Danfoss EKE 1C

© Danfoss | Climate Solutions | 2023.10
AN269954243889en-000905 | 9
Stepper Motor Output
• All valves are driven in a bipolar mode with a 24V supply chopped to control the current (Current driver).
• The stepper motor is connected to the “Stepper Valve” terminals (see terminal assignment) with a standard M12
connection cable.
• To congure stepper motor valves other than Danfoss stepper motor valves, the correct valve parameters must
be set as described in the Valve conguration section (see manual for details).
• The default valve setting in EKE 1C is: none.
• The correct valve must be dened in “Valve conguration”, i.e. parameter I067. An overview of valve types is
given in the “Parameter identication” section.
Valve Cable Connection
Cable length 1 m – 15 m 15 m – 30 m
Wire diameter
0.52 / 0.33 mm
2
(20 / 22 AWG)
0.33 mm
2
(20 AWG)
Parameter setting for long M12 cable
Product
0 m – 15 m cable 15 m – 30 m cable
Update following parameter
ETS 12C - ETS 100C
KVS 2C - KVS 5C
Use default values I028 Valve drive current= 925 mA peak
ETS 12.5 - ETS 400
KVS 15 - KVS 42
CTR 20
CCMT 2 - CCMT 8
CCM 10 - CCMT 40
Use default values I028 Valve drive current= 200 mA peak
ETS 6 Use default values I028 Valve drive current= 270 mA peak
CCMT 0 Use default values I028 Valve drive current= 270 mA peak
CCMT 1 Use default values I028 Valve drive current= 400 mA peak
CCMT 16 - CCMT 42 Use default values I028 Valve drive current= 450 mA peak
Stepper valve connector
ETS/KVS/CCM/ CCMT/CTR/ CCMT L
(Using Danfoss M12 Cable)
ETS 8M Bipolar ETS 6
A1 White Orange Orange
A2 Black Yellow Yellow
B1 Red Red Red
B2 Green Black Black
Not connected - - Grey
• All valves are driven in a bipolar mode with a 24 V supply chopped to control the current (Current driver).
• The stepper motor is connected to the “Stepper Valve” terminals (see terminal assignment) with a
standard M12 connection cable.
• To congure stepper motor valves other than Danfoss stepper motor valves, the correct valve parameters
must be set as described in the Valve conguration section by selecting user dened valve.
Guideline for long M12 cables on Danfoss stepper motor valves
• Long cables will lead to degradation of performance.
• You can overcome this degradation by changing the settings for the valve driver. This guideline is based on
the cable type being the same type as the standard Danfoss stepper motor cable.
Recommended wire size and cable distance between EKE controller and stepper motor valve