Danfoss EKD 316C Colibri User manual

Electronic superheat controller - Modbus version
Type EKD 316C (Colibri®)
084R8047
084R8047
DKRCC.PI.RR0.A3.02 © Danfoss A/S (AC-MCI / sw), 2016-12
Installation guide
ENGINEERING
TOMORROW
Danfoss
R64-3002.11
Dan
f
oss
R
64-3002.1
ETS Colibri®
English
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.
Supply voltage
24 V AC / DC ±15%, 50/60 Hz, 22 VA / 15 Watt
(the supply voltage is not galvanically
separated from the input and output signals)
Power consumption
Controller
ETS C / KVS C
ETS, KVS, CCM, CCMT
5 VA
7.2 VA
1.3 VA
Input signal
*)Ri: mA: 400 Ohm
V: 50 kOhm
Current signal * 4 - 20 mA or 0 - 20 mA
Voltage signal * 0 - 10 V or 1 - 5 V
Pressure transmitter
e.g. AKS 32R
0.5 - 4.5V DC ratiometric type
(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
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
Environments
Operations 0 – 55 °C / 32 – 131 °F
Transportation -40 – 70 °C / -40 – 158 °F
Humidity 20 - 80 % Rh, none condensing
No shock inuence/vibrations
Enclosure IP 20
Compatible valves Bipolar stepper motor valves
Standalone controller
Danfoss R64-3011.10 D
a
nf
o
ss
R6
4-
30
11
.
1
0
Danfoss 84B2707.10
OD
I/V
I/V
Valve driver
Danfoss 84B3177.10
ETS Colibri®

DKRCC.PI.RR0.A3.02 © Danfoss A/S (AC-MCI / sw), 2016-12
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 tted 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
ammable gases are present, dust, strong vibrations or chock, large and rapid uctuations 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 tted on the board to avoid electrostaticdischarges.
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
baseof the housing.
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
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 specied 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 qualied personnel.
• The device can’t be used as a safety device.
• Liability for injury or damage caused by the incorrect use of the device lies solely with the user.
“Click”
1
2
3
Danfoss 84B2714.11
Dismounting
Pull down the stirrup to dismount unit from din rail

DKRCC.PI.RR0.A3.02 © Danfoss A/S (AC-MCI / sw), 2016-12
Connection overview table
Function Position Pin name Description
Power
supply
124V L/+ Power supply
2 24V N/ -
Battery
backup
3Bat+ 24 V DC
Battery backup
4BAT-
Stepper
motor
driver
5A1
Stepper motor
6A2
7B1
8B2
Data com-
munication
9 RS485 B -
RS485 Modbus/
external display
EKA 164A
10 RS485 A+
11 Shield
12 12 V
13 GND
Tempera-
ture sensor
14 S2 Pt 1000
15 GND Common ground
for S2 / S4
16 S4 Pt 1000 sensor
Pressure
transmitter
17 5 V Supply +
18 sig Output +
19 GND Common -
External
reference
20 DI Switch
21 GND (-) Common ground
for 20 /22
22 Sig (+) Analog signal
Not in use 23 – –
Alarm
24 Com Common
25 NC Normal closed
26 NO Normal open
Connections
ETS Colibri® EKD 316C
White A1 5
Black A2 6
Red B1 7
Green B2 8
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.
Po
wer supply
24
V AC / DC
Battery
back-up
Temperature
sensor S2
Temperature
sensor S4
Alarm
relay
DI
switch
Pressure
transmitter P0
AKS 32R
Modbus EKA 164A
ETS C valve
or similar
Danfoss 84B3186.10
+
–
- common
+ supply
+ output
17
18 19
NC Com NO
Fuse 2 A
12
3
Connection overview
1
14 15

DKRCC.PI.RR0.A3.02 © Danfoss A/S (AC-MCI / sw), 2016-12
Application dependent connections
A. Superheat control
Terminals Necessary connections
14 - 15 Pt 1000 sensor at eavaporator outlet
(S2) for measuring superheat.
15 - 16 Pt 1000 sensor for measuring air
temperature (S4).
17 - 19
Pressure transmitter type AKS 32R.
Note:
The signal cannot be shared with
other controllers.
B. Control of the valve opening degree with analog
signal
21 - 22 Current signal or voltage signal from
other regulation (Ext. Ref.)
C. Control of the valve with Modbus signal
9 - 10 Operation via RS 485
data communication
Application dependent /optional Connections
A. Connection for standalone controller.
B. Connection for Valve Driver
using analog signal.
Po
wer supply
24
V AC / DC
Battery
back-up
Temperature
sensor S2
Temperature
sensor S4
Alarm relay
DI
switch
Pressure
transmitter P0
Modbus
EKA 164A
ETS C valve
or similar
Danfoss 84B3183.10
+
–
e
m
p
eratur
e
en
sor
S2
Ala
rm
rel
ay
D
I
E
KA 1
64
Danfoss 84B3183.1
0
+
Fuse 2 A
Battery
back-up
Modbus
EKA 164A
ETS C valve
or similar
Danfoss 84B3184.10
Alarm relay
Po
wer supply
24
V AC / DC
+
–
PLC controller Analog signal
+
–
Fuse 2 A
C. Connection for valve driver using
Modbus signal.
Battery
back-up
DI
switch
Modbus
PL
C controller
ETS C valve
or similar
Danfoss 84B3185.10
Po
wer supply
24
V AC / DC
+
–
Alarm relay
Fuse 2 A
DI
P
LC c
o
n
t
D
anfos
s
8
4B3185.10
+
Ala
rm
rel
ay
F
u
s
e 2A

DKRCC.PI.RR0.A3.02 © Danfoss A/S (AC-MCI / sw), 2016-12
OD
OD
OD
OD
1/2- 5/8in.
12 - 16 mm
3/4- 7/8in.
18 - 22 mm
1 - 13/8in.
25 - 35 mm
13/8in. and higher
35 mm and higher
Danfoss 84N366.11
EKD 316C
EKD 316C
Danfoss 84N402.10
Power supply
• Grounding of secondary (output) of transformer is not recommended.
• Do not reverse the polarity of the power connection cables and avoid ground loops (i.e. avoid connecting one
eld device to several controllers as this may result in short circuits and can damage your device.
• Use individual transformers for EKD 316C controller to avoid possible interference or grounding problems in
the power supply.
EKD 316C
EKD 316C
Danfoss
84N401.10
Danfoss 60G496.10
Evaporator outlet
Conductive
paste
Important Note
• Mount sensor on a clean
surface without any paints.
• Remember to put on heat
conducting paste and
insulate the sensor.
• Sensor mounting max. 5 cm
from the outlet of the
evaporatorto get the precise
measurements.
Danfoss
84N403.10
Close to the
evaporator
Evaporator
Sensor mounting: Temperature sensor
Pressure transmitter
Installation of the pressure transmitter is less critical, but mounting of pressure transmitter should be closer to
the temperature sensor, right after the evaporator and with its head in upright position"
Relay Outputs
EKD 316C has 1 relay outputs:
• SPDT relay, connected to terminals 24 - 26 can be used either to connect solenoid valve or to connect alarm.
• Relay is designed for switching max. 24 V, 1A resistive - Class II.
1 2 3

DKRCC.PI.RR0.A3.02 © Danfoss A/S (AC-MCI / sw), 2016-12
Connecting external display EKA 164A
To setup the EKD 316C an EKA 164A display is needed. The display can be used not only for setting up the
necessary parameter but also to use as an external display during operating to show the important
parameters i.e. opening degree of the valve, superheat etc.
Important Note:
• Max. distance between controller and display is 30 m.
• The supply voltage to the display must be maintained at 12 V ± 15%.
• Terminal resistor of 120 Ohm is recomanded at both sides of the wire for
length longer than 1 m to prevent electrical noice.
L = max. 30 m
EKA 164A EKD 316 C
EKD 316C
Danfoss 84B3192.11
910 12
11 13
12 V
A+B-
R
R
Warning
Separate the sensor and digital input cables as much as possible (at least 3 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).
R = 120 Ohm, min. 0.25 Watt
EKA 164A
Cable and wiring
• The 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. In general, for the cable distance upto
10 m, it is recommended to use cable with wire size 22AWG or lower. For cable distance up to 30 m, wire diameter
of 20 AWG or lower is recommended.
• In case of electrical noises in the system, use cable lter AK 211.
• Keep controller and sensor wiring well separated from mains wiring. Minimum recommended distance 30mm.
• Connecting sensors by wires more than 6 m long may decrease the accuracy of measured values.
• Sensors and secondary (output) of transformer may not be grounded simultaneously.
Connecting Modbus
• For the modbus cable, it is best to use 24 AWG shielded twisted-pair cable with a shunt capacitance of
16 pF/ft and 100Ω impedance.
• The controller provides an insulated RS485 communication interface which is connected to terminals 9 to 11
(see connection overview).
• The max. permissible number of devices simultaneously connected to RS485 output is 32 of full load device.
The maximum length of RS485 cable is 1000 m.
• Termination resistors 120 Ohm for terminal devices are recommended for length > 1 m.
In EKD 316C communication frequency (baudrate) can be one of the following:
9600 baud, 19200 baud and 38400 baud.
• The only available xed communication settings in EKD 316C are 8 data bit, EVEN parity and 1 stop bit.
The default unit address is 240 which, can be changed using parameter “03 unit address”.
Detail explanation on Modbus installation and software parameter setting can be found on
Installation guide RC8AC602 and manual DKRCC.PS.RI0.F1.02.
Modbus
A+
B-
Not in use
Gnd
Danf
oss
84N404.10

DKRCC.PI.RR0.A3.02 © Danfoss A/S (AC-MCI / sw), 2016-12
Stepper Motor Output
• All Valves are driven in a bipolar mode with a 24V supply that is chopped to control the current (Current driver).
• The stepper motor is connected to terminals 5 to 8 (see terminal assignment) with M12 motor cable.
• To congure stepper motor valves other than Danfoss stepper motor valve, it is necessary to set the right
valve parameters as described on section Valve conguration. The default valve setting in EKD 316C is
16 (i.e. ‘non’)
• It is neccesary to dene correct valve in ‘Valve type’ i,e parameter n03. The overview of the valve types has
been dened in section “valve overview”.
Valve overview
n03 EKA 164A Danfoss valve type n37 n38
0 ETS 12.5, ETS 25, KVS 15 262 300
1 ETS 50, CCM 10, CCM 20, CCM30 262 300
2 ETS 100, CCM 40 353 300
3 ETS 250, KVS 42 381 300
4 ETS 400 381 300
5 User dened - -
6 UKV/SKV/VKV/PKV 24 16
7ETS 6 24 16
8 CCMT 2, CCMT 4, CCMT 8 110 220
9 CCMT 16 80 200
10 CCMT 24 140 200
11 CCMT 30 230 200
12 CCMT 42 220 200
13 CTR 660 75
14 CCMT 0 24 16
15 CCMT 1 24 16
16 No valve selected 10 160
17 ETS 12C, ETS 24C, ETS 25C, ETS 50C, ETS 100C, KVS 2C, KVS 3C, KVS 5C 60 160

DKRCC.PI.RR0.A3.02 © Danfoss A/S (AC-MCI / sw), 2016-12
A. Setting controller in Superheat control mode.
Make sure that r12 = 0 (OFF) and change the settings
The setting will depends on the system requirement.
Select Refrigerant
o30 = 1-42 (default non selected)
Select valve type
n03 = 0 - 9 (default is “non” i.e non valve selected).
On using EKA 164A display, check the valve
overview chart.
Dene pressure sensor range in gauge bar
o20 = Min. Transducer pressure
o21 = Max. Transducer pressure
Set the application mode
For MSS control n21 = 1 (default)
For Load dene control n21 = 2
Dene min/max superheat
n10 = min. superheat reference
n09 = max. superheat reference
For xed superheat dene n09 = n10
Dene MOP (optional)
n11 = maximum operating pressure
(default is 20 bar, max. 200 = MOP o)
Set force opening of the valve ( optional)
Start OD% (n17)
StartUp time (n15)
To start the supeheat control
Set r12= ON
Parameter setup
Danfoss
84B3193.10
B.Setting controller in valve driver mode
using analog signal
Make sure that r12 = 0 (OFF) and change the
settings so they t to their application:
Select Appication mode
o61 = 1 (remote/AI control)
Select Analog signal type
o10 = 2 (4-20mA)
(for other analog signal check the parameter list)
Select valve type
n03 = 17 (valve type, ETS C = 17)
for other valve types refer to valve overview table.
To start the controller in Valve driver mode
Set r12 = ON
For detail parameter list and explanation, please check the EKD 316C Manual.
Application specic setup
A. Superheat control
Use as controller (SH).
B. Valve driver
Using analog signal.
Parameter Name PNU Value Value
o10 Ai type 2027 No signal 0 - 20 mA / 4 - 20 mA / 0 - 10 V / 1 - 5 V
o18 Manual control 2075 No override No override
o30 Refrigerant 2551 See EKD instruction for
refrigerant setting.
See EKD instruction for
refrigerant setting.
o61 App. mode 2077 2 = Superheat 1= Valve driver using analog signal
o20 Min. trans. press. 2034 Min. value on transmitter -
021 Max. trans. press 2033 Max. value on transmitter -
r12 Main switch 117 On On
Valve conguration
Parameter Name PNU Description
n03 Valve type 3002 Dene the proper valve type, check Valve overview for detail
n37 Max. steps x 10 3032 Total number of full steps. on using EKA display, 800 step is
display as 80.
n38 Max. step / second (PPS) 3033 dene the require/recommended steps per sec.
n39 Start backlash (% of FS) 3034 (extra closing steps at 0 % opening (in % of n37))
n40 Backlash (steps) 3035 Compensation for spindle play
n56 Motor current (mA) 3051 Dene the require current in mA RMS.
Note: Please refer to Danfoss EKD 316 manual for details.

DKRCC.PI.RR0.A3.02 © Danfoss A/S (AC-MCI / sw), 2016-12
EKD 316C – Parameter identication (Modbus)
Lock - the value can only be changed when the main switch is o
PNU - equivalent to to the modbus register no. (modbus adress + 1).
Actual value
Values are read/written as 16 bit integer values without decimals. This is the default value as read via modbus.
Scale
This shows the scaling factor of the value. *1 means that there is no scaling. *10 means that the read value
is 10 times larger thanthe actual value.
Parameter PNU R/W Lock Min. Max. Default Actual
value
Scale
Regula-
tion
Control
r12 Main switch (O = 0 /
On = 1) 117 R/W - 0 1 0 0 *1
o10 AI type (0: no signal
1: 0-20 mA, 2: 4-20 mA
3: 0-10 V, 4: 1-5 V)
o61 should be set to 1 in
order to use this feature
2027 R/W - 0 4 0 0 *1
o18 Manual control 2075 R/W - 0 3 0 0 *1
o45 Manual OD% 2064 R/W - 0 100 0 0 *1
o56 Reg. type
1= Normal
2 = With inner loop
2076 R/W x 1 2 1 1 *1
o61 Appl.mode
1: Valve driver mode using
analogue signal
2: Superheat regulation
2077 R/W x 1 2 2 2 *1
Valve n03 Valve type
Ref. valve overview 3002 R/W x 0 17 16 1 *1
n32 ETS OD% Max 3023 R/W - 0 100 100 100 *1
n37 Max. steps [Stp] 3032 R/W x 10 999 60 60 *1
n38 Max. Stp/Sec (Hz) 3033 R/W x 5 300 160 160 *1
n39 Start backlash [%] 3034 R/W x 0 100 10 3 *1
n40 Backlash [Stp] 3035 R/W x 0 100 0 0 *1
n56 Motor current (mA RMS) 3051 R/W x 0 600 0 0 *1
h22 Holding current [%] 2198 R/W x 0 100 0 0 *1
Refrige-
rant
o30 Refrigerant
(Ref. appendix 1) 2551 R/W x 0 42 0 0 *1
--- Rfg.Fac.A1 2548 R/W - 8000 - 10428 10428 *1
--- Rfg.Fac.A2 2549 R/W - -4000 - -2255 -2255 *1
--- Rfg.Fac.A3 2550 R/W - 1000 3000 2557 2557 *1
Sensors r05 Temp.unit 105 R/W - 0 1 0 0 *1
r09 Adjust S2 [K] 113 R/W - -1 10 0 0 x10
r10 Adjust S4 [K] 114 R/W - -1 10 0 0 x10
o20 Min. Trans. Pres.
(bar relative) 2034 R/W - -1 0 -1 -10 *10
o21 Max. Trans. Pres.
(bar relative) 2033 R/W - 1 200 12 120 *10
o99 Enable high pressure alarm 2199 R/W - 0 1 0 0 *1

DKRCC.PI.RR0.A3.02 © Danfoss A/S (AC-MCI / sw), 2016-12
Installation considerations
Accidental damage, poor installation, or site conditions can give rice to malfunctions of the control system, and
lead to a plant breakdown. Every possible safeguard is incorporated into our products to prevent this. However, an
incorrect installation, for example, could still present problems. Electronic controls are no substitute for normal,
good engineering practice. Danfoss will not be responsible for any goods, or plant components, damaged as a result
of the above defects. It is the installers responsibility to check the installation thoroughly, and to t the necessary
safety devices. Particular attention is drawn to the need for a “force closing” signal to controllers in the event of
compressor stoppage and to the signal requirement for suction line accumulators.
Your local Danfoss agent will be pleased to assist with further advice, etc.
Parameter PNU R/W Lock Min. Max. Default Actual
value
Scale
Injection
control
n04 Kp factor 3003 R/W - 0.5 20 2 20 *10
n05 Tn seconds 3004 R/W - 30 600 120 120 *1
n06 Td seconds 3005 R/W - 0 90 0 0 *1
n09 Max SH 3015 R/W - 1 100 10 100 *10
n10 Min SH 3021 R/W - 1 100 6 60 *10
n11 MOP [bar] (max = o ) 3013 R/W - 0 200 20 200 *10
n15 Start time [sec] 3017 R/W - 1 90 0 0 *1
n17 MinOdAtStart [%] 3012 R/W - 0 100 0 0 *1
n18 Stability 3014 R/W - 0 10 5 5 *1
n19 Kp min. 3024 R/W - 0 1 0.3 3 *10
n20 Kp T0 3025 R/W - 0 10 0.4 4 *10
n21 SH mode
1= MSS, 2 = Load app. 3026 R/W - 1 2 1 1 *1
n22 SH close [K] 3027 R/W - 1 15 4 40 *10
n44 TnT0 sec. 3039 R/W - 10 120 30 30 *1
Service --- AL/Light rel 2509 R - 0 1 0 0 *1
--- Reset alarm 2046 R/W - 0 1 0 0 *1
--- EKC State 2007 R - 0 100 0 0 *1
Alarms A34 A34 Battery low 10035 R/W - 0 1 0 0 *1
--- Standby 20000 R - 0 1 0 0 *1
--- EKC Error 20001 R - 0 1 0 0 *1
--- S2 Error 20002 R - 0 1 0 0 *1
--- S3 Error 20003 R - 0 1 0 0 *1
--- Peinp. error 20004 R - 0 1 0 0 *1
--- AI inp.error 20005 R - 0 1 0 0 *1
--- No Rfg. Sel. 20006 R - 0 1 0 0 *1
Read out u06 Analog input [mA] 2504 R - 0 30 0 0 *10
u10 DI1 status 2002 R - 0 1 0 0 *1
u20 S2 temp. [°C] 2537 R - -200 200 0 0 *10
u21 Superheat [K] 2536 R - 0 100 0 0 *10
u22 Superheat Ref [K] 2535 R - 0 100 0 0 *10
o03 Unit addr. 2008 R/W x 1 240 240 240 *1
Appendix 1
1 = R12 7 = R13b1 13 = User-dened 19 = R404A 25 = R290 31 = R422A R36 = Opteon
XP10
41 = R449A
2 = R22 8 = R23 14 = R32 20 = R407C 26 = R600 32 = R413A 42 = R452A
3 = R134a 9 = R500 15 = R227 21 = R407A 27 = R600a 33 = R422D 37 = R407F
4 = R502 10 = R503 16 = R401 22 = R407B 28 = R744 34 = 427A 38 = R1234ze
5 = R717 11 = R114 17 = R507 23 = R410A 29 = R1270 35 = R438A 39 = R1234yf
6 = R13 12 = R142b 18 = R402A 24 = R170 30 = R417A 40 = R448A