ABB AV2123000 Positioner User Manual
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CAM CHARACTERIZATION
100
90
80
70
LIMITED
TRAVEL
SCALE = % OF
SIGNAL RANGE
60
50
40
30
20
10
LIMITED
SIGNAL
0
0
10
20
30
40
50
60
70
SOLID LINE INDICATES FORWARD TRAVEL
(DIRECT ACTING)
80
90
100
100
90 80 70 60 50 40 30
DASHED LINE INDICATES REVERSE TRAVEL
(REVERSE ACTING)
20
10
0
SCALE = % TRAVEL
T00792A
Figure C-2. Cam B, Linear Relationship
100
90
80
70
60
SCALE = % OF
SIGNAL RANGE
50
40
LIMITED
TRAVEL
30
20
10
0
0
10
20
30
40
LIMITED
SIGNAL
50
60
70
SOLID LINE INDICATES FORWARD TRAVEL
80
90
100
100
90 80 70 60 50 40 30
DASHED LINE INDICATES REVERSE TRAVEL
20
10
0
SCALE = % TRAVEL
T00793A
Figure C-3. Cam C, Square Relationship
CAM CHARACTERIZATION
C - 2
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