Werbung
Verfügbare Sprachen
Verfügbare Sprachen
7.1
Preparations for linear actuators
1.
Mount the positioner with the appropriate kit (see Chapter 3.2, page 6).
.
Note
The position of the transmission ratio selector in the positioner is especially important (item 7,
Leaflet "Operation – a concise overview")
Stroke
5 to 20 mm
25 to 35 mm
40 to 130 mm
2.
Push the driver pin (4, Figure 1, 2) on the lever (6, Figure 1, 2) to the scale position corresponding to the
nominal stroke or the next highest scale position and screw the driver pin tight with the nut (18, Figure 1,
2).
3.
Connect the actuator and positioner with appropriate pneumatic tubing and supply instrument quality air
to the positioner (see Figure 13).
.
Note
Before supplying the positioner with electrical energy, screw down the cover and close the safety
catch.
4.
Connect a suitable current or voltage source (see Figure 5 and Figure 6 or Figure 8 for PROFIBUS PA).
5.
The positioner is now in "P manual" mode. On the upper line of the display, the current potentiometer
voltage (P) is displayed as a percentage, e.g. "P12.3", and on the lower line "NOINIT" is blinking:
6.
Check that the mechanism is now able to move freely over the entire range by moving the actuator into
each end position with the
Tip: You can move the actuator quickly by pressing the other direction key while you hold the first direc-
tion key down.
7.
The display of the potentiometer voltage in % (upper line of the display) must always remain in the range
P5.0 to P95.0. If this is not the case, adjust the friction clutch (8, Figure 3) on the exterior of the housing
with a small hex wrench as follows: Move the actuator into its end position by pressing the
Adjust the friction clutch until the upper display line displays a value between P90.0 and P95.0.
8.
Move through the entire range by adjusting the actuator with the
end position. The potentiometer voltage should now remain in the range P5.0 to P95.0. If this is still not
the case, adjust the friction clutch as follows: Move the actuator into its end position again by pressing
the
key. This time, adjust the friction clutch until the upper line of the display shows a value between
P5.0 and P10.0.
9.
Now move the actuator into the horizontal position of the lever. The display should show a value bet-
ween P48.0 and P52.0. If this is not the case, adjust the friction clutch until "P50.0" is shown when the
lever is horizontal. The more precisely you achieve this value, the more accurately the positioner can
determine the displacement.
C79000-M7474-C157-01
Lever
Position of the transmission ratio selector
Short
33° (i.e. below)
Short
90° (i.e. above)
Long
90° (i.e. above)
and
keys.
and
keys and move it into the
key.
39
Werbung
