Figure 69: Osetting Superheat, Temperature and OD
Via External signal
Offset via External
Current signal.
Offset via External
Voltage signal.
Modulating thermostat (MTR)
When the temperature is well above the MTR set point (The MTR reference is dened by temperature set point + ½
dierential) cooling capacity is at maximum and superheat is controlled to be on superheat reference. When
temperature is getting close to the MTR reference the cooling capacity gradually reduce so that the
temperature can be stable on the MTR reference and the superheat will be oating.
Figure 68: Modulating thermostat (MTR)
MTR start
Temperature
setpoint
1
/
2
erential
Temperature S3/S4
Compressor startup
Time
Time
Valve OD
Danfoss
80G308.10
Table 29: Modulating thermostat (MTR) parameters
Thermostatic Mode (2-MTR)
• Uses a temperature setpoint (parameter R101), and the dierential con-
stant(R001).
• The goal is to maintain the temperature media at the level dened by the set
point.
• If the temperature is higher than the reference + the dierential, the supper
heat control will start, and it stops when the temperature goes below the ref-
erence.
Select the used sensor S3 or S4
Only if S3 is selected in R015, Selection of the used Media temperature S3
Only if S4 is selected in R015, Selection of the used Media temperature S4
Temperature setpoint, Deg C
Desired media temperature
11= Injection MTR, (read value)
6.2.3 Osetting Superheat, Temperature and OD Via External signal
Temperature and superheat references can be displaced in positive or negative direction using a current signal
(EKE1C only), voltage signal or via Modbus.
© Danfoss | Climate Solutions | 2022.06 BC398828796060en-000101 | 47
Superheat controller, Type EKE 1A, 1B, 1C, 1D
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