Siemens 125-5033 Benutzerhandbuch

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Product Overview 
Siemens Building Technologies, Inc. 
 
9 
 
Figure 8.  Pneumatic Actuator. 
Analog Output-Pneumatic (AO-P) Module 
The Analog Output-Pneumatic (AO-P) Module is an electric-to-pneumatic interface between 
the Fume Hood Controller and the pneumatic actuator. The AO-P Module translates electrical 
signals from the Fume Hood Controller into pneumatic signals that command the actuator. 
The AO-P Module consists of two industrial grade solenoids that supply or bleed air to the 
actuator by using a pulse modulation technique. See Figure 9. Minimum air supply to the AO-
P Module is 18 psi and the maximum is 30 psi. The valves are rated for 24 Vac. 
5.00" (127.0mm)
3.70" 
(94.0mm)
SUPPL
Y
COMMON
EXHA
UST
SUPPLY
S
(SUPPL
Y)
18-30 PSI
R
(A
CTU
A
T
OR)
EXHAUST
FUM0240R1
 
Figure 9.  AO-P Module.