Data Sheet for Product

7/16
Siem ens Modulating control valves with magnetic actuators, PN 16 CA1N4455en
Building Technologies 2018-02-05
When sizing valves for media other than water, note that the medium properties
∂ specific heat
∂ density
∂ kinematic viscosity
differ from water. All variables depend on temperature. The design temperature is the
lowest medium temperature in the valve.
Viscosity may change considerably on temperature changes depending on the
medium. Plant functionality may be impaired if the medium temperature does not
guarantee viscosity values compatible with troublefree valve functioning.
Kinematic viscosity τ [mm
2
/s] in HVAC plants always is lower than 10 mm
2
/s, i.e. its
influence on volume flow is negligible.
For details please contact your local Siemens branch office.
Equal percentage Linear
Volumetric flow
Volumetric flow
10 [V]
10 [V]
20 [mA]
86420
2
4
100
80
60
40
20
0
[%]
y
4455 D02
6
12
y
y
10 [V]
10 [V]
20 [mA]
86420
2
4
100
80
60
40
20
0
[%]
y
4 45 5D03
6
12
y
y
Positioning signals Positioning signals
The 4-wire connection should always be given preference!
S
NA
P
MED
S
TR
P
TR
I
F
Cross-sectional area [mm
2
]
1.5
2.5
4.0
Type reference
[VA]
[W]
[VA
]
[W]
[A]
max. cable length L
[m]
MX..461.15-0.6
29 5 ″50 ″30 3.15 70 110 170
MX..461.15-1.5
MX..461.15-3.0
MX..461.20-5.0
MX..461.25-8.0
MX..461.32-12
MX..461.40-20
44
6 ″75 ″50 4
40 70 110
MX..461.50-30
MXF461.65-50 46 30 50 80
S
NA
= Nominal apparent power
P
med
= Typical power consumption in the application (Valve characteristic: equal percentage)
S
TR
= Minimal apparent transformer power
P
TR
= Minimum DC supply power
I
F
= Minimal required slow fuse
L = Max. cable length; with 4-wire connections, the max. permissible length of the separate
1.5 mm
2
copper positioning signal cable is 200 m
1)
All information at AC 24 V or DC 24V
Note for media other
than water
Note on viscosity
Kinematic viscosity
≤10 mm
2
/s
>10 mm
2
/s
Valve characteristic
Connection type
1)
4-wire connection