User Guide

ManualsBrandsSiemens ManualsRefrigeration Valves (BC7)Modulating refrigerant valves / Stetige Kältemittelventile PS45, MVL661..

CDV

II 3G

Operating instruction

Refrigerant Valves PS45

for flammable and safety refrigerants

CDV..MVL..

• One valve type for expansion, hot-gas and suction throttle applications

• Approved according to directive 94/9/EC (ATEX 95)

• Certificate: SEV 05 ATEX 0154X

• Four valve sizes with k

values from 0.25 to 6.3 m³/h

• Selectable standard interface DC 0/2...10 V or DC 0/4...20 mA

• Short positioning time (< 1 s)

• Closed when deenergized

• Hermetically sealed towards outside

• Robust and maintenance-free

Use

II 3G EEx nAC IIC T4

Refrigerant valve CDV..MVL.. is a device of device group II, category 3G pursuant to

Directive 94/9/

EG (ATEX 95) Appendix, that can be used pursuant to Directive

99/92/EG (ATEX 137) in zone 2 as well as natural gas groups IIA, IIB, and IIC, that are

a risk of explosion in the range for temperature classes T1 to T4 due to flammable

materials.

Permissible ambient temperature is -25°C to +55°C.

CE2Q4714en

29.02.2012

Building Technologies

Summary of content (12 pages)

PAGE 1
CDV II 3G Operating instruction Refrigerant Valves PS45 CDV..MVL.. for flammable and safety refrigerants • • • • • • • • • One valve type for expansion, hot-gas and suction throttle applications Approved according to directive 94/9/EC (ATEX 95) Certificate: SEV 05 ATEX 0154X Four valve sizes with kvs values from 0.25 to 6.3 m³/h Selectable standard interface DC 0/2...10 V or DC 0/4...
PAGE 2
Type summary Type reference Base valve CDV..MVL.. CDV..MVL.. 3) DN kvs 3 [m /h] MVL661.15-0.4 15 0.40 MVL661.15-1.0 15 1.0 CDV..MVL.. MVL661.20-2.5 20 2.5 1.6 CDV..MVL.. MVL661.25-6.3 25 6.3 4.0 1) kvs reduced 3 [m /h] 1) Q0 E [kW] Q0 H [kW] Q0 D [kW] 0.25 47 9.2 1.7 0.
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1 2 3 4 5 1 G0 G Y M U ZC 2 on 3 1 2 3 4 4 5 DIL switch Configuration DIL switch Connection terminals LED for indication of operating state Minimal stroke setting potentiometer Rv Autocalibration DIL switches for mode control 4716Z15 Operator controls and indicators in the electronics housing Function ON ON / OFF Description ON Current [mA] OFF Voltage [V] ON DC 2…10 V, 4…20 mA OFF DC 0…10 V, 0…20 mA ON Current [mA] OFF Voltage [V] ON 63 % OFF 100 % positioning signal Y 1 O
PAGE 4
Forced control input ZC ZC – Function no function fully open closed G G • ZC not connected • ZC connected with G • ZC connected with G0 • Valve will follow Y-signal • Valve will fully open control path A  AB • Valve will close control path A  AB Function Transfer Connections G Signal priority Calibration • Minimal stroke setting with potentiometer Rv possible 1. Forced control input ZC 2.
PAGE 5
Connection type 1) The 4-wire connection should always be given preference! Product number 4-wire connection 3-wire connection SNA PMED IF 2 Wire cross-section [mm ] 2) 1.5 2.5 4.0 max. cable length L [m] [VA] [W] [A] CDV..MVL661..-.. 22 12 1.6…4 A 65 110 160 CDV..MVL661..-.. 22 12 1.6…4 A 20 35 50 SNA Pmed IF L = = = = nominal apparent power for selecting the transformer typical power consumption required slow fuse max. cable length; with 4-wire connections, the max.
PAGE 6
Mounting instructions The valve should be mounted and commissioned by qualified staff. The same applies to the replacement electronics and the configuration of the controller. Comply with requirements per EN 60079-14 for use / installation. Note additional installation notes depending on application and use the appropriate safety elements (e.g. pressure control, motor full protection).
PAGE 7
Connection diagrams Terminal assignment for controller with 4-wire connection (to be preferred!) Common Transformer Separate Transformer Terminal assignment for controller with 3-wire connection Common Transformer Separate Transformer U Indication of valve position (only if required). DC 0...10 V → 0...100 % volumetric flow V100 Twisted pairs. If the lines for AC 24 V power supply and the DC 0...10 V (DC 2...10 V, DC 0... 20 mA, DC 4...
PAGE 8
Exceeding rated voltage Measures must be undertaken outside field devices (refrigerant valve CDV..MVL661..) to prevent temporary faults from exceeding more than 40 % of rated voltage (transient protection). Maintenance notes The refrigerant valve is maintenance-free. Valve repair The valve can not be repaired. It has to be replaced as a complete unit. Replacement electronics Should the valve electronics prove faulty, the electronics module can easily be replaced.
PAGE 9
Technical data Functional actuator data Extra low-voltage only (SELV, PELV) Power supply AC 24 V Operating voltage Rated voltage to EN 60730 Frequency Typical power consumption Pmed Standby Apparent power SNA Required fuse DC 24 V Operating voltage Rated voltage to EN 60730 Current draw Positioning signal Y Signal inputs Impedance DC 0/2…10 V DC 0/4…20 mA Forced control input ZC Impedance close valve (ZC connected to G0) open valve (ZC connected to G) no function (ZC not wired) Position feedback signal U Vo
PAGE 10
Norms and Standards CE-conformity EMC-directive Electrical safety Protection class Degree of pollution Housing protection Upright to horizontal 2004/108/EC Industrial 3) Immunity EN 61000-6-2:[2005] Residential AC: Emission EN 61000-6-3:[2007] EN 60730-1 Class III as per EN 60730 Degree 2 as per EN 60730 Vibration Environmental compatibility Directive potentially explosive atmosphere ATEX approval certificate Pressure Equipment Directive Pressure Accessories Fluid group 1 1) 2) 3) 4) 5) 5) IP65 to
PAGE 11
Dimensions Dimensions in mm H3 H1 H2 D H4 01126 L Type reference DN MVL661.15-0.4 15 MVL661.15-1.0 15 MVL661.20-2.5 20 7/8 150 41 41 119 160 103 4.5 MVL661.25-6.3 25 1 1/8 160 40 47 126 160 103 4.6 DN D T M D [inch] L [mm] H1 [mm] H2 [mm] H3 [mm] H4 [mm] T [mm] M [kg] 5/8 140 44 36 113 160 103 4.4 5/8 140 44 36 113 160 103 4.
PAGE 12
/12  2011-2012 Siemens Switzerland Ltd Siemens Building Technologies Refrigerant Valves PS45 Subject to change CE2Q4714en 29.02.