Data; Ordering; Connections; Application Dependent Connections - Danfoss EKC 315A User Manual

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
Actuator
Output
Data communica-
Possible to connect a data communication module
tion
Ambient During operation
temperature During transport
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.
23-24 Supply to actuator
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

Terminal:
21-22 Pt 1000 sensor for measuring air temperature (S3)
12-13 Alarm relay
There is connection between 12 and 13 in alarm situations
and when the controller is dead
18-19 Current signal from other regulation (Ext.Ref.)
2-5 Current output for showing superheat or air temperature.
Or for signal to a slave module
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...
10
5 VA
75 VA
55 VA
4-20 mA or 0-20 mA
4-20 mA or 0-20 mA
Max. 200 ohm
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
-10 - 55°C
-40 - 70°C
2 multicore
Manual RS8CS302 © Danfoss 07-2005

Ordering

Type Function
EKC 315A Superheat controller
Data communication module
EKA 173
(accessories), (FTT 10 module)
Data communication module
EKA 175
(accessories), (RS 485 modul)
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...
Data communication
Code no.
084B7086
084B7092
084B7093
084B7124
Wire length TQ:
See appendix 2
EKC 315A