ETS Colibri® is an electric stepper motor valve.
The valve has been designed for precise liquid
injection into evaporators for air conditioning
and refrigeration applications.
The valve in-line design includes balanced cage
and slider assembly operated by the direct driven
motor technology. This ensures solenoid tight
shut-off in both flow directions, thus providing
smooth operation of the system.
The valve incorporates a powerful bi-polar motor
which precisely controls flow regulation.
ETS Colibri® valves are compatible with electronic
control solutions from Danfoss and other
manufacturers.
Applications:
Air Conditioning
- Chillers, heat pumps
- Roof top and ducted split systems
- VRF and other split systems
- Close control cooling
Refrigeration
- Cold Rooms, Food retail and Transport
Features / Benefits
Precise control of liquid injection
• Optimum utilization of the evaporator
• Increased energy efficiency and COP
• Improved overall system performance
Linear Flow characteristic
• Repetitive operation of the valve at all
conditions
Balanced cage design
• Higher MOPD and MWP
• Easily fits in various application and operating
conditions
Direct driven valve motor technology
• Powerful motor that guarantees precise flow
control and increased energy efficiency of the
system
Supports variety of refrigerants, approved for
oil free applications
• Wide application scope
Fast opening/closing time of 2.5 seconds
• Quick reaction to the operating condition
• Minimizes the risk of liquid refrigerant flowing
into the compressor at shut down and low
pressure cut out at start up
Solenoid tight shut-off
• Prevents migration of the refrigerant during
stand-still
• Reduced complexity by reducing number of
components in the system
Sight glass / moisture indicator
• Fast troubleshooting during system
diagnostics
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
maintenance and refrigerant loss
Refrigerant oilPOE, PVE, All mineral oils, ester oils and supports oil free
Complies with PEDYes, Fluid group 1 and 2, article 4 paragraph 3 for all ETS Colibri
MOPD40 bar / 580 psi
Max. working pressure PS/MWP50 bar(g) / 725 psi(g)
Refrigerant temperature range
(measured at the inlet of the valve)
-40 – 70 °C / -40 – 158 °F
Ambient temperature -40 – 70 °C / -40 – 158 °F
Capacity control range10% - 100% of total opening degree
Initial opening
Environmental transport/storage
temperature and humidity
5% = 30 full steps
Max. +75 °C / +167 °F, Humidity: <100% RH
Material of constructionBody: Stainless Steel / Connector: Bimetal (stainless steel and copper)
Sightglass / moisture indicatorType N moisture indicator
Motor enclosureIP67
Stepper motor typeBi-polar - permanent magnet
Step modeMicrostepping (recommended), 2 phase full step or half step
Phase current
800 mA peak / 600 mA RMS. For more details on 3rd party controllers and
lower phase current see section: Driving Colibri valve.
No permanent holding current needed. Max. 20% permanent holding current
Holding current
allowed with refrigerant flow through valve
For optimal performance, driver should keep 100% current on coils 10ms
after last step
Phase resistance10 Ω ±10% at +20 °C / +68 °F
Inductance14 mH ±25%
Duty cycle
100% possible, requiring refrigerant flow through valve
Less than 50% over 120 sec period recommended
Nominal Power consumption7.44 W RMS at 20 °C (total, both coils)
Total number of full steps600
Step rateCurrent 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
Step translation0.0167 mm / step
Full travel time2.5 at 240 steps / sec
Opening stroke10 mm / 0.4 in.
Reference positionOverdriving against the full close position
1% (6 full steps) Overdrive is recommended for optimum performance
Overdriving performance
628 steps in closing direction recommended for initialisation
Overdriving in open position not recommended
) The above estimated capacities, are based on the following conditions:
Evaporating temperature te : 5 °C / 40 °F
Liquid temperature tl : 28 °C / 82 °F
Condensing temperature tc : 32 °C / 90 °F
Full stroke opening in normal flow direction
Capacity is ± 10% in full open state in reverse flow direction
Identification
(laser engraved data)
Coolselector®2
is a Danfoss calculation and selection software, designed to make selection processes for all
refrigeration projects easier and less time consuming.
For fast and precise selection of valve, use Danfoss’ CoolSelector2® software.
You can download it from http://coolselector.danfoss.com
Made in Denmark : Country of origin
Colibri® Electric Expansion valve : Valve name
ETS XXXC : Valve type
N0317A (Manufacturing no.) : N = Nordborg, Denmark
03 = week
17 = 2017
A = Monday
10 Ω, 800 mA peak : Motor resistense, current
PS 50 bar / MWP 725 psig : Max. working pressure
-40/+70 °C / -40/+158 °F : Refrigerant temperature
034GXXXX : Code number
: Approvals