Product Overview

Data sheet | Electric expansion valves, type ETS 6
© Danfoss | DCS (rm) | 2019.08
AI227986437323en-000901 | 2
Design/function
The ETS 6 Electric expansion valves open and
close to regulate refrigerant flow by means of
a screw, whose rotating motion is transformed
into linear motion. This occurs by the rotation
of a magnet-needle valve assembly which
moves when electrical signals are applied to the
surrounding coil.
Within the coil structure, there are different
winding configurations, and the
polarities are changed by the electrical signals
applied. By application of the appropriate
combination of signals, in the form of pulses,
the coil forces the rotor of the valve to move in a
stepwise fashion.
Application of multiple pulses will make the valve
mechanism to move through a series of steps
in the chosen direction, in order to set the valve
with the required opening degree.
Coil
Permanent magnet motor
Needle valve
Valve body
Cross section diagram of ETS 6 series
* Refers to refrigerant flow in cooling mode
Outlet (A*)
Inlet (B*)
Technical data
Valve data
Flow characteristic Bi-flow.
Maximum working pressure 47 bar / 681 psig.
Compatible refrigerants
R22, R32, R134a, R290, R404A, R407C, R407H, R410A, R448, R449A, R452A,
R452B, R454C, R463A, R513A, R1234yf (for flammable refrigerants follow EN 378
standard)
Refrigerant oil All mineral oils and ester oils (to lubricate ETS 6 valve).
Ambient temperature
-30 – 70°C / -22 – 158 °F
Fluid Temperature
(measured at the inlet of the
valve like the image below)
-30 – 70°C / -22 – 158 °F
Durability
Tested for 60 Million total pulses supplies to the valve during partially open
valve, which is comparable to 150,000 cycles if the valve is operated between
100 to 300 pulses open.
Tested for 30,000 full stroke cycles including 20 pulse overdrive at each closing.
Ambient humidity 95 % RH or less.
Capacity control range 10 % – 100 %
Electrical data
Modulation Permanent magnet type direct operating stepper motor.
Excitation method 1-2 phase.
Electrical connection JST XHP-6, JST XHP-5 and AMP connection.
Excitation speed min. 30 pps (pulses per second) to max. 90 pps, recommended 31 pps.
Operating range
0 to 480 pulses, no holding power required (NOTE: do not apply more than
520 pulses).
Full motion transit time e.g. 16 sec @ 30 pps, 6 sec @ 80 pps
Installation position
Liquid line solenoid valve
With coil on the upper side and the valve/coil assembly within ±15˚of the
vertical axis
If using a liquid line solenoid valve, it must be installed in such a way that it
does not create liquid hammering this ETS 6 valve.
Max. coil winding temperature 115 °C / 239 ° F
Compatible Danfoss controller EKE 1A, EKE 1B, EKE 1C, EIM 336 (for OEM only).
Approvals
Complies with:
EC PED 97/23/EC a3P3, RoHS, REACH
UL (Danfoss UL file no. is MH 7648.) and CQC
RoHS
Bi-flow