Danfoss EKC 315A User Manual page 10

User Guide | Superheat controller, EKC 315A
Data
24 V a.c. +/-15% 50/60 Hz, (80 VA)
Supply voltage (the supply voltage is galvanically separated from the
input and output signals)
Power consump- Controller
tion TQ actuator
AKV coil
Current signal
Input signal
Pressure transmitter 4-20 mA from AKS 33
Digital input from external contact function
Sensor input 2 pcs. Pt 1000 ohm
Current signal
Output signal
Load
Relay output 1 pcs. SPST
Alarm relay 1 pcs. SPST
Input (from TQ)
Output (AKV, TQ)
Actuator
Output
ICAD mounted on
ICM
Data communica-
Possible to connect a data communication module
tion
0 to +55°C, during operations
-40 to +70°C, during transport
Environments
20 - 80% Rh, not condensed
No shock influence / vibrations
Enclosure IP 20
Weight 300 g
Mounting DIN rail
Display LED, 3 digits
Terminals max. 2.5 mm
EU Low Voltage Directive and EMC demands re CE-
marking complied with.
Approvals
LVD-tested acc. to EN 60730-1 and EN 60730-2-9
EMC-tested acc. to EN50081-1 and EN 50082-2
Connections
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...
© Danfoss | DCS (ADAP-KOOL®) | 2015-03
5 VA
75 VA
55 VA
4-20 mA or 0-20 mA
4-20 mA or 0-20 mA
Max. 200 ohm
250 V a.c.
AC-1: 4 A (ohmic)
AC-15: 3 A (inductive)
Temperature signal from sen-
sor in the TQ actuator
Pulsating 24 V a.c. to actuator
Current signal
4-20 mA or 0-20 mA
multicore
2
Ordering
Type Function
EKC 315A Superheat controller
Data communication module
EKA 175
(accessories), (RS 485 module)
Data communication module
EKA 174 (accessories), (RS 485 module)
with galvanic separation
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
Data communication
Code no.
084B7086
084B7093
084B7124
ICAD must be sup-
plied with 24 V DC
from an external
source.
Wire length TQ:
See appendix 2
(TQ is out of production)
DKRCI.PS.RP0.D2.02 | 520H7653 | 10