Carel EVD4, User Manual, Page: 40 / 48

40
ENGL
ISH
EVD
4
+030220227 - rel. 2.1 - 12.06.2008
APPENDIX III. PARAMETER SETTINGS
Application Refrigerant* Valve type S1 probe limits
Min [bar] S1 probe limits
Max [bar] “CH Circuit
EEV ratio” CH Superheat
set [°C] CH Proportional gain CH Integral
time [sec] “Derivative
time [sec]”
Chiller
NB consider double CH
Proportinal Gain in case
of Inverter or Stepless
Compressor
1 = R22;
2 = R134a;
3 = R404a;
4 = R407c;
5 = R410a;
6 = R507a;
7 = R290;
8 = R600;
9 = R600a;
10 = R717;
11 = R744;
12 = R728;
13 = R1270 0 = CAREL E2V
1 = Sporlan SER 0.5-20
2 = Sporlan SEI 30
3 = Sporlan SEH 50-250
4 = Alco EX5-EX6
5 = Alco EX7
6 = Alco EX8 330 step/s
7 = Alco EX8 500 step/s
8 = Danfoss ETS-25/50
9 = Danfoss ETS-100
10 = CAREL E2V*P
11 = Danfoss ETS-250/400
> 12 Custom
See pressure probe technical leafl
et
See pressure probe technical leafl
et
70 6
CAREL E2V = 4
Alco Ex5/6 = 7
Sporlan 0.5/20, Alco Ex7 = 10
Sporlan 30, Alco Ex8, Danfoss
ETS = 25
Sporlan 50/250 = 45
35
1
Chiller low temperature
NB consider double CH
Proportinal Gain in case
of Inverter or Stepless
Compressor
70 6
CAREL E2V = 3
Alco Ex5/6 = 6
Sporlan 0.5/20, Alco Ex7 = 12
Sporlan 30, Alco Ex8, Danfoss
ETS = 18
Sporlan 50/250 = 35
30
Cold room packaged
50 6
CAREL E2V = 3
Alco Ex5/6 = 6
Sporlan 0.5/20, Alco Ex7 = 8
Sporlan 30, Alco Ex8, Danfoss
ETS = 18
Sporlan 50/250 = 35
50
Cold room centralized
50 6
CAREL E2V = 7
Alco Ex5/6 = 10
Sporlan 0.5/20, Alco Ex7 = 10
Sporlan 30, Alco Ex8, Danfoss
ETS = 25
Sporlan 50/250 = 45
70
Air conditioner
NB consider double CH
Proportinal Gain in case
of Inverter or Stepless
Compressor
70 6
CAREL E2V = 3
Alco Ex5/6 = 6
Sporlan 0.5/20, Alco Ex7 = 8
Sporlan 30, Alco Ex8, Danfoss
ETS = 18
Sporlan 50/250 = 35
35
Display cabinet plug-in
50 12
CAREL E2V = 5
Alco Ex5/6 = 8
Sporlan 0.5/20, Alco Ex7 = 10
Sporlan 30, Alco Ex8, Danfoss
ETS = 25
Sporlan 50/250 = 45
60
Display cabinet centralized
50 12
CAREL E2V = 7
Alco Ex5/6 = 10
Sporlan 0.5/20, Alco Ex7 = 10
Sporlan 30, Alco Ex8, Danfoss
ETS = 25
Sporlan 50/250 = 45
100
* Consult the electronic expansion valve technical documentation to check the complete valve-driver system compatibility with the chosen refrigerant
The following values are recommended as a reference and starting point for the confi guration of the
EVD400 and the PID control.
The users can then check whether or not these values are correct based on their own acceptability
criteria, and then change them if necessary.
N.B.: the pressure probe is connected to S1.
Primary
Secondary:
Ch low Superheat: Recommended value 2°C with superheat set point greater than 4°C.
If the superheat set point is lower, the low superheat threshold must also be reduced, guaranteeing a
difference of at least 2 °C between the two.
Low SH int. time: Recommended value 1.0 seconds with a threshold of 2°C. If the threshold is lower,
the time must also be reduced to 0.5 seconds. N.B.: A value of 0 (zero) seconds completely disables the
protection.
LOP cool mode: Recommended value from 5 °C to 10 °C below the typical minimum saturated evapo-
ration temperature of the installation. Example: for chillers with a rated evaporation temperature of 3 °C
and a minimum tolerated evaporation temperature of -1 °C, set the LOP Limit to -6 °C
LOP integral time: Recommended value 2 seconds, to be increased to approx. 10 seconds if the action
is too intense (excessive opening of the valve as a response to low pressure) and reduced to 1 second
if the action is insuffi cient (excessively low evaporation temperature). N.B.: A value of 0 (zero) seconds
completely disables the protection.
MOP startup delay: Recommended value 60 seconds, however the changeability of the starting dyna-
mics of different units means the time needs to be optimised: in the set time the evaporation pressure
must fall below the value set for “MOP cool mode” to effectively activate the MOP.
MOP cool mode: The value set depends on the refrigerating unit and its design, and is indeed a design
value of the unit: no recommendations can be made.
MOP integral time: Recommended value 2 seconds, to be increased to approx. 10 seconds if the action
is too intense (excessive closing of the valve as a response to high pressure) and reduced to 1 second if
the action is insuffi cient (excessively high evaporation temperature).
N.B.: A value of 0 (zero) seconds completely disables the protection.