Siemens VVG44.40-25U Instrucciones técnicas - Página 6
Navegue en línea o descargue pdf Instrucciones técnicas para Unidad de control Siemens VVG44.40-25U. Siemens VVG44.40-25U 7 páginas. Electronic two-way valves normally closed
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VE VVG Electronic Two-way Valves
Wiring,
Continued
Start-Up
Troubleshooting
Service
Page 6
·
All units that connect to terminals Y and U, together with the SQS65U, must
connect to the same G0.
·
When wiring the position output to AI terminations, connect terminal U to SIG and
terminal G0 to COM.
·
The factory-fitted link across terminals R and M can be removed only if a unit
connects between these terminals.
Remove the actuator cover and verify the selector plug is set for the desired flow
characteristic. See Figure 4.
Position
A-C
C-B
Equal Percentage
A
Figure 4. Selector Plug Setting for Flow Characteristic.
·
Check wiring for appropriate connections (Figure 3).
·
Check selector plug for proper flow characteristic.
·
Check valve operation. Thread plastic valve cap (Figure 1) onto top of valve. Turn it
to adjust valve position.
If either valve or actuator is inoperative, replace that unit.
WARNING:
To avoid personal injury, do not attempt to repair the valve.
Flow Characteristics
Equal Percentage (Factory Setting)
O
C
B
Figure 5. VVG Valve Construction.
Technical Instructions
Document Number 155-112P25
Rev. 3 August, 2002
Linear
Linear
O
A
C
B
·
V = Volumetric flow 1 to
100%
Y
= 0 to 10 Vdc control
U
signal
Y
= 0 to 1000 ohm
R
resistance signal
Stem Packing
Siemens Industry, Inc.