Louisville CD-1261, Руководство пользователя

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SKPx5.xxxUx Electro Ͳ hydraulic actuators Technical Instructions
Document Number CC1N7643us
December 10, 2018
Siemens AG Building Technologies Page 21
Pressure
Reducing T Ͳ
Fitting AGA78
Figure 11 AGA78 Operation.
10 20 30
10
20
30
40
50
60
70
80
90
P1
P2
D1
=
1,5
m
m;
D
2 =
2
mm
D1
= 1
,5 m
m;
D2
= 1
,7 m
m
76
43d
0
2/
0
5
03
100
110
120
130
Figure 12. AGA78 Adjustments.
Function
The air is blown out continuously into the atmosphere through the restrictor D2. The air undergoes a
drop in pressure across the restrictor D1. The relationship is shown in the diagram (Figure 12).
Example:
Given p1 = 70 mbar, D1 = 1.5 mm, D2 = 1.7 mm
Find: Pressure signal P2 for SKP75.xxxUx
P2 = 26 mbar
Reducing T Ͳ fitting AGA78 is supplied ready for mounting, complete with D1 = 1.5 mm and
D2 = 1.7 mm. An additional restrictor D2 with a diameter of 2 mm is included with the actuator.
Wiring and
switch
adjustment
(See Terminal
designations )
• The actuator is equipped with spring Ͳ loaded terminals for 14 AWG wires.
• The actuator has two line and two neutral terminals. Both can be connected to other
devices.
• Insert one wire into the opening of the terminal while pressing the lever downward with a
screwdriver. Make sure that all strands insert into the opening.
• Adjust the auxiliary switch (if provided) according to the wiring diagram on the label below
the terminals (see Figure 12). The adjustment screw and scale are located on the right side of
the terminal box, and are visible through the transparent portion of the terminal cover.
)
NOTE:
1. The auxiliary switch is adjustable between 40% and 100% of the stroke.
The factory setting is at 40%.
2. The auxiliary switch must not be used for proof of closure detection or other
safety interlock functions.
3. The Proof of Closure Switch is non Ͳ adjustable.
Service There are no serviceable parts on the SKPx5.xxxUx series actuators. If inoperative, replace the entire
actuator. Tag wires before servicing.