Operating instructions
EXD-TEVI Economizer Controller with
ModBus Communication Capability
Emerson Climate Technologies GmbH
www.emersonclimate.eu
3/3
Holzhauser Straße 180 I 13509 Berlin I Germany
Date: 19.08.2014
EXD-TEVI_OI_EN_R02_865908.docx
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;
the “uPL” message appears very short followed by “End” message for 5
seconds.
•
Note: If the “Err” message is displayed for failed programming, repeat the
above procedure.
Downloading procedure (configured parameters from key to other
controllers)
•
Turn off power to new controller
•
Insert a loaded Key (with stored data from reference controller) into new
controller and turn on the power supply.
•
The stored parameters of the key will be downloaded automatically into the new
controller memory. The “doL” message appears very short followed by a “End”
message for 5 seconds.
•
The new controller with new loaded parameters setting will start to operate after
“End” message disappears.
•
Remove the key.
Note: If the “Err” message is displayed for failed programming, repeat the above
procedure.
Insert programming key here
Error/Alarm handling:
Alarm
code
Description
Alarm relay
Valve
What to do?
Reset Type
1E0
EVI pressure sensor fail
Triggered
Fully close
Check wiring connection and measure the signal 4 to 20 mA
Auto
1E1
EVI suction temp. sensor fail
Triggered
Operating
Check wiring connection and measure the resistance of sensor
Auto
1Ed
Hot gas temp. sensor 1 fail
Triggered
Fully close
Check wiring connection and measure the resistance of sensor
Auto
2Ed
Hot gas temp. sensor 2 fail
Triggered
Fully close
Check wiring connection and measure the resistance of sensor
Auto
1
Π
-
EXM/EXL electrical connection error
Triggered
-
Check wiring connection and measure the resistance of winding
Auto
2
Π
-
EXM/EXL electrical connection error
Triggered
-
Check wiring connection and measure the resistance of winding
Auto
1Ad
Discharge hot gas 1 temperature above
limit
Triggered
Operating
Check valve opening / check liquid flow for flash gas free / check
discharge hot gas temperature sensor
Auto
2Ad
Discharge hot gas 2 temperature above
limit
Triggered
Operating
Check valve opening / check liquid flow for flash gas free / check
discharge hot gas temperature sensor
Auto
Err
Failed uploading / downloading
-
-
Repeat again the procedure for uploading/downloading
Auto
Note: When multiple alarms occur, the highest priority alarm is displayed until being cleared, then the next highest alarm is displayed until all alarms are cleared. Only then
will parameters be shown again.
Technical data:
Power supply
24VAC/DC ±10%; 1A
Power consumption
EXD-TEVI: 20VA
Plug-in connector
Removable screw terminals wire size 0.14 .. 1.5 mm
2
Protection class
IP20
Digital Inputs
Potential free contacts (free from voltage)
Temperature sensors
ECN-N30 (T EVI)
For 86k
Ω
NTC Discharge Temperature sensors (T D1/T D2) see Copeland
documentation
Pressure sensor
PT5
Output alarm relay
SPDT contact 24V AC 1 Amp inductive load;
24V AC/DC 4 Amp resistive load
Activated/energized: During normal operation (no alarm condition)
Deactivated/de-energized: During alarm condition or power supply is OFF
If the output relay is not utilized, the user must ensure appropriate
safety precautions are in place to protect the system.
Stepper motor output
Coil: EXM-125/EXL-125
Valves: EXM-… /EXL-…
Marking
CE
,
Dimensions: [mm]
!
70
35
35
1
1
7
,5
Ø4,3
11
0
1
2
5
,5
4
5
59,5
