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Emerson V150 Bedienerhandbuch Seite 4

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Seitenansicht 3
Basis Weight Actuator
4
Dimension
20HT 30HT 40HT
mm
A
B
C
306
155
90
455
228
122
565
286
134
D
E
F
50
120
50
80
176
85
100
230
115
G
H
K
L
35
8.5
63
46
60
10.5
92
72
80
12.5
116
92
Inches
A
B
C
12.0
6.10
3.54
17.9
8.98
4.80
22.2
11.22
5.28
D
E
F
1.97
4.72
1.97
3.15
6.93
3.35
3.94
9.06
4.53
G
H
K
L
1.38
0.33
2.48
1.81
2.36
0.41
3.62
2.83
3.15
0.49
4.57
3.62
Figure 2. Actuator Dimensions
F
G
D
E
A
H
C
K
L
B
E0010 / IL
System Description
The SKF actuator, IC2000 Stepmotor Interface, and
Vee–Ball valve is a control system intended for basis
weight control. The system requires a 117, 220, or 240
Vac power supply and a control signal (provided by the
customer) that consists of a contact closure for in-
crease in valve position and a contact closure for de-
crease. The system consists of the following standard
and optional components.
The Vee–Ball Valve, a Design V150 or V200, is the
final control device that controls the amount of process
flow.
The SKF electrically operated actuator provides rotary
motion to open and close the valve. A stepping motor
in the actuator drives a ball screw. The linear motion of
the ball screw nut is transmitted to the valve shaft
through a rack and pinion arrangement and a
clamped, splined actuator–to–valve connection. Also
included in the actuator are a potentiometer (used to
provide a valve position feedback signal), limit
switches to shut off motor control signal when the trav-
el limit is reached, a handwheel for manual operation
of the valve, and a valve rotation indicator. The hand-
wheel can be operated only when no power is applied
to the actuator and Stepmotor Interface. The hand-
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