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Siemens
Electrical Actuators
CA1Q4895en
Building Technologies
2016-03-24
Type summary
Type reference
Operating voltage
Running time at 50 Hz
Positioning signal
SSC319
AC 230 V
150 s
3-position
SSC819
AC 24 V
SSC619
AC / DC 24 V
30 s
DC 0...10 V
When ordering, please give quantity, product name and type reference.
10 actuators SSC819
The actuators are delivered in multipacks of 10. The minimum order quantity is 10
pieces.
The actuators, valves and accessories are packed separately
Equipment combinations
Type reference
Type of valve
k
vs
[m
3
/h]
PN class
Data sheet
VVP459..
2-port valves
0.25...25
PN 16
Q4845
VXP459..
3-port valves
VMP459..
3-port valves with T-bypass
0.25...4
VXG48..
3-port valves
6.3…20
Q4467
VXI48..
3-port valves
4…16
Q4849
VVG549
2-port valves
0.7...14
PN 25
Q4380
Function / mechanical design
When the actuator is driven by a 3-position or DC 0…10 V control signal, it generates a
stroke which is transmitted to the valve stem.
Voltage at Y1:
Actuator stem extends
valve opens
Voltage at Y2:
Actuator stem retracts
valve closes
No voltage at Y1 or Y2:
Actuator maintains the current position
The valve opens / closes in proportion to the control signal at Y.
At DC 0 V, the valve is fully closed (A
AB).
When power supply is removed, the actuator maintains its current position.
When the AC / DC 24 V supply is applied for the first time, the actuators calibrate
themselves independent of the control signal. In this process, the actuator drives the
valve to the mechanical end stops and stores the associated positions permanently in
the form of electronic values. The positioning signal is only active on completion of this
calibration process. Calibration takes about 60 seconds.
If the calibrated actuator is used with some
other valve (e.g. a replacement valve), it must
be recalibrated.
1. Unscrew screws
2. Remove cover
3. Connect the 2 contacts behind the slot
for about 1 second.
The calibration can only be made
correctly if the actuator is fitted to a
valve (refer to «Equipment
combinations»).
Standard versions
Ordering
Example:
Delivery
3-position control
signal
SSC319 / SSC819
DC 0...10 V control
signal
SSC619
Self-calibration
SSC619
Recalibration
