User Guide

Technical data
Functional actuator data
Power supply
Extra low-voltage only (SELV, PELV)
AC 24 V
Operating voltage AC 24 V ± 20 %
Rated voltage to EN 60730 AC 24 V
Frequency 45...65 Hz
Typical power consumption P
med
12 W
Standby < 2 W (valve closed)
Apparent power S
NA
22 VA (for selecting the transformer)
Required fuse 1.6…4 A (slow)
DC 24 V
Operating voltage
Rated voltage to EN 60730
DC 20…30 V
Current draw 0.5 A / 2 A (max.)
Signal inputs
Positioning signal Y DC 0/2…10 V or DC 0/4…20 mA
Impedance DC 0/2…10 V 100 kΩ // 5nF
DC 0/4…20 mA 240 Ω // 5nF
Forced control input ZC
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 resoistance ≤ 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
Functional valve data Permissible operating pressure 4.5 MPa (45 bar)
1)
Differential pressure Δp
max
2.5 MPa (25 bar)
Valve characteristics (Hub, k
v
) linear to VDI / VDE 2173
Leakage rate (internally across seat) max. 0.002 % k
vs
respectively
max. 1 Nl/h Gas at Δp = 400 kPa (4 bar)
Shut/off function, like solenoid normally closed
(NC) function
External seal hermetically sealed (fully welded,
no static or dynamic seals)
Permissible media For common safety refrigerants (R22, R134a,
R404A, R407C, R410A, R507 usw.) sowie
R744 (CO
2
).
Not suitable for ammonia (R717)
Medium temperature -40...120 °C; max. 140 °C for 10 min
Stroke resolution ΔH / H
100
1 : 1000 (H = Stroke)
Hysteresis Typically 3 %
Mode of operation modulating
Position when deenergized Control path A  AB closed
Orientation upright to horizontal
2)
Dimensions and weight refer to "Dimensions", page 11
Materials Valve body Steel / CrNi steel
Seat, piston CrNi steel / brass
Sealing disk PTFE
Pipe connections Sleeves internally soldered, CrNi steel
9/12
Building Technologies Refrigerant Valves PS45 CE2Q4714en
HVAC Products 29.02.2012