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Type summary
Accessories
Ordering
Example:
Delivery
Rev. no.
Equipment combinations
Technical design / Mechanical design
Accessories
ASC2.1/18
auxiliary switch
2/6
Siemens Building Technologies
HVAC Products
Prod. no.
Operating voltage
SFP21/18
AC 230 V
SFP71/18
AC 24 V
Prod. no.
Description
ASC2.1/18
Auxiliary switch
open/closed
Product number
Stock number
SFP71/18
SFP71/18
ASC2.1/18
ASC2.1/18
Actuators, valves and accessories are supplied separately. The actuator is supplied
with the AL50 ring.
See overview
Type code
Valve type
VVP47..
2-port valves
VXP47..
3-port valves
VMP47..
3-port valves with T-bypass
The valve is opened electrically by the actuator and closed by spring force.
It incorporates a synchronous motor, a gear mechanism and a return spring.
The electric motor is overload-resistant and anti-locking, so that continuous operation is
possible. The maximum stroke is limited mechanically. The closing motion, by contrast,
includes an overrun for the gear mechanism. This protects the gear mechanism from
mechanical shock and increases service life.
The valve is connected by an 1.8 m cable, which is an integral part of the actuator.
The optional auxiliary switch can be fitted to the actuator
with two screws.
It switches at a stroke of approx. 50 %.
•
Valve actuator de-energized:
→ Auxiliary switch open
•
Voltage applied to valve actuator:
→ Auxiliary switch closed (50 ... 100 % stroke)
•
Manual adjuster locked into position
(approx. 90 % stroke):
→ Auxiliary switch closed
See "Technical data" for further information on the auxiliary switch, page 5.
Elctromotoric Actuators
Positioning time
Control signal
10 s
Switching point
Switching capacity
At approx. 50% stroke
AC 250 V / 3(2) A
Designation
Electromotoric Actuators
Auxiliary Switch
k
vs
3
[m
/h]
0.25...4.0
0.25...4.0
0.25...2.5
Connecting cable
2-position
1.8 m
Connecting cable
1.8 m
Quantity
2
1
PN class
Data sheet
PN16
4847
CA1N4865en
20.04.2011
01468
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