Data; Accessories; Ordering; Dimensions - Danfoss EKD 316 Manual

Manual Superheat controller type EKD 316

Data

24 V a.c./d.c. +/-15% 50/60 Hz, 10 VA
Supply voltage (the supply voltage is not galvanically
separated from the input and output signals)
Controller 5 VA
Power consumption
ETS step motor 1.3 VA
Current signal * 4-20 mA or 0-20 mA
Input signal
Voltage signal * 0-10 V or 1-5 V
*)Ri: mA: 400 ohm
Pressure transmitter AKS 32R
V: 50 kohm
Digital input from external contact function
DI : < 800 ohm → ON
Sensor input 2 pcs. Pt 1000 ohm
DI : > 30 kohm → OFF
AC-1: 4 A (ohmic)
Alarm relay 1 pcs. SPDT
AC-15: 3 A (inductive)
Step motor output Pulsating 30 - 300 mA
Data communication Mounted with MODBUS data communication
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
Montage DIN rail
External display type EKA 164A or AK-ST via
Operation
data communication and system unit
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
If battery backup is used, the requirements for
Battery backup
the battery are: 18-24 V d.c. See also page 12.
Max. distance between
30 m
controller and valve

Accessories

Pressure transducer Temperature sensor
AKS 32R, NSK AKS 21, AKS 11
4 DKRCC.PS.RP0.A1.02/520H7142

Ordering

Type Function Code no.
superheat controller
EKD 316 084B8040
(with terminals)
Display
EKA 164A 084B8563
(with MODBUS communication)
084B8582
EKA 183A Programming key

Dimensions

External display Programming key
EKA 164A EKA 183A
©Danfoss A/S (AC-MCI / sw), 2014-03
Manual Superheat controller type EKD 316

Connections

Necessary connections
Terminals:
1-2
Supply voltage 24 V a.c./d.c.
3-4 Battery (the voltage will close the ETS valve if the
controller loses its supply voltage).
The battery voltage must not be connected from terminals 1
and 2.
5-8 Supply to stepper motor
9-13 Operation via data communication
EITHER EKA 164A OR System unit + software.
It is important that the installation of the data communication
cable be done correctly.
Cf. separate literature No. RC8AC...
20-21 Switch function for start/stop of regulation.
Note:
If a switch is not connected, terminals 20 and 21 must be short
circuited.
Application-dependent connections
Superheat control
14-15 Pt 1000 sensor at evaporator outlet (S2)
15-16 Pt 1000 sensor for measuring air temperature (S4)
17-19 Pressure transmitter type AKS 32R
Note:
The signal can not be shared with other controllers
Control of the valves opening degree with analog signal
21-22 Current signal or voltage signal from other regulation
(Ext. Ref.)
24-26 Alarm relay
There is connection between 24 and 26 in alarm situa tions.
Warning
1,2 3,4 21,22
Connection to earth will destroy the controller
©Danfoss A/S (AC-MCI / sw), 2014-03 DKRCC.PS.RP0.A1.02/520H7142
A dedicated transformer must be used.
Connections
ETS/KVS
24V 18V
White 5
Black 6
Red 7
Class II
Green 8
ETS 6/
Saginomiya valves
Orange 5
Yellow 6
Red 7
Black 8
Any external connection with grounding could create a ground
loop through a diode in the rectifier bridge which could destroy
the power supply in EKD 316.
5