Danfoss ERC 112D VSC User Manual page 15

User Guide | ERC 112D VSC Refrigeration Controller
"EoF" Frequency during Sensor error
Frequency at which compressor must run during cab air sensor error. In case of cab air sensor error controller will send this
Min. 0 Hz
frequency to compressor drive during Error run time "Ert". and during error stop time it will send the Off frequency "CoF"
Max. 200 Hz
Default 100 Hz
"Ert" Error Run Time
This parameter only become active in the unlikely event of cabinet air sensor error. Ert define the duration the refrigeration
Min. 0 min
system will run during cab air sensor error.
Max. 60 min
Default 5 min
Example: "Ert=4" [min] and "ESt=16" [min] will provide an average cooling system activity of 20%. Ert and "ESt" values must be
configured based on OEM experience
"ESt" Error Stop Time
This parameter only become active in the unlikely event of cabinet air sensor error. ESt define the duration the refrigeration
Min. 0 min
system will stop during cab air sensor error
Max. 60 min
Default 5 min
"CSt" Minimum Stop Time
It determines the minimum number of minutes the compressor must remain idle before a Temperature cut-in can take effect. For
Min. 0 min
example, if the temperature sensor indicates that the cut-in temperature has been reached, but the number of minutes set in this
Max. 30 min
Default 2 min
parameter have not elapsed since the compressor last stopped, then the compressor will stay OFF.
It will only start once the duration given by "CSt" has been reached provided the temperature is still high enough. "CSt" thus
overrides the cut-in.
"Crt" Minimum Run Time
It determines the minimum number of minutes the compressor must run before a Temperature cut-out can take effect. For
Min. 0 min
example, if the temperature sensor indicated that the cut-out temperature has been reached, but the number of minutes set in
Max. 30 min
Default 0 min
this parameter have not elapsed since the compressor last started, then the compressor will continue. It will only stop once the
duration given by "Crt" has been reached – provided the temperature is still low enough.
"Crt" thus overrides the cut-out.
"uSt" Minimum On time at Start Speed
Minimum time the compressor must run at start speed
Min. 0 sec
Max. 30 sec
Default 1 sec
"Cdd" Compressor Door Open Delay/Cdd
This parameter sets the delay in minutes before the compressor stop frequency signal
Min. 0 min
when the door is opened. If set to 15, the function is disabled.
Max. 15 min
Default 15 min
"Srt" System resume after door open
Fan and Compressor resume after cut out by door open.
Min. 0 min
Max. 60 min
Default 0 min
Con Condenser Protection settings
NOTE: A condensor temperature sensor is required to use these parameters.
Condenser protection is generally used in dusty environments where
the condenser may accumulate a layer of dust or dirt and therefore be
at risk of overheating.
"CAL" Condenser Alarm Limit/CAL
This parameter sets the temperature for the condenser at which an alarm
Min. 0°C
will be generated.
Max. 200°C
Default 80°C
"CbL" Condenser Block Limit/CbL
This parameter sets the temperature which if reached will cause the
Min. 0°C
compressor to switch OFF.
Max. 200°C
Default 85°C
"CoL" Condenser OK Limit/CoL
This parameter sets the temperature at which the compressor is
Min. 0°C
allowed to start again after the temperature set in "CbL" above has been
Max. 200°C
exceeded and the compressor stopped.
Default 60°C
© Danfoss | DCS (vt) | 2019.07 BC286552322855en-000201 | 15