SIPART PS2 (6DR5...)
A5E03436620-AB, 01/2017
31
5.5
Purge air switching
When the enclosure is open, the purge air switch above the pneumatic terminal strip on the pneumatic block can be
accessed.
●
In the IN position, the enclosure is flushed from inside with a small volume of clean and dry instrument air.
●
In the OUT position, the purge air is directly directed towards outside.
①
Purging air selector
②
Pneumatic connections Y1, PZ and Y2
Figure 5-1
Purge air switch on the pneumatic block; view of the positioner on the pneumatic connection side when the
cover is open
The factory setting is the "IN" position.
5.6
Commissioning linear actuators
5.6.1
Preparing linear actuators for commissioning
Requirement
You have already installed the positioner using the suitable mounting kit.
Setting the transmission ratio selector
Commissioning
The setting of the transmission ratio selector is extremely important to commission the positioner.
Stroke [mm]
Position of the transmission ratio selector
5 ... 20
33°
25 ... 35
90°
40 ... 130
90°
Connecting the positioner
1.
Connect a suitable current or voltage source. The positioner is now in the "P manual mode". The current potentiometer
voltage (P) in percent is shown in the upper line of the display, e.g.: "P37.5", and "NOINI" flashes in the bottom line:
2.
Connect the actuator and the positioner to the pneumatic lines.
3.
Supply the pneumatic auxiliary power to the positioner.
Setting the actuator
1.
Check whether the mechanical unit can be moved freely in the entire travel range. Move the actuator to the respective
end position for this purpose using the
or
button.
End position
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