SIPART PS2 (6DR5...)
A5E03436620-06, 04/2015
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4.3 Pneumatic connection
Pneumatic auxiliary power
Owing to safety reasons, the pneumatic auxiliary power supply must be fed after installation only if the positioner is
switched to the "P-manual mode" when an electrical signal is available, refer to the as-delivered condition.
Note
Specifications regarding air quality
Observe the specifications regarding the air quality, see section "Technical specifications >
Pneumatic data (Page 39)".
● If required, connect the pressure gauge block for supply air and actuating pressure.
● Connection via female thread G¼ or ¼" NPT:
– Y1: actuating pressure 1 for single and double-acting actuators
– Y2: actuating pressure 2 for double-acting actuators
– Exhaust air outlet with a sound absorber. Remove the sound absorber if required.
● For double-acting actuators, connect actuating pressure Y1 or Y2 depending on the desired safety setting.
● Safety position in case of electrical auxiliary power supply failure:
– Positioner with single-acting pneumatic system: Y1 vented
– Positioner with double-acting pneumatic system: Y1 ventilated (maximum actuating pressure), Y2 vented
– Positioner with Fail in Place pneumatic system: Hold Y1 and Y2 (current actuating pressure)
Note
Leakage
Besides continuous air consumption, a leakage can cause the positioner to try to compensate the position deviation. This
will result in premature we
ar in the entire control device.
• After installing the pneumatic connections, check the tightness of the entire control valve.
4.3.1 Pneumatic connection for 6DR5..0/1/2/3
Structure
The pneumatic connections are provided on the right side of the positioner.
Actuating pressure Y1 for single and double-acting actuators
Actuating pressure Y2 for double-acting actuators
Exhaust air outlet with a sound absorber
Figure 4-11 Pneumatic connection on the standard controller
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