CoP
Compressor settings
"CSL"
Min. 50 rpm
Max. 500 rpm
Default 200 rpm
Min speed
Minimum operating speed of variable speed compressor. The actual rpm is multiplied by 10 to the selected value,
hence read actual rpm=value*10.
"CSH"
Min. 50 rpm
Max. 500 rpm
Default 450 rpm
Max speed
Maximum operating speed of variable speed compressor. The actual rpm is multiplied by 10 to the selected value,
hence read actual rpm=value*10.
"CSS"
Min. 50 rpm
Max. 500 rpm
Default 200 rpm
Start speed
Start speed is the speed at compressor must start before changing to the requested speed to ensure the proper lubrication.
The actual rpm is multiplied by 10 to the selected value, hence read actual rpm=value*10.
"HdS"
Min. 50 rpm
Max. 500 rpm
Default 200 rpm
Hot gas Defrost Speed
Required compressor speed during hot gas defrost. The actual rpm is multiplied by 10 to the selected value,
hence read actual rpm=value*10.
"CtP"
Min. 0 %
Max. 100 %
Default 100 %
Cabinet Temperature Percentage
If compressor is controlled based on the weighted average temperature of cabinet air and evaporator sensors, this parameter
defines the percentage of cabinet air temperature to be considered for the calculation of weighted average temperature.
For example, CtP= 40% , SCo=5°C and EuA =3°C. Weighted average temperature = 0.4 x 5 + 0.6 x 3 = 3.8°C
"SSS"
Min. 0 rpm
Max. 150 rpm
Default 25 rpm
Step size
In order to achieve lower start and stop noise compressor is made to start at certain speed and then ramp up / ramp down to
the desired speed. This is the rate at which compressor must ramp up and ramp down from start and stop speed. Ramp up and
ramp down rate to ensure smooth start and stop of compressor and reduce compressor noise during start and stop. The actual
rpm is multiplied by 10 to the selected value, hence read actual rpm=value*10.
"CoF"
Min. 10 Hz
Max. 200 Hz
Default 50 Hz
Off frequency
This is required frequency from the controller to give stop signal to the compressor. Any frequency below this is considered as
stop frequency.
"uFL"
Min. 10 Hz
Max. 200 Hz
Default 66 Hz
Minimum Frequency
Required input frequency from the controller corresponding to minimum speed of the compressor
(Compressor speed in rpm = Frequency in Hz * Multiplication factor)
"uFH"
Min. 10 Hz
Max. 200 Hz
Default 150 Hz
Maximum frequency
Required Input frequency from the controller corresponding to Maximum speed of the compressor
(Compressor speed in rpm = Frequency in Hz * Multiplication factor)
"uLF"
Min. 1
Max. 100
Default 30
Multiplication factor
Multiplication factor used in the compressor to calculate the required speed based on the received frequency signal
(Compressor speed in rpm = Frequency in Hz * Multiplication factor)
"PPF"
Min. 0
Max. 100
Default 50
Proportional Gain(Kp)
Propotional gain to be used in the PI controller Proportional gain value to be defined based on the required capacity adaptation
speed
"PIF"
Min. 0
Max. 100
Default 3
Integral Gain( Ki)
Integral gain to be used in the PI controller, Integral gain value to be defined based on the required capacity adaptation speed.
"PcI"
Min. 0
Max. 999
Default 100
Integral Time constant(Ti)
Integral time constant to be used in the PI controller, Integral Time Constant value to be defined based on the required capacity
adaptation speed
"EHd"
Default no
Sensor Error handling Type
Method to handle the refrigeration system in case of cabinet sensor error.
"no": no sensor error handling.
"SEt": Run the refrigeration system based on error run/stop time.
User Guide | ERC 112D VSC Refrigeration Controller
14 | BC286552322855en-000201
© Danfoss | DCS (vt) | 2019.07