Owners Manual
Ecos
aire
®
EN Series Precision Air Conditioner
Control Wiring Wiring Installation
Ecos
aire
®
July 2007 41
Data subject to change without notice.
BL
UE
BL
UE
WH
IT
E
WH
IT
E
SHI
E
LD
SHIELD
J11
J12
Expansion Memory
J9
J10
C1
Rx
-/
T
x-
NO1
Rx
+/
T
x+
NO2
GND
NO3
C1
J14
J15
6 5 4 3 2 1 0
+
-
Cable conductor-terminal assignment
terminal
function cable pair conductor
0
GND
1
+VRL
(~30Vdc)
2
GND
3
1
A
Rx/Tx-
4
1
B
Rx/Tx+
5
6
Minimum 24 AWG copper 1-pair
shielded RS-485 cable,
Z0 =120
Ω
ex: Belden3 7200A
Maximum length 1640 ft (500m)
Optional Remote Display
For cable lengths not
exceeding 1640 ft (500m) -
Note: Cables may be supplied by
Dectron, depending on options.
Consult factory for longer cable
requirements.
Short six-conductor data (reversed) modular
telephone cable (by others). See previous
page for cable details. Allow at least 10 inches
of free cable for connection to the display.
The six-pin modular telephone plug (by others)
is to be inserted into the display jack.
Unit Controller
Keep pair together.
DO NOT SPLIT PAIRS.
Minimize untwist.
Insulate shield at this end.
Do not connect shield to a
terminal.
Keep pair together.
DO NOT SPLIT
PAIRS.
Minimize untwist.
1. CAREL USA LLC
Ph: (717) 664-0500
Fax: (717) 664-0449
www.carelusa.com
2.
USA
W.W. Grainger
Ph: 1-888-361-8649
www.grainger.com
Canada
Acklands Grainger
Ph. 1-800-668-8989
www.acklandsgrainger.com
3. Belden
Ph. 314-854-8000
www.belden.com
DC Power Supply
24 - 30 VDC
150 mA
(by others)
Loop the modular telephone cable once
as shown through clamp-on split ferrite
EMI cores (by others). The cores
should have an impedance near 240
Ω
at 100MHz.
ex: Steward 28A0640-0A0
available as Digi-Key1
240-2065-ND
Clamp-on split ferrite EMI
core (by others), as
above.
3-gang wallbox,
by others)
INST
ALLA
TION
Summary of Contents for EN Series
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