Danfoss EKC 347 - Data Specifications; Connections

10 Manual RS8AX702 DKRCC.ES.R1.A1.02/ 520H4020 © Danfoss 01-2011 EKC 347
Connections
Data communication
Fx
EKC 347 5 VA
20 W coil for AKV 55 VA
Necessary connections
Terminals:
25-26 Supply voltage 24 V a.c.
15-16 Signal from level transmitter type AKS 41 or
14-16 Signal from transmitter 0-10 V
23-24 Expansion valve type AKV or AKVA or
2-5 Expansion valve type: ICM with ICAD
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:
12-13 Alarm relay. See A19 and A18
8-10 Relay for lower level limit. See A18 for setting of ON (cut
in) or OFF (cut out) function
9-10 Relay for upper level limit. There is connection between
9 and 10 when the set value is passed
17-18 ICM valve feedback signal from ICAD 0/4-20 mA
19-21 Current signal or
20-21 Voltage signal from other regulation (for external refer-
ence displacement)
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...
Data
Supply voltage
24 V a.c. +/-15% 50/60 Hz, 60 VA
(the supply voltage is galvanically separated from
the input and output signals. Input/output are
not individual galvanic isolated)
Power consumption
Controller
20 W coil for AKV
5 VA
55 VA
Input signal
* Ri =
0(4)-20mA:100 ohm
0(2)-10 V: 100 kohm
Level signal * 4-20 mA or 0-10 V
Reference displace-
ment *
4-20 mA, 0-20 mA,
2-10 V or 0-10 V
ICM valve feedback
signal *
From ICAD 0/4-20 mA
Contact function start/stop of regulation
Relay output 2 pcs. SPST
AC-1: 4 A (ohmic)
AC-15: 3 A (inductive)
Alarm relay 1 pcs. SPST
Current output
0-20 mA or 4-20 mA
Max. load: 500 ohm
Valve connection
ICM - via current output
AKV/A- via 24 a.c. Pulse-Width Modulating output
Data communication
Possible to connect a data communication
module
Environments
-10 - 55°C, during operation
-40 - 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 EN61000-6-3 and EN 61000-
6-2
AKS 41/41U
AKV/AKVA Coil always 24 V a.c Max. 20 W.
Can also be a relay with coil 24 V a.c.