Carel EVD Evolution Twin - 4.4 Checks after commissioning; 4.5 Other functions

ENG
“EVD Evolution TWIN” +0300006EN - rel. 2.6 - 31.01.2019
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The superheat set point and all the parameters corresponding to PID control,
the operation of the protectors and the meaning and use of probes S1/S3
and/or S2/S4 will be automatically set to the values recommended by CAREL
based on the selected application.
During this initial conguration phase, only superheat control mode from 1
to 10 can be set, which dier based on the application (chiller, refrigerated
cabinet, etc.).
In the event of errors in the initial conguration, these parameters can later be
accessed and modied inside the service or manufacturer menu.
If the controller default parameters are restored (RESET procedure, see the
chapter on Installation), when next started the display will again show the
guided commissioning procedure.
4.4 Checks after commissioning
After commissioning:
• check that the valves complete a full closing cycle to perform alignment;
• set, if necessary, in Service or Manufacturer programming mode, the
superheat set point (otherwise keep the value recommended by CAREL
based on the application) and the protection thresholds (LOP, MOP, etc.).
See the chapter on Protectors.
4.5 Other functions
By entering Service programming mode, other types of main control can be
selected (transcritical CO
2
, hot gas bypass, etc.), as well as so-called special
control functions, and suitable values set for the control set point and the
LowSH, LOP and MOP protection thresholds (see the chapter on “Protectors”),
which depend on the specic characteristics of the unit controlled.
By entering Manufacturer programming mode, nally, the operation of
the controller can be completely customised, setting the function of each
parameter. If the parameters corresponding to PID control are modied,
the controller will detect the modication and indicate the main control as
“Customised.