Data Sheet for Product

8/20
Siemens Modulating refrigerant valves with magnetic actuator, PS45 CE2N4714en
Smart Infrastructure 2021-08-02
Technical data
Functional actuator data
Power supply
Extra low-voltage only (SELV, PELV)
• AC 24 V Operating voltage AC 24 V ±20% (SELV) or
AC 24 V class 2 (US)
Frequency
45...65 Hz
Typical power consumption P
med
12 W
Standby
< 1 W (valve closed)
Rated apparent power S
NA
32 VA (for selecting the transformer)
Required fuse
1.6...4 A (slow)
External supply line protection Fuse slow max. 10 A
or
Circuit breaker max. 13 A
Characteristic B, C, D according to EN 60898
or
Power source with current limitation of max. 10 A
• DC 24 V
Operating voltage
DC 20...30 V
Current draw
0.5 A / 2 A (max.)
Signal inputs
Control signal Y
DC 0/2...10 V or DC 0/4...20 mA
Impedance DC 0/2...10 V
100 kΩ / 5nF
Impedance DC 0 / 4...20 mA
240 Ω / 5nF
Forced control ZC
Input impedance
22 kΩ
Close valve (ZC connected to G0)
< AC 1 V; < DC 0.8 V
Open valve (ZC connected to G)
> AC 6 V; > DC 5 V
No function (ZC not wired)
Positioning signal Y active
Signal outputs
Position feedback signal U Voltage
DC 0/2…10 V; load resistance ≥ 500 Ω
Current
DC 0/4…20 mA; load resistance ≤ 500 Ω
Stroke detection
Nonlinearity
Inductive
Accuracy ± 3 % full scale
Positioning time
Positioning time
< 1 s
Electrical connections
Cable entry glands
3 x Ø 17 mm (for M16)
Min. wire cross-section
0.75 mm
2
Max. cable length
See «Connection type», page 5
Product data valve
Permissible operating pressure
max. 4.5 MPa (45 bar)
1)
Max. differential pressure
p
max
2.5 MPa (25 bar)
MVL661.32-10: 1.6 MPa (16 bar)
MVL661.32-12: 200 kPa (2 bar)
Valve characteristic (stroke, k
v
)
Linear (to VDI / VDE 2173)
Leakage rate (internally across seat)
Max. 0.002% k
vs
or
Max. 1 Nl/h gas at p = 4 bar
Shut/off function, like solenoid normally closed (NC)
function
External seal
Hermetically sealed (fully welded,
no static or dynamic seals)
Permissible media
Commonly used refrigerants (R134a, R448A,
R449A, R450A, R452A, R513A etc. such as R744
(CO
2
)).
Not suitable for ammonia (R717).
Medium temperature
Refrigerant outlet (AB)
-40...120 °C; max. 140 °C for 10 min; without ASR70
Refrigerant inlet (A)
1...120°C; max. 140°C für 10min; without ASR70
Refrigerant inlet (A)
-40...0°C with ASR70
6)