Product Overview

© Danfoss | DCS | 2019.04
Data sheet | Superheat controller type EKE 1A, EKE 1B, EKE 1C
DKRCC.PD.RS0.A4.02 | 20
6.7.1 Cable length
Separate the sensor and digital input cables
as much as possible (at least 10 cm) from the
power cables to the loads to avoid possible
electromagnetic disturbance.
Use separate cable trays.
Long DI input should be avoided.
Min 10-15 cm
Danfoss 84B3206.10
Note:
Never lay power cables and
probe cables in the same
conduits (including those in the
electrical panels)
6.7 Cabling
EKE controller supports the following max. cable length.
Cable length Wire size (Min. / Max.)
Analog inputs (Current/Voltage) max. 10 m 0.14 /1.5 mm2
Temperature sensor max. 10 m** -
Stepper valve connection max. 30 m* 0.14 /1.5 mm2
Power supply max. 5 m 0.2 /2.5 mm2
Digital input max. 10 m 0.14 /1.5 mm2
Digital output - 0.2 /2.5 mm2
Digital MMI max. 3 m over CAN RJ -
Communication bus max. 1000 m 0.14 /1.5 mm2
*For longer cable refer section ‘’ For non Danfoss M12 cable’’ and Parameter setting for long M12 cable.
** For longer temperature sensor cables use oset parameter (U107) if there is any deviation in temperature.
Recommended wire size and cable distance (twisted pair) between EKE controller and stepper motor valve.
Cable length 1 m – 15 m 15 m – 30 m 30 m – 50 m
Wire diameter 0.52 / 0.33 mm2
20 / 22 AWG
Min. 0.52 mm2
20 AWG
Min. 0.82 mm2
18 AWG
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.
Apart from the cable selection, it is suggested to do the following parameter changes to the given valves.
Parameter setting for long M12 cable.
Product 0m - 15 m cable 15m - 30 m cable 30m - 50 m cable
Update following parameter
ETS 12C - ETS 100C
KVS 2C - KVS 5C
Use default
values
I028 Valve drive current = 925mA peak I028 Valve drive current = 1000mA peak
I065 Valve duty cycle = 90 %
ETS 12.5 - ETS 400
KVS 15 - KVS 42
CTR 20
CCMT 2 - CCMT 8
CCM 10 - CCM 40
Use default
values
I028 Valve drive current = 200 mA peak I028 Valve drive current = 300mA peak
ETS 6 Use default
values
I028 Valve drive current = 270mA peak I028 Valve drive current = 350mA peak
CCMT 0 Use default
values
I028 Valve drive current = 270mA peak I028 Valve drive current = 350mA peak
CCMT 1 Use default
values
I028 Valve drive current = 400mA peak I028 Valve drive current = 500mA peak
CCMT 16 - CCMT 42 Use default
values
I028 Valve drive current = 450mA peak I028 Valve drive current = 500mA peak
Note:
For longer M12 cable than
15m, it is must to set
Danfoss valve as user
dened valve and do
necessary parameter
setttings.
Tips:
First select the correct
Danfoss valve to get the
prole loaded, then select
the user dened valve to
increase the current
value.
For non Danfoss M12
cable