayed, press the
key
?
to conclude the operation.
5.5.7 Valve dead angle,
A0
The
α
0
setting is made for Metso segment and ball valves.
This setting takes into account the "dead angle"
α
0
of the
ball valves. The entire signal range is then used for effec-
tive valve opening 90° -
α
0
. Use 0 % as the "dead angle"
for the valves not mentioned in Table 5.
❑
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 per-
centage (
%
) 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.
5.5.8 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.
5.5.9 Low cut-off, low limit, high cut-off,
high limit
ND9200F supports signal cut-off and limiting in both
ends of the operating range. The configuration parame-
ters are; low cut-off, low limit, high cut-off and high limit.
❑
If the input signal is smaller than low cut-off
(TRANSDUCER_BLOCK.FINAL_VALUE_CUTOFF_LO),
the valve will be fully closed.
❑
If the input signal is smaller than low limit
(TRANSDUCER_BLOCK.FINAL_VALUE_RANGE.LO),
the valve stays in the low limit.
❑
If the input signal is greater than high cut-off
(TRANSDUCER_BLOCK.FINAL_VALUE_CUTOFF_HI),
the valve will be fully opened.
❑
If the input signal is greater than high limit
(TRANSDUCER_BLOCK.FINAL_VALUE_RANGE.HIGH),
the valve stays in the high limit.
The cut-off overrides the limit as follows:
NOTE:
Perform valve calibration and tuning always when con-
troller fail action parameter has been changed.
NOTE:
Perform valve calibration and tuning always when
ROT
has been changed.
Taulukko 5 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
14.5
11
25/2 1/2
8
11
25/3 1/3
8
10
25/4
8
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
6
650
26
7
700
28
7
6
750
30
6
800
32
-
900
36
5.5
1) Seat supported 2) Trunnion 3) Soft seated R-valve 4) Low Cv Finetrol
Fig. 14
Principle of setting
Fig. 15
Dead angle
100
80
60
40
20
0
0
20
40
60
80
100
α
0
Position
Input signal
low cut-off safety range 2
±
0.5 %
Basic setting
α
0
setting
Summary of Contents for ND9200F
Page 40: ...40 7 ND92F 70 en 14 EC DECLARATION OF CONFORMITY ...
Page 42: ...42 7 ND92F 70 en ...
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