metso automation neles NP Series User Manual

NP727 / NE727
C2
C1
R
C2
C1
D
C2
C1
R
NP727 / NE727
C2
C1
D
C2
C1
R
NP727 / NE727
C2
C2
C1
C1
D
R
NP727 / NE727
0-100
A
0-100
B
0-100
B
0-100
A
0-100
B
C2
C2
C1
D
C1
R
DOUBLE-ACTING
1. Increasing input signal to open valve.
Cam segments:
B/0-100, A/0-50, A/50-100
2. Increasing input signal to close valve.
Cam segments:
A/0-100, B/0-50, B/50-100
NOTE:
Reverse piping for ST actuators.
SINGLE-ACTING
(SPRING TO CLOSE)
3. Increasing input signal to open valve.
Spring to close valve.
Cam segments:
B/0-100, A/0-50, A/50-100
4. Increasing input signal to close valve.
Spring to open valve.
Cam segments:
B/0-100, A/0-50, A/50-100
WARNING:
Valve closes exceptionally counterclockwise
Unsuitable for Q, R, T5, F and L series valve
NOTE:
Reverse piping for ST actuators. Spring and piston in
the opposite position from shown.
SINGLE-ACTING
(SPRING TO OPEN)
5. Increasing input signal to close valve.
Spring to open valve.
Cam segments:
A/0-100, B/0-50, B/50-100
NOTE:
Reverse piping for ST actuators. Spring and piston in the
opposite position from shown.
Fig. 7. Positioner actions
NOTE: In positioner NP727 the changeover piece can be used in position R only.
7

metso automation neles NP Series Specifications

General

Brand	metso automation
Model	neles NP Series
Category	Valve Positioners
Language	English