Carel EVD4 User Manual

16
ENGLISH
EVD
4
+030220227 - rel. 2.1 - 12.06.2008
INPUT/OUTPUT group
Parameter name Descriprion
DriverX mode operating mode of the X-th driver, from pCO
EEV mode man. enable/disable manual valve positioning
EEV position calculated electronic expansion valve opening position
Power request cooling capacity, from pCO
RXXX refrigerant confi gured for the REFRIGERANT parameter
Superheat superheat value measured
Saturated temp. see Ev. probe sat. temp.
Suction temp. compressor suction temperature value measured
Evaporation probe Pressure evaporation pressure value measured
Saturated Temp. saturated gas temperature value calculated in the evaporator
Condensation
probe
Pressure condensing pressure value measured, from pCO
Saturated temp saturated gas temperature value calculated in the condenser, calculated from dry on previous condensing pressure
Aux. probe value measured by the auxiliary probe set for the AUX. PROBE CONFIG. parameter
Act. SH set current superheat set point
EVD version H.W driver hardware version
EVD version S.W software version installed on the driver
MAINTENANCE group
Parameter name Description
Manual mng.
driver ‘X’
EEV Mode electronic expansion valve control mode, read EEV mode man.
Requested steps required motor position in manual control.
EEV position calculated electronic expansion valve opening position
Driver ‘X’ status Go ahead enable restart following error
Probes offset S1 correction of the lower limit of S1
Probes offset S2 correction of the lower limit of S2
Probes offset S3 correction of the lower limit of S3
ADVANCED SETTINGS – SPECIAL TOOLS
Not available
ALARMS (for driver ‘X’)
Parameter name Description
alarm probe error active following an error on the signal from the probe
alarm Eeprom error active following an EEPROM memory error
alarm MOP timeout active in conditions with excessive evaporation pressure
alarm LOP timeout active in conditions with insuffi cient evaporation pressure
alarm Low Superheat active in low superheat conditions
EEV not closed active due to failed valve closing
driver X high superheat driver X with high superheat
3.2.3 Start-up
After having connected the EVD
4
, cas described in 3.4.1, confi gure the parameters listed in 3.4.2 using
the display that manages the pCO, according to the application and/or systems used. For the unit to be
correctly operated, the SYSTEM SET and AUTOSETUP levels need to be compiled.
The SYSTEM SET level must be compiled, as this contains the information on what is physically installed
in the system. Selecting the type of driver and enabling any advanced functions will allow access to
specifi c fi elds/masks in this or other menus.
The AUTO SETUP level of parameters must also be compiled, and contains fundamental information on
the type of unit.
The ADVANCED SET branch is not required for standard superheat control and is provided for expert
users and/or to implement non-standard functions.
If some essential fi elds have not been confi gured, the alarm message
– DRIVER “x” AUTOSETUP PROCEDURE NOT COMPLETED –
will prevent the unit from being started until the autosetup procedure has been completed.

Carel EVD4 Specifications

General

Brand	Carel
Model	EVD4
Category	Controller
Language	English