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FR · ERC 21X user manual · DKRCC.ES.RL0.H3.02/520H9656 · ©Danfoss
Menu code Parameter description
C04
Compressor OFF delay at door open
This parameter sets the delay in minutes before the compressor stops when the door is opened.
If set to zero, the function is disabled.
C70
Zero crossing selection
This feature will increase the relay life time, reduce the contact welding and switching noise by switching ON
at Zero crossing. Disable zero crossing when external relay is used.
o--
Others
o01
Delay of outputs at startup
After start-up the controller functions can be delayed by the time delay defined here so that overloading of the
electricity supply network is avoided.
o02
DI1 configuration
Here you can configure the DI1 to one of the functions listed below.
oFF=not used
Sdc=status display output
doo=door alarm with resumption
(door function). When the input is open it signals that the door is open.
Compressor/heater and fan are stopped after “C04 Compressor door open delay”. After the time mentioned by
“DI1 Delay” from the time door is opened, an alarm will be given and refrigeration will be resumed.
doA=door alarm without resumption
(door alarm). When the input is open it signals that the door is open.
Compressor/heater and fan are stopped after “C04 Compressor door open delay” and will stay off until the door
is closed. After the time mentioned by “DI1 Delay” from the time door is opened, an alarm will be given
(and refrigeration will not be resumed).
SCH=main switch
. Regulation is carried out when the input is short-circuited, and regulation is stopped when
the input is put in position OFF.
nig=day/night mode
. When the input is short-circuited, there will be regulation for night operation.
rFd=reference displacement
. Value in “r40” is added to the reference “r00” when the input is short-circuited
EAL=external alarm
. Alarm will be given when the input is short-circuited.
dEF=defrost
. Defrost is initiated when the input is short-circuited. Edge triggering is used. Defrost exit can take
place by time, temperature or by manually pressing defrost push button on the front panel.
Pud=pull down
. Pull down is initiated when the input is short-circuited. Edge triggering is used.
It will come out of pull down based on time and temperature defined under parameter “
r96
” and “
r97
” or can be
stopped manually by pressing pull down push button on front panel.
Sc=condenser sensor
o03
Serial address
Data communication is possible through external TTL to RS485 gateway.
o05
Password
If the settings in the controller are to be protected with an access code you can set a numerical value between
0 and 999. You can cancel the function by setting to 0.
o06
Sensor type selection
This parameter is for defining type of temperature sensors connected to the controller.
User can configure NTC 5 K, NTC 10 K, PTC and PT1000 sensors in this controller.
All the mounted sensors (Sair, S5 and Sc)must be of same type.
o07
Cooling/heating
This parameter is applicable only for single relay controller (ERC211) for selecting cooling or heating
application.
o15
Display resolution
This parameter defines the steps in which the temperature must be displayed by 0.1 or 0.5 or 1.
o23
Relay 1 counter
The number of cycles for the “DO1” relay can be read in this menu.
The read value is multiplied by 100 to obtain the number of cycles.
On reaching 999x100 cycles the counts stops and is reset to 0.
o24
Relay 2 counter
The number of cycles for the “DO2” relay can be read in this menu.
The read value is multiplied by 100 to obtain the number of cycles.
On reaching 999x100 cycles the counts stops and is reset to 0.
o25
Relay 3 counter
The number of cycles for the DO3 relay can be read in this menu.
The read value is multiplied by 100 to obtain the number of cycles.
On reaching 999x100 cycles the counts stops and is reset to 0.
