Danfoss EKF Series - Analog Input Selection; Analog Input Sharing; Digital Output Signal; Stepper Motor Output

© Danfoss | Climate Solutions | 2021.07
6 | AN375548103097en-000202
Analog input selection
Congure Analog signal type by selecting DIP switch as shown in below table (green denotes ON).
Analog Input DIP Switch
1 2 3 4 5 6 7 8
0 - 10 V (Default)
0 - 5 V
4 - 20 mA
0 - 20 mA
Stepper driver 1
DIP Switch
1 2 3 4 5 6 7 8
Analog Input AI1
Analog input AI2
Analog input sharing
Congure analog input to be shared if needed as below (green denotes ON).
Digital output signal
One digital output is present in EKF and only alarm activates the output.
Output type Similar to NPN, open collector
Load type Resistive only
Maximum allowed current 10 mA
Maximum Voltage 28 V (allow 24 V DC + 15%)
Stepper Motor Output
• The stepper motor is connected to the “Stepper Valve” terminals (see connection overview) with a standard M12
connection cable or JST XHP-5 connector.
• The default valve setting in EKF 1A/2A is: No Valve.
• The correct valve must be dened as per section DIP Switch – Valve
Stepper driver 2
DIP Switch
1 2 3 4 5 6 7 8
Analog Input AI1
Analog input AI2
Valve Cable Connection
Danfoss recommends to use ETS 5M and ETS 6 valves to be connected to JST XHP-5 pin connectors instead of 4 pole terminal
block, but it is possible to connect to terminal block, follow color codes of wires of coil as shown in table below.
Stepper valve ETS/KVS/CCM/ CCMT/CTR/ CCMT L ETS 5M ETS 6
A1 White Brown Orange
A2 Black Black Yellow
B1 Red Orange Red
B2 Green Yellow Black
While using JST 5pin, its plug and play for ETS 6 and ETS 5M valves.
Guideline for long M12 cables for Danfoss stepper motor valves
• Long cables will lead to degradation of performance.
• Cable length for stepper motor connection must be less than 30 m.
• Danfoss recommends to use 4-20 mA signal for long distances and use shorter cable between driver and valve.