Product Overview
Disposal
The device must not be disposed of together with domestic waste. This applies in
particular to the the PCB.
Legislation may demand special handling of certain components, or it may be
sensible from an ecological point of view.
Current local legislation must be observed.
Warranty
Application-specific technical data must be observed.
If specified limits are not observed, Siemens Switzerland Ltd will not assume
any responsibility.
Technical data
Functional actuator data
Power supply
Extra low-voltage only (SELV, PELV)
Operating voltage
1)
AC 24 V + 15 % / -10 %
Frequency 50…60 Hz
Typical power consumption P
med
refer to «Type summary» table
Rated apparent power S
NA
refer to «Type summary» table
Required fuse I
F
1.6…2.5 A, slow
Input
Positioning signal ZM101/A DC 0…10 V or DC 0…20 V Phs (phase cut)
ZM121/A DC 4…20 mA or DC 0…20 V Phs
ZM111 DC 0…20 V Phs
Input resistance DC 0…10 V > 100 kΩ
Input resistance DC 4…20 mA < 150 Ω
Positioning time Positioning time < 1 s
Electrical connections Cable entry 2 x Pg11 (ZM101/A, ZM121/A)
Connection terminals max. 1 x 4 mm
2
wire cross-section
Min. wire cross-section 0.75 mm
2
Functional valve data Permissible operating pressure Max. 4.3 MPa (43 bar)
2)
Max. differential pressure Δp
max
AB → A
AB → B
refer to «Type summary» table
0.8 MPa (8 bar)
Leakage rate Δp = 0.1 MPa (1 bar)
AB → A
AB → B
max. 0.05 % of k
vs
-value
max. 0.5 % k
vs
Valve characteristic (stroke, k
v
) linear (to VDI / VDE 2173), optimized in low
opening range
Permissible media for organic safety refrigerants (R22, R134a,
R404A, R407C, R410A, R507 etc.).
Not suitable for ammonia (R717)
Not suitable for flammable refrigerants
Medium temperature -40...120 °C
Position when de-energized AB → A closed
Orientation any
Type of operation modulating
Stroke resolution ΔH / H
100
> 1 : 200 (H = stroke)
Pressure tightness to outside hermetically sealed (fully welded, no static or
dynamic seals)
Materials Housing components steel / CrNi steel
Seat / inner valve brass / CrNi steel
Pipe connections internally soldered, CrNi steel
Dimensions and weight Dimensions refer to «Dimensions»
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Siemens Modulating refrigerant valves with magnetic actuator‚ PS43 CE2N4721en
Building Technologies 03.05..2011