Product Overview

© Danfoss | DCS | 2019.04
Data sheet | Superheat controller type EKE 1A, EKE 1B, EKE 1C
DKRCC.PD.RS0.A4.02 | 72
Appendix 3
MMIGRS2 Display setting
Accessing the BIOS menu (LCD display only)
By pressing simultaneously the ESC and ENTER keys for 5 seconds at power up. you enter into a special
BIOS menu; you can go through the voices of the menu using the UP and DOWN keys. conrm your
selection with the ENTER key or discard it with the ESC key.
The menu is as follows:
APPLICATION: to exit the bios menu and return to the application
DISPLAY: to access the display setting menu
CONTRAST: to set the LCD contrast; LEFT=decrement. RIGHT=increment
BRIGHTNESS: to set the LCD brightness; LEFT=decrement. RIGHT=increment
POS / NEG: to switch between positive and negative display using the ENTER key
BUZZER: to set the buzzer volume and disable it; UP=increment. DOWN=decrement
CAN: to access the CAN communication conguration menu.
NODE ID: to set the device address on the CAN network; UP=increment. DOWN=decrement
BAUDRATE: to set the device baud rate on the CAN network (from 10 K to 1 M)
Most of the used common Refrigerants have been dened as a pre selectable prole under
“Refrigerant list para O030”. for unlisted refrigerants, a ”user dened refrigerant” can be use.
Procedure using KoolProg PC Tool
1. Find Refrigerant constants A1, A2 and A3
2. Set Main Switch in controller (R012) to “0”, IF DI switch has been enabled as ON/OFF, set it to OFF
3. Select Refrigerant (O030) to “13”
4. Set the three constants for A1, A2 and A3, under parameter O100, O101 and O102 respectively.
5. Set the min and max refrigerant temperature under parameter O103 and O104 respectively. If you
don’t have this value then use the default settings.
6. Set all other necessary settings
7. Set Main Switch to “1” enabling the controller to start running.
Procedure using MMIGRS2 display
1. Find Refrigerant constants A1, A2, A3
2. Activate the display by pushing a button
3. Push and hold “Enter”
4. Insert Password to access the Main menu
5. Go to “Start / Stop” and set main switch OFF
6. Go back to Main menu with “Escape” button
7. Go to Control Basic
8. Go to Refrigerant type and select “User dened”
9. Set the three constants for A1, A2 and A3, under parameter O100, O101 and O102 respectively.
10. Set the min and max refrigerant temperature under parameter O103 and O104 respectively. If you
don’t have this value then use the default settings.
11. Set all other necessary settings
12. Set main switch to ON enabling the controller to start running.
Appendix 4
Dening new refrigerant
Note:
Before starting to dene this
new refrigerant. It is important
to get the Ant A1. A2. A3 for the
refrigerant from Danfoss