Danfoss KVS 1C, KVS 2C, KVS 3C, KVS 5C Data sheet

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 ow in the evaporator with a current or voltage driver.

The balanced design provides bi-ow operation as well as solenoid shut-o function in both ow 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 ow chararateristic

◦ Repetitive operation of the valve at all conditions

• Balanced cage design

◦ Higher MOPD ◦ Easily ts in various application and operating conditions ◦ Bi-ow

• Direct driven valve motor technology

◦ Powerful motor that guarantees precise ow control and increased energy eciency 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-o

◦ 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

Temperature sensor

Evaporator

Controller

KVS Colibri® regulating valve

Electric regulating valve, Type KVS 1C, KVS 2C, KVS 3C, KVS 5C

Applications

Figure 1: Typical application

Features

Description

Compatible refrigerants

R1233zd(E), R1234yf, R1234ze(E), R1270, R134a, R22, R227ea, R23, R245fa, R290, R32, R404A, R407A, R407B, R407C, R407F, R407H, R410A, R412A, R413A, R417A, R422A, R422B, R422D, R427A, R438A, R442A, R444B, R447A, R448A, R449A, R449B, R450A, R452A, R452B, R454A, R454B, R454C, R455A, R463A, R500, R502, R507A, 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)

Features

Description

Motor enclosure

IP67

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 recommended For optimal performance, driver should keep 100% current on 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. recommended b. Step type: Full step or Half steps: 240 full steps/sec. recommended Emergency close : 240 full steps/sec. OEMs with 3rd party controller, please contact Danfoss

NOTE! For refrigerant temperatures above 70 deg.C => only use micro step!

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

Overdriving performance

1% (6 full steps) Overdrive is recommended for optimum performance 628 steps in closing direction recommended for initialisation Overdriving in open position not recommended

M12 connector

According to EN 61076-2-101

Compatible driver

Danfoss driver: EKE 1A, EKE1B and EKE 1C

Certain third party drivers. Contact Danfoss for details

Electric regulating valve, Type KVS 1C, KVS 2C, KVS 3C, KVS 5C

Product specication

Technical data

Table 1: Technical data

Electrical data

Table 2: Electrical data

+ 9 hidden pages