Advertisement
Connection overview
Battery
back-up
Power supply
24 V AC / DC
–
+
Fuse 2 A
1
14 15
Temperature
sensor S2
Temperature
sensor S4
+ output
+ supply
- common
3
1 2
Important notes
Terminals
3 - 4
Battery backup (the voltage will close the ETS valve if the controller looses its supply voltage).
The battery voltage must not be connected from terminals 1 and 2. Power of the battery lower
than 16.5 V will trigger the low battery alarm.
9 - 13
Operation via modbus communication either EKA 164A or system unit + software.
It is important that the installation of the data communication cable is done correctly.
For detail refer to our EKD 316 manual.
20 - 21
Switch function for start / stop of regulation.
Note: If a switch is not connected, terminals 20 and 21 must be short circuited. Do not connect
external power supply to these terminals, else it will damage the controller.
24 - 26
Alarm relay: There is connection between 24 and 26 in alarm situations.
DKRCC.PI.RR0.A3.02
ETS C valve
or similar
Modbus
EKA 164A
Alarm
DI
relay
switch
Pressure
transmitter P0
AKS 32R
Connections
ETS Colibri®
EKD 316C
White
A1
Black
A2
Red
B1
Green
B2
Connection overview table
Function
Position Pin name Description
1
24V L/+
Power
supply
2
24V N/ -
3
Bat+
Battery
backup
4
BAT-
5
A1
Stepper
6
A2
motor
7
B1
driver
8
B2
9
RS485 B -
10
RS485 A+
Data com-
11
Shield
munication
12
12 V
13
GND
14
S2
Tempera-
15
GND
ture sensor
16
S4
17
5 V
Pressure
18
sig
transmitter
19
GND
20
DI
External
21
GND (-)
reference
22
Sig (+)
Not in use
23
24
Com
Alarm
25
NC
26
NO
© Danfoss A/S (AC-MCI / sw), 2016-12
5
6
7
8
Power supply
24 V DC
Battery backup
Stepper motor
RS485 Modbus/
external display
EKA 164A
Pt 1000
Common ground
for S2 / S4
Pt 1000 sensor
Supply +
Output +
Common -
Switch
Common ground
for 20 /22
Analog signal
–
–
Common
Normal closed
Normal open
Advertisement
