Emerson EC3-D7 Serie Betriebsanleitung

Description
EC3-D7x is the superheat controller with
TCP/IP connection for stepper motor driven
Alco Electrical Control Valves EX4...EX6 and
is optimized to operate with the Copeland
Digital Scroll series utilizing a 0-10V input
from a third party controller. The controller
synchronizes the PWM digital compressor
solenoid valve with the
superheat controlled by the electrical control valve; EX series. The EC3-D73 has the
same functionality but can only be set-up via the ECD-002 display. It has no external
communication functionality.
Note: This document contains short form instructions for experienced users.
!
Safety instructions:
• Read installation instructions thoroughly. Failure to comply can result in device
failure, system damage or personal injury.
The product is intended for use by persons having the appropriate knowledge and
•
skills.
• Disconnect all voltages from system before installation.
• Do not operate the system before all cable connections are completed.
• Comply with the local electrical regulations when wiring.
Note: The EC3-D7x series contains
acid battery. The battery must NOT be disposed of with other commercial waste.
Instead, it is the user's responsibility to pass it to a designated collection point for the
safe recycling of batteries (harmonised directive 98/101/EEC). For further information
contact your local environmental recycling centre.
Technical data
Power supply
Power consumption
Plug-in connector
Grounding
Protection class
COM, TCP/IP connection
Connection to optional local
ECD-002
Digital Input; Cooling
demand
Digital Input; Comp2
running
NTC input; Coil-out
temperature sensor
NTC input; Discharge
temperature sensor
4-20 mA Analog input
4-20 mA Analog output
Deviation from input signal
Output alarm relay
(If L2 = 1) Activated:
Deactivated:
Output pump down relay
(If L2 = 1) Activated: During normal operation
Deactivated: All other conditions
If the output relays are not utilized, the user must ensure appropriate safety
!
precautions are in place to protect the system against damage caused by a power
failure.
Output Digital Scroll
Triac
Stepper motor output for
EX4...EX6
Ambient temperature range 0 ... 60°C
In order to provide system protection in the event of power loss, it is recommended
!
to change the battery annually.
Mounting
The EC3-D7x is designed to be mounted onto a standard DIN rail.
Electrical installation
Refer to the electrical wiring diagram for electrical connections.
•
• Do not apply voltage to the controller before completion of wiring.
• Ground the metal housing with a 6.3mm spade connector.
Emerson Climate Technologies GmbH
Am Borsigturm 31 I 13507 Berlin I Germany
Downloaded from www.Manualslib.com
EC3-D7x Digital Superheat Controller
EC3-D72 with TCP/IP communication capability
a VRLA battery= valve regulated rechargeable lead-
24VAC ±10%; 50/60Hz; 1A
25VA max. including EX4 ... EX6
Removable screw terminals wire size 0,14 .. .1,5 mm
6,3 mm spade earth connector
IP20
RJ45 Ethernet
ECC-Nxx or CAT5 cable with RJ45 connectors
0/24VAC/DC for stop/start function. EX valve closes
during stop command. Typically thermostat or third party
controller.
0/24VAC/DC typically connected to auxiliary connection.
EX valve control loop remains active when input is 24V
and the Digital Scroll is idle.
Emerson temperature sensor ECN-N60 or ECN-P60
Copeland® NTC 86 kOhm at 25 °C
Emerson PT5-07M / PT5-18M / PT5-30M
rd
For connection to any 3 party controller with 12/24VDC
power supply and appropriate burden
±8% max
SPDT contact 24V AC/DC, 2 Amp inductive load
During normal operation (no alarm condition)
During alarm condition or power supply is OFF
SPDT contact 24V AC/DC, 2 Amp inductive load
24V or 230V AC output to activate PWM valve on Digital
Scroll
Maximum current 0.6A with nominal 24VDC operating
voltage
1 ... 25°C (for best battery life time)
> 35°C battery life time < 2 years
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Operating instruction
• Important: Keep the controller and sensor wirings well separated from the mains
wiring. Minimum recommended distance 30mm.
Warning: Use a class II category transformer for the 24VAC power supply. Do not
ground the 24VAC lines. We recommend using individual transformers for the EC3
controller and for 3
problems in the power supply. Connecting any EC3 inputs to the mains voltage will
permanently damage the EC3.
Digital input status is dependant on operation of compressor/0-10V input
System
Operating
condition
Comp. 1 &
Comp.2 in stop
mode
Comp. 1 in run &
Comp.2 in stop
mode)
Comp 1 & Comp.
2 in run mode
Comp.1 in stop
and Comp. 2 in
run mode starts
Digital comp. should always be regarded as base load; compressor 1
Wiring
2
A: White wire
C: Blue wire
E: M12 Plug cable assembly EX5-Nxx for
connection to EX4/EX5/EX6
F: 24V/230V Triac output to the PWM
Digital Scroll valve
G: Remote control panel, system
controller
H: Alarm relay, dry contact. Relay coil is
not energised at Alarm or power off
!
The use of the relay is essential to protect
the system in case of a power failure; if the
communications interface or the ECD-002
is not utilized.
I: Digital input 1: "Cooling demand"
(Digital compressor run: (0V/open =
Stop; 24V/closed = Control Start;)
Date: 13.06.2016
rd
party controllers to avoid possible interference or grounding
Digital Inputs 0-10V input from third party controller
"Cooling demand" ECV remains closed irrespective of voltage
open (0V) input value
"Comp 2 Running"
open (0V)
ECV active
"Cooling demand" Input =0V: digital valve capacity at 10%
closed (24V) / default capacity.
"Comp 2 Running" When the digital comp. is in by-pass the
open (0V) ECV will:
Close when capacity is <70%
Be inhibited when the capacity is >70%
"Cooling demand" ECV active
closed (24V) / The ECV will always modulate even when
"Comp 2 Running" the digital compressor is in by-pass mode.
closed (24V)
"Cooling demand" ECV remains closed irrespective of voltage
open (0V) / input value
"Comp 2 Running"
closed (24V)
B: Black wire J: Transformer Class II, 24VAC
D: Brown wire secondary / 25VA min. Model ECT-
323
K: Third party controller (can use the
suction pressure (4-20mA) analogue
output signal from the EC3)
L: Pump down relay, dry contact. Relay
is energized during normal operation.
M: Digital input 2: "Comp. 2 running"
(0V/open = Comp. 2 stop; 24V/closed
= Comp. 2 running
N: Discharge Temp. Sensor
Copeland® NTC
O: 0-10V Digital Scroll capacity
demand signal from the system
controller
P: ECN-N60 Coil out sensor
EC3-D72_OI_EN_R05_865019.docx