Siemens SSC31 Manual - Page 2

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Siemens SSC31 Manual
Type summary
Standard versions
Accessories
Ordering
Example:
Delivery
Equipment combinations
Function / mechanical design
3-position control
signal
SSC31 / SSC81
DC 0...10 V control
signal
SSC61...
Electrical fail-safe
function
SSC61.5
2/8
Siemens
Smart Infrastructure
Type reference
Operating
voltage
SSC31
AC 230 V
SSC81
AC 24 V
SSC61
AC / DC 24 V
SSC61.5
Type reference
Description
ASK30
Mounting kit for use with former Landis & Gyr valves VVG45..., VXG45... and
X3i..
When ordering, please give quantity, product name and type reference.
2 actuators SSC81
The actuators, valves and accessories are packed separately.
Items are supplied individually packed.
Type
Type of valve
reference
VVP45..
2-port valves
VXP45..
3-port valves
VMP45..
3-port valves with T-bypass
1)
VVG45..
2-port valves
1)
VXG45..
3-port valves
X3i..
1)
3-port valves
1)
With ASK30 mounting kit
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:
· Voltage at Y2:
· No voltage at Y1 or Y2:
· 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 first connected to power, or
after a power failure, the capacitor
which stores energy for the fail-safe
function will be charged. This process
takes up to 180 seconds.
While the capacitor is being charged,
the actuator cannot respond to any Y
control signals.
On completion of the charging process and self-calibration (see below), the "Open" and
"Close" travel are proportional to the DC 0...10 V control signal.
In the event of a power failure of more than 5 seconds, the actuator will return
mechanically to its 0 % stroke position within 30 seconds, closing the valve
(A ® AB).
Electromotoric actuators
Running time at
Positioning
50 Hz
signal
150 s
3-position
30 s
DC 0...10 V
k
vs
3
[m
/h]
0.25...25
0.25...4
0.63...25
0.7...14
Actuator stem extends
Actuator stem retracts
Actuator maintains the current position
Stroke [%]
100
0
max 180 s
Charging
Remarks
With fail-safe function (30 s)
PN class
Data Sheet
N4845
PN 16
Retrofitting to
former Landis
& Gyr valves
valve opens
valve closes
max
Normal
60 s
30 s
actuator
operation
Calibration
Discharge
CA1N4895en
2019-10-02
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