Brand：siemens
Model number：A5E00349225/03
Colour：new
Warranty: 12 months
Lead Time：3-day working day
Country of origin: USA Price: Please contact us
Product weight：0.62kg
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
Description:
For the operation of Siemens two-port and three-port valves, types VVF... and VXF...
with a 20 mm or 40 mm stroke.
· Field of application in accordance with IEC 721-3-3 Class 3K5
· Ambient temperatures: -15 ... +55 °C
· Temperature of medium in the connected valve: -25 ... +220 °C
>220 ... 350 °C: use special extension on valve
< 0 °C: type ASZ6.5 stem heater required
Functions
· Electro-hydraulic actuators; no maintenance required
· Pump, pressure cylinder and piston to open valve
· Return spring and bypass valve to close valve
· Manual adjuster and position indication
· SK...62... with spring-return function to DIN 32730
· Standard electronics:
– Choice of control signal (DC 0 ... 10 V / 4 ... 20 mA / 0 ... 1000 W)
– Choice of flow characteristic (equal-percentage / linear)
– Position feedback
– Stroke calibration
– LED status indication
– Override control via terminal Z
· SK...62UA enhanced functions:
– Stroke limit control
– Sequence control with adjustable starting position and operating range
– Choice of direction of operation (direct acting / reverse acting)
· Mounting space for auxiliary switch
· Stem heater can be fitted if required
· Mechanical stroke inverter can be installed if required (SKB... only)
· SK...62U and SK...62UA actuators are UL-approved
The Z-modes shown assume the factory-setting «direct-acting».
To determine the stroke positions 0 and 100% in the valve, calibration is required when
the valve/actuator are commissioned for the first time. For this purpose, the actuator
must be mechanically connected to a Siemens valve (see «Compatibility») and must
have a supply voltage of AC 24 V. The calibration procedure can be repeated as often
as necessary.
Before starting calibration, ensure that the manual adjuster is set to «Automatic»
in order to register the actual values.
There is a slot on the printed circuit boards of the actuators. To initiate the
calibration procedure, the contacts inside this slot must be short-circuited
(e.g. with a screwdriver).
Automatic calibration proceeds as follows:
· Actuator runs to the «0 stroke» position (1), valve closes, green LED flashes.
· Actuator then runs to the «100 stroke» position
(2), valve opens, green LED flashes.
· Measured values are stored.
The calibration procedure is finish, and the
green LED now glows steadily (normal operation).
· The actuator now moves to the position defined
by control signal Y or Z (3).
· Throughout this procedure, output U is inactive, i.e. the values only represent actual
positions when the green LED stops flashing and remains on continuously.
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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