34
ENG
“EVD evolution” +030222041 - rel. 1.0 - 01.06.2008
user*
Parameter/description Def. Min. Max. UOM
Type **
CAREL SVP
Modbus®
Notes
C Coefficient ‘B’ for CO
2
control -22,7 -100 800 - A 64 63
ALARM CONFIGURATION
C Low superheat alarm delay (LowSH)
(0= alarm disabled)
300 0 18000 s I 43 170
C Low evaporation temperature alarm delay (LOP)
(0= alarm disabled)
300 0 18000 s I 41 168
C High evaporation temperature alarm delay (MOP)
(0= alarm disabled)
600 0 18000 s I 42 169
C High condensing temperature alarm delay (HiTcond)
(0= alarm disabled)
600 0 18000 s I 44 171
C Low suction temperature alarm threshold -50 -60 (-76) 200 (392) °C(°F) A 26 25
C Low suction temperature alarm delay
(0= alarm disabled)
300 0 18000 s I 9 136
VALVE
C Minimum EEV steps 50 0 9999 step I 30 157
C Maximum EEV steps 480 0 9999 step I 31 158
C EEV closing steps 500 0 9999 step I 36 163
C Rated EEV speed 50 1 2000 step/s I 32 159
C Rated EEV current 450 0 800 mA I 33 160
C EEV holding current 100 0 800 mA I 35 162
C EEV duty cycle 30 1 100 % I 34 161
C Synchronise position in opening 1 0 1 - D 20 19
C Synchronise position in closing 1 0 1 - D 21 20
Tab. 8.a
* User: A= Service (installer), C= Manufacturer.
**Type of variable: A= analogue, D= digital, I= integer
Unit of measure8.1
In the configuration parameters menu, with access by manufacturer
password, the user can choose the unit of measure for the driver:
international system (°C, K, barg);•
imperial system (°F, °R, psig).•
Attention: the drivers EVD evolution-pLAN (code EVD000E1*),
connected in pLAN to a pCO controller, do not manage the change of
the unit of measure.
Note: the units of measure K and °R relate to degrees Kelvin
or Rankine adopted for measuring the superheat and the related
parameters.
When changing the unit of measure, all the values of the parameters
saved on the driver and all the measurements read by the sensors will
be recalculated. This means that when changing the units of measure,
control remains unaltered.
Example 1: The pressure read is 100 barg, this will be immediately
converted to the corresponding value of 1450 psig.
Example 2: The “superheat set point” parameter set to 10 K will be
immediately converted to the corresponding value of 18 °R.
Example 3: The “Temperature S4: maximum alarm value” parameter, set
to 150 °C, will be immediately converted to the corresponding value of
302 °F
Note: because of some internal arithmetics limitations of the driver,
it will not be possible to convert the pressure values higher than 200 barg
(2900 psig) and the temperature values higher than 200 °C (392 °F).
To Next Page
Loading...
Need help?
General
