Danfoss EKD 316C Installation guide

ENGINEERING

TOMORROW

Installation guide

<![if ! IE]>

<![endif]>084R8047

Electronic superheat controller - Modbus version

Type EKD 316C (Colibri®)

English

<![if ! IE]> <![endif]>084R8047

Introduction

EKD 316 is a superheat controller that can be used where there are requirements for accurate control of superheat.

Typically it will operate in Commercial air conditioning, heat pumps, commercial refrigeration, food retail and

industrial application. Compatible valve - Danfoss ETS / ETS C, KVS / KVS C and CCM / CCMT valves.

24 V AC / DC ±15%, 50/60 Hz, 22 VA / 15 Watt

Supply voltage

(the supply voltage is not galvanically

separated from the input and output signals)

Controller

5 VA

Power consumption

ETS C / KVS C

7.2 VA

ETS, KVS, CCM, CCMT

1.3 VA

Current signal *

4 - 20 mA or 0 - 20 mA

Input signal

Voltage signal *

0 - 10 V or 1 - 5 V

*)Ri: mA: 400 Ohm

Pressure transmitter

0.5 - 4.5V DC ratiometric type

V: 50 kOhm

e.g. AKS 32R

(10% - 90% of supply voltage)

Digital input from external contact function

Sensor input

2 pcs. Pt 1000 ohm

DI : < 800 Ohm = ON

DI : > 30 kOhm = OFF

<![if ! IE]> <![endif]>Danfoss 84B3177.10

Alarm relay

1 pcs. SPDT

Max 24V, 1A resistive - Class II

Step motor output

Pulsating 30 - 300 mA

Data communication

RS 485 Modbus data communication

Operations

0 – 55 °C / 32 – 131 °F

Environments

Transportation

-40 – 70 °C / -40 – 158 °F

Humidity 20 - 80 % Rh, none condensing

No shock influence/vibrations

<![if ! IE]> <![endif]>UK

Enclosure

IP 20

<![if ! IE]> <![endif]>Denham,

Compatible valves

Bipolar stepper motor valves

Standalone controller

Danfoss

<![if ! IE]> <![endif]>4LH

R64-3002.1

<![if ! IE]> <![endif]>UB9

ETS Colibri®

<![if ! IE]> <![endif]>Ltd. Oxford Road,

I/V

<![if ! IE]> <![endif]>only:Danfoss

Valve driver

<![if ! IE]> <![endif]>oassnfD 0.30R6111-4

<![if ! IE]> <![endif]>customersUK

ETS Colibri®

<![if ! IE]> <![endif]>Info for

© Danfoss | Climate Solutions | 2021.03

AN220086430005en-000502 | 1

DIN rail mounting / dismounting

The unit can be mounted onto a 35 mm DIN rail (in accordance with EN 5022) simply by snapping it into place and securing it with a stopper to prevent sliding. It is dismounted by gently pulling the stirrup located in the base of the housing.

1

<![if ! IE]>

<![endif]>Danfoss 84B2714.11

2

“Click” 3	Dismounting
	Pull down the stirrup to dismount unit from din rail

General warnings

•Every use that is not described in this manual is considered incorrect and is not authorised by the manufacturer.

•Verify that the installation and operating conditions of the device respect the ones specified in the manual, specially concerning the supply voltage and environmental conditions.

•This device contains live electrical components therefore all the service and maintenance operations must be performed by qualified personnel.

•The device cannot be used as a safety device.

•Liability for injury or damage caused by the incorrect use of the device lies solely with the user.

Installation warnings

-The installation must be executed according the local standards and legislation of the country.

-Always operate on the electrical connections with the device disconnected from the main power supply.

-Before carrying out any maintenance operations on the device, disconnect all the electrical connections.

-For safety reasons the appliance must be fitted inside an electrical panel with no live parts accessible.

-Don’t expose the device to continuous water sprays or to relative humidity greater than 80%.

-Avoid exposure to corrosive or pollutant gases, natural elements, environments where explosives or mixes of flammable gases are present, dust, strong vibrations or chock, large and rapid fluctuations in ambient temperature that in combination with high humidity can condensate, strong magnetic and/or radio interference

(e.g. transmitting antennae).

-When connecting loads beware of the maximum current for each relay and connector.

-Use cable ends suitable for the corresponding connectors. After tightening the screws of connectors, slightly tug the cables to check their tightness.

-Use appropriate data communication cables. Refer to the Fieldbus Installation Guide for the kind of cable to be used and setup recommendations.

-Reduce the path of the probe and digital inputs cables as much as possible, and avoid spiral paths enclosing power devices. Separate from inductive loads and power cables to avoid possible electromagnetic noises.

-Avoid touching or nearly touching the electronic components fitted on the board to avoid electrostatic discharges.

Warnings

•Use a class II category transformer for 24 V AC power supply.

•Do not ground the 24 V AC wires.

•By connecting any EKD 316C inputs to mains voltage will permanently damage the controller.

•Do not apply voltage to the controller before the wiring is completed.

Connection of the terminals to earth will destroy the controller.

1,2 3,4 21,22

© Danfoss | Climate Solutions | 2021.03

AN220086430005en-000502 | 2

Connection overview
	ETS C valve
Battery	or similar
back-up
Power supply
24 V AC / DC	Modbus
–
+	EKA 164A
Fuse 2 A
1

<![if ! IE]>

<![endif]>Danfoss84B3186.10

14 15

Temperature				DI	Alarm
sensor S2
Temperature				switch	relay
sensor S4
				Pressure
				transmitter P0
				32R
	<![if ! IE]> <![endif]>17	<![if ! IE]> <![endif]>18	<![if ! IE]> <![endif]>19
		1 3 2

	Connections
	ETS Colibri®		EKD 316C
	White	A1	5
	Black	A2	6
	Red	B1	7
	Green	B2	8
	Connection overview table
	Function	Position	Pin name	Description
	Power	1	24V L/+	Power supply
	supply	2	24V N/ -
	Battery	3	Bat+	24 V DC
	backup	4	BAT-	Battery backup
		5	A1
	Stepper
		6	A2
	motor			Stepper motor
		7	B1
	driver
		8	B2
		9	RS485 B -
	Data	10	RS485 A+	RS485 Modbus/
	communi-	11	Shield	external display
	cation			EKA 164A
		12	12 V
		13	GND
		14	S2	Pt 1000
	Tempera-	15	GND	Common ground
	ture sensor			for S2 / S4
		16	S4	Pt 1000 sensor
	Pressure	17	5 V	Supply +
		18	sig	Output +
	transmitter
		19	GND	Common -
		20	DI	Switch
	External	21	GND (-)	Common ground
	reference			for 20 /22
		22	Sig (+)	Analog signal
	Not in use	23	–	–
		24	Com	Common
	Alarm	25	NC	Normal closed
		26	NO	Normal open

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.

© Danfoss | Climate Solutions | 2021.03

AN220086430005en-000502 | 3