Data Sheet
Electric regulating valve
Type KVS 1C, 2C, KVS 3C, KVS 5C
KVS Colibri® is a series of electric suction modulating valves for AC transport and refrigeration applications.
Accurate temperature or pressure control is obtained by modulating the refrigerant flow in the evaporator with a current or voltage driver.
The balanced design provides bi-flow operation as well as solenoid shut-off function in both flow directions at MOPD 40 bar (580 psig).
AI285537379493en-000202
Electric regulating valve, Type KVS 1C, KVS 2C, KVS 3C, KVS 5C
Features
•Precise control
◦Precise pressure and temperature control
•Liniar flow chararateristic
◦Repetitive operation of the valve at all conditions
•Balanced cage design
◦Higher MOPD
◦Easily fits in various application and operating conditions
◦Bi-flow
•Direct driven valve motor technology
◦Powerful motor that guarantees precise flow control and increased energy efficiency of the system
◦Reduced complexity by reducing number of parts
•Supports variety of refrigerants, approved for oil free applications
◦Wide application scope
◦Supports an extended list of refrigerants
◦Approved for oil free application
•Fast opening/closing time of 2.5 sec.
◦Quick reaction to the operation condition
•Solenoid tight shut-off
◦Prevents migration of the refrigerant during stand-still
•Compact, lightweight and in-line design
◦Flexible and easy integration in any system
•Bi-Metal connectors
◦Fast and improved brazing process – no wet wrap needed
•Stainless construction
◦Internal and external corrosion resistant
•Fully hermetic laser welded design
◦Hermetic valve in accordance to EU F-gas Regulation EU 517/2014
◦No external leakage which saves cost on maitenance and refrigerant loss
◦Protecting the environment and climate
•Manufactured according to ISO/TS 16949
◦Second – to – none quality and reliability
© Danfoss | Climate Solutions | 2022.03 |
AI285537379493en-000202 | 2 |
Electric regulating valve, Type KVS 1C, KVS 2C, KVS 3C, KVS 5C
Applications
Figure 1: Typical application
Controller |
Temperature sensor |
KVS Colibri® |
regulating valve |
Evaporator |
© Danfoss | Climate Solutions | 2022.03 |
AI285537379493en-000202 | 3 |
Electric regulating valve, Type KVS 1C, KVS 2C, KVS 3C, KVS 5C
Product specification
Technical data
Table 1: Technical data
Features |
Description |
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R1233zd(E), R1234yf, R1234ze(E), R1270, R134a, R22, R227ea, R23, R245fa, R290, |
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R32, R404A, R407A, R407B, R407C, R407F, R407H, R410A, R412A, R413A, R417A, |
Compatible refrigerants |
R422A, R422B, R422D, R427A, R438A, R442A, R444B, R447A, R448A, R449A, R449B, |
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R450A, R452A, R452B, R454A, R454B, R454C, R455A, R463A, R500, R502, R507A, |
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R512A, R513A, R513B, R515A, R515B, R516A, R600, R600a |
Refrigerant oil |
POE, PVE, All mineral oils, ester oils and supports oil free |
Complies with PED |
Yes, Fluid group 1 and 2, Article 4 paragraph 3 |
MOPD |
40 bar / 580 psi |
Max. working pressure PS/MWP |
50 bar (g) / 725 psi (g) |
Refrigerant temperature range (measured at the inlet of the valve) |
-40 – 100 °C / -40 – 212 °F |
Ambient temperature |
-40 – 70 °C / -40 – 158 °F |
Capacity control range |
10% – 100% of total opening degree |
Initial opening |
5% = 30 full steps |
Environmental transport/storage temperature and humidity |
Max. 75 °C / 167 °F, Humidity: <100% RH |
Material of construction |
Body: Stainless Steel / Connector: Bimetal (stainless steel and copper) |
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Electrical data
Table 2: Electrical data
Features |
Description |
|
Motor enclosure |
IP67 |
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Stepper motor type |
Bi-polar - permanent magnet |
|
Step mode |
Microstepping (recommended), 2 phase full step or half step |
|
Phase current |
800 mA peak / 600 mA RMS |
|
Holding current |
No permanent holding current needed. Max. 20% permanent holding current |
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recommended For optimal performance, driver should keep 100% current on |
|
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coils 10ms after last step |
|
Phase resistance |
10 Ω ± 10% at +20 °C / 68 °F |
|
Inductance |
14 mH ± 25% |
|
Duty cycle |
20% |
|
Nominal Power consumption |
7.44 W RMS at 20 °C (total, both coils) |
|
Total number of full steps |
600 |
|
Step rate |
Current control driver: a. Step type: Microstep (1⁄4 th or higher): 240 full steps/sec. |
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recommended b. Step type: Full step or Half steps: 240 full steps/sec. recommen- |
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ded Emergency close : 240 full steps/sec. OEMs with 3rd party controller, please |
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contact Danfoss |
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NOTE! For refrigerant temperatures above 70 deg.C => only use micro step! |
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Step translation |
0.0167 mm/step |
|
Full travel time |
2.5 seconds at 240 steps/sec |
|
Opening stroke |
10 mm / 0.4 in. |
|
Reference position |
Overdriving against the full close position |
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Overdriving performance |
1% (6 full steps) Overdrive is recommended for optimum performance 628 steps |
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in closing direction recommended for initialisation Overdriving in open position |
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|
not recommended |
|
M12 connector |
According to EN 61076-2-101 |
|
Compatible driver |
Danfoss driver: EKE 1A, EKE1B and EKE 1C |
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Certain third party drivers. Contact Danfoss for details |
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© Danfoss | Climate Solutions | 2022.03 |
AI285537379493en-000202 | 4 |
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