Danfoss EKE 1C User Manual

Table 10: EKE 1D pinout
COM
Common
AI
Analog inputs NTC 10K
S3/S4 selectable via software
AI2
Analog input NTC 10K
S2
AI3
Analog inputs 0 – 5 V / Ratiometric pressure transmitter
Pe
AI4
analog inputs 0 – 10 V
External Reference signal
COM
Common
DI1
Digital input 1
Main switch (hardware)
DI2/3
Digital input 2 and 3
Software congurable DI
5V+
Power output for Ratiometric pressure transmitter 0 – 5V
COM
Common

NOTE:
• EKE 2U Backup power module is recommended to ensure closure of the electronic valves. in case of power failures
• If Dl1(On/O) switch is not used it must be short circuited
3.4 Cabling lengths for dierent connections
Considerations:
• The max. cable distance between the controller and the valve depends on many factors like shielded/unshielded
cable, the wire size used in the cable, the output power for the controller and EMC.
• Keep controller and sensor wiring well separated from mains wiring.
• Connecting sensors by wires more than the specied length may decrease the accuracy of measured values.
• 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. Never lay power cables and probe cables in the same
conduits (including those in the electrical panels).
• For the CANbus cable, it is best to use 24 AWG shielded twisted-pair cable with a shunt capacitance of 16 pF/ft and
100 Ω impedance.
• The controller provides a communication interface which is connected to the RJ and CAN terminals.
• Terminal resistors 120 Ω for terminal devices are recommended at both ends of the bus (rst and last node)
Terminal resistance between H and R terminals.
Table 11: 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
• All valves are driven 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 Danfoss 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 the conguration section for details).
• The correct valve must be dened in “Valve conguration”, i.e., parameter I067.
Table 12: ETS Colibri / KVS Colibri/ ETS / KVS / CCM / CCMT / CTR
Danfoss M12 Cable
White
Black
Red
Green
ETS Colibri® / KVS Colibri /
CCMT / CTR / CCM Pins
3
4
1
2
EKE terminals
A1
A2
B1
B2
Table 13: ETS 6
Wire color
Orange
Yellow
Red
Black
Gray
EKE terminals
A1
A2
B1
B2
Not connected
© Danfoss | Climate Solutions | 2022.06 BC398828796060en-000101 | 13
Superheat controller, Type EKE 1A, 1B, 1C, 1D

Danfoss EKE 1C Specifications

General

Brand	Danfoss
Model	EKE 1C
Category	Controller
Language	English