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General information:
EXD-TEVI is a stand-alone controller for enhanced wet vapor injection in
heating applications for Copeland tandem Scroll compressors.
Notes: Another controller (like EC3-X33) must be used for main superheat control.
For ModBus communication, protocol and bus topology please see technical bulletin
of EXD-TEVI (www.emersonclimate.eu).
!
Safety instructions:
•
Read operating instructions thoroughly. Failure to comply can result in
device failure, system damage or personal injury.
According to EN 13313 it is intended for use by persons having the
•
appropriate knowledge and skill.
Before installation or service disconnect all voltages from system and device.
•
Do not operate system before all cable connections are completed.
•
•
Entire electrical connections have to comply with local regulations.
Installation:
The EXD-TEVI is designed to be mounted on a standard DIN rail.
Electrical installation:
Refer to the electrical wiring diagram for electrical connections.
•
Important: Keep controller and sensor wiring well separated from mains wiring.
•
Minimum recommended distance 30mm.
EXM-125 and EXL-125 coils are supplied with fix cable and JST terminal block
•
at cable end. Cut the wires close to terminal block. Remove the wire insulation
approximately 7mm at the end. It is recommended to protect wire ends with
ferrules.
Color codes for connection of EXM/EXL and pressure sensor PT5:
•
•
EXM/L BR: Brown; BL: Blue; OR: Orange; YE: Yellow; WH: White
PT5
BN: Brown; WH: White
•
Digital inputs DI1 and DI2
The digital inputs DI1 + DI2 are the interface between EXD-TEVI and system
controller if the Modbus communication has not been used. The digital status is
dependent to operation of system's compressor/demand.
Operating condition
Digital input status
Compressor starts
Closed (Start)
Compressor stops
Open (Stop)
Wiring:
Warnings:
• Use a class II category transformer for 24VAC power supply.
• Do not ground the 24VAC lines.
• Connecting any inputs to mains voltage will permanently damage the EXD-
TEVI.
We recommend using individual transformers for EXD-TEVI controller and any
rd
3
party controllers to avoid possible interference or grounding problems in the
power supply.
Emerson Climate Technologies GmbH
Holzhauser Straße 180 I 13509 Berlin I Germany
Operating instructions
EXD-TEVI Economizer Controller with
ModBus Communication Capability
Notes:
* 86kΩ NTC Discharge Temperature sensors, see Copeland documentation
Alarm relay, dry contact. Relay coil is not energized during alarm condition or
power off.
Display/keypad unit (LEDs and button functions):
www.emersonclimate.eu
Lower Board
ON: Data display
Parameters setting/saving
Blinking: valve is opening
ON: valve is fully open
Date: 19.08.2014
Upper Board
ON: alarm
ON: ModBus
OFF: no alarm
communication
Next
parameter/
value
(higher)
Next
parameter/
value
(lower)
Selecting/
confirming
Blinking: valve is closing
ON: valve is fully close
EXD-TEVI_OI_EN_R02_865908.docx
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Related Manuals for Emerson EXD-TEVI
Summary of Contents for Emerson EXD-TEVI
- Page 1 BN: Brown; WH: White • Digital inputs DI1 and DI2 The digital inputs DI1 + DI2 are the interface between EXD-TEVI and system controller if the Modbus communication has not been used. The digital status is dependent to operation of system’s compressor/demand.
- Page 2 Procedure for Valve Closure: Press for 3 seconds to show data • Apply supply voltage 24V to EXD-TEVI while the digital inputs (DI1 and DI2) • To display data: Press the button for 1 second until index number according are Off (open). The valve(s) will be driven to close position.
- Page 3 Operating instructions EXD-TEVI Economizer Controller with ModBus Communication Capability Upload/download Key: Function For serial production of systems/units, upload/download key allows the transmission of configured parameters among range of identical systems. Uploading procedure (storing configured parameters in key) • Insert the key while the first (reference) controller is ON and press button;...
- Page 4 • Цифровые входы DI1 и DI2 Внимание: Цифровые входы DI1 + DI2 служат для связи EXD-TEVI с системным * Датчики температуры 86kΩ NTC, см. документацию Copeland контроллером, если сеть Modbus не используется. Их состояние зависит от Аварийное реле, сухие контакты. Катушка реле обесточена при аварии или...
- Page 5 систему хладагентом до полного закрытия ЭРВ. Нажмите на 3 секунды для показа данных • Закрытие ЭРВ: Подайте напряжение питания 24 В на EXD-TEVI при разомкнутых Показать данные: Нажимайте в течение 1 секунды пока не появится • цифровых входах (DI1 и DI2). ЭРВ начнёт закрываться.
- Page 6 Инструкция по эксплуатации Контроллеры EXD-TEVI для управления экономайзером с возможностью коммутации к сети ModBus К л ю ч з а г р у з к и / в ы г р у з к и : Ф у н к ц и я...