Danfoss EKC 315A - Technical Data and Connections; Product Specifications (Data); Ordering Information; Electrical Connections

User Guide | Superheat controller, EKC 315A
© Danfoss | DCS (ADAP-KOOL®) | 2015-03
DKRCI.PS.RP0.D2.02 | 520H7653 | 10
Data
Ordering
Data communication
Supply voltage
24 V a.c. +/-15% 50/60 Hz, (80 VA)
(the supply voltage is galvanically separated from the
input and output signals)
Power consump-
tion
Controller
TQ actuator
AKV coil
5 VA
75 VA
55 VA
Input signal
Current signal 4-20 mA or 0-20 mA
Pressure transmitter 4-20 mA from AKS 33
Digital input from external contact function
Sensor input 2 pcs. Pt 1000 ohm
Output signal
Current signal 4-20 mA or 0-20 mA
Load Max. 200 ohm
Relay output 1 pcs. SPST
250 V a.c.
AC-1: 4 A (ohmic)
AC-15: 3 A (inductive)
Alarm relay 1 pcs. SPST
Actuator
Input (from TQ)
Temperature signal from sen-
sor in the TQ actuator
Output (AKV, TQ) Pulsating 24 V a.c. to actuator
Output
ICAD mounted on
ICM
Current signal
4-20 mA or 0-20 mA
Data communica-
tion
Possible to connect a data communication module
Environments
0 to +55°C, during operations
-40 to +70°C, during transport
20 - 80% Rh, not condensed
No shock inuence / vibrations
Enclosure IP 20
Weight 300 g
Mounting DIN rail
Display LED, 3 digits
Terminals max. 2.5 mm
2
multicore
Approvals
EU Low Voltage Directive and EMC demands re CE-
marking complied with.
LVD-tested acc. to EN 60730-1 and EN 60730-2-9
EMC-tested acc. to EN50081-1 and EN 50082-2
Type Function Code no.
EKC 315A Superheat controller 084B7086
EKA 175
Data communication module
(accessories), (RS 485 module)
084B7093
EKA 174
Data communication module
(accessories), (RS 485 module)
with galvanic separation
084B7124
Temperature sensor Pt 1000 ohm / Pressure transmitter type AKS 33 / TQ
Valves / AKV valves: ............. .........................Kindly refer to catalogue RK0YG...
ICM/ICAD valves: ...........................................Kindly refer to DKRCI.PD.HT0.A
Necessary connections
Terminals:
25-26 Supply voltage 24 V a.c.
17-18 Only at TQ actuator: Signal from actuator
20-21 Pt 1000 sensor at evaporator outlet (S2)
14-15 Pressure transmitter type AKS 33
9-10 Relay switch for start/stop of solenoid valve
1-2 Switch function for start/stop of regulation. If a switch is
not connected, terminals 1 and 2 must be shortcircuited.
Application dependent connections
Terminals:
21-22 Pt 1000 sensor for measuring air temperature (S3)
12-13 Alarm relay
There is connection between 12 and 13 in alarm situa tions
and when the controller is dead
18-19 Current signal from other regulation (Ext.Ref.)
23-24 Supply to actuator AKV / TQ
2-5 Current output for showing superheat or air temperature.
Or for signal to a slave module. Or control from ICM valve.
3-4 Data communication
Mount only, if a data communication module has been
mounted.
It is important that the installation of the data communi-
cation cable be done correctly. Cf. separate literature No.
RC8AC...
Connections
Wire length TQ:
See appendix 2
(TQ is out of production)
ICAD must be sup-
plied with 24 V DC
from an external
source.