Miscellaneous - Danfoss ERC 21 Series User Manual

Electronic refrigeration control, type ERC 21X

Miscellaneous

Table 13: Miscellaneous
Code Parameter description
o--
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 Desired configuration for digital input 1 (DI1)
nC= Not configured
Sdc = Status display output
doo = Door alarm with resumption
doA = Door alarm without resumption
SCH = Main switch
nig = Day/Night mode
rFd = Reference displasement
EAL = External alarm
dEF = Defrost
Pud = Pull down
Sc = Condensor Sensor
o03 Serial Address
Data communication is possible by using external TTL to RS485 converter
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.
o15 Display Resolution
This parameter defines the steps in which the temperature must be displayed by 0.1 or 0.5 or 1
o37 Desired configuration for digital input 2 (DI2)
nC= Not configured
Sdc = Status display output
doo = Door alarm with resumption
doA = Door alarm without resumption
SCH = Main switch, nig = Day/ Night mode
rFd = Reference displasement
EAL = External alarm
dEF = Defrost
Pud = Pull down
o38 This defines the method to control cabinet light
on= Always on
dAn = Day/Night
doo=Based on door action
o67 Save settings as factory
This parameter when set to YES , The current controller Parameter settings are stored as Factory default.
 WARNING:
Original factory settings are overwritten
o91 Display during defrost
You can set what is to be displayed during defrost here.
Air = actual air temperature
FrE = freezed temperature (display the temperature just before starting defrost)
-d- = -d- is displayed
P--
P73 DI1 input polarity
no (normally open) = associated functionality is activated when DI1 port is short circuit and deactivated when DI1 port is
open circuit.
nc (normally closed) = associated functionality is activated when DI1 port is open circuit and deactivated when DI1 port is
short circuit.
P74 DI2 input polarity
no (normally open) = associated functionality is activated when DI2 port is short circuit and deactivated when DI2 port is
open circuit.
nc (normally closed) = associated functionality is activated when DI2 port is open circuit and deactivated when DI2 port is
short circuit.
P75 Invert alarm relay
Alarm relay operation can be inverted here
0=normal, 1= invert relay action
P76 Key board lock enable
Setting this parameter as "YES" enables controller keypad lock functionality after 5 minutes of no activity on the keypad.
When the keypad is locked any button press shows "LoC" in the display. Press UP and DOWN buttons simultaneously for 3
seconds to unlock the keyboard. "unl" is displayed for 3 seconds.
© Danfoss | Climate Solutions | 2023.01
Min. Max.
0 600
nC Sc
0 247
0 999
0.1 1.0
nC Pud
on doo
no YES
Air -d-
no nc
no nc
0 1
no YES
BC194286421698en-000901 | 21
Unit
sec
No
No