Danfoss EKF Series - Application; Connection Overview

© Danfoss | Climate Solutions | 2021.07
2 | AN375548103097en-000202
Application
Valve Driver
EKF 1A
EKF 2A
ETS Colibri
Analog signal AI1
Digital out
Digital out
AI 1
AI 2
ETS Colibri
ETS Colibri
• Supports both Bipolar and Unipolar motor.
• Only one connection can be used, either 4 pole terminal block or JST XHP-5 pin connector.
• It is possible to share power supply with 2 EKF and battery backup if battery backup is galvanic isolated and the polarity of power
supply is maintained correct. The same should be observed while sharing power supply with EKF and master controller (AI signal)•
• Connect PE either to the or of power connector. If grounding is done in the transformer do not use EKF grounding connector.
Connection overview
EKF 1A
AI1 Analog input 1
COM Common
AI2 Analog input 2 for EKF2A only
COM Common
DO1 Digital output 1
Wire Color scheme
1Green
2 Red
3 Black
4 White
EKF 2A
1 2 3 4
1 2 3 4
1 2 3 4
Koolkey
Koolkey
Kooprog pc tool
Kooprog pc tool
Dip Switch2
Dip Switch1
Dip Switch