Brochure

Note on
viscosity 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 υ [mm
2
/s] in HVAC plants always is lower than 10 mm
2
/s, i.e. its
influence on volume flow is negligible.
Kinematic visc
osity
≤ 10 mm
2
/s
> 10 mm
2
/s
For details please contact yo
ur 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
4455D02
6
12
y
y
10 [V]
10 [V]
20 [mA]
86420
2
4
100
80
60
40
20
0
[%]
y
4455D03
6
12
y
y
Positioning signals Positioning signals
Val
ve characteristic
Connection type
1)
The 4-w
ire connection should always be given preference!
S
NA
P
MED
S
TR
I
F
Cross-sectional area [mm
2
]
1,5 2,5 4,0
Type reference [VA] [W] [VA] [A] max. cable length L [m]
MX..461.15-0.6
MX..461.15-1.5
MX..461.15-3.0
MX..461.20-5.0
MX..461.25-8.0
MX..461.32-12
29 5 50 3,15 70 110 170
MX..461.40-20
MX..461.50-30
44 40 70 110
MXF461.65-50 46
6 75 4
30 50 80
4-w
ire connection
S
NA
= nominal apparent power for selecting the transformer
P
med
= typical power consumption
S
TR
= Minimal required transformer power
I
N
= 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
Engineering notes
Conduct electric connections in accordance with local regulations on electric
installations as well as the internal or connection diagrams.
Observe safety regulations and restrictions designed to ensure the safety of
people and property at all times!
Attention
Fit a strainer upstream of the
valve to increase reliability.
7/14
Siemens Modulating control valves with magnetic actuators, PN16 CA1N4455en
Building Technologies 2012-10-23