Danfoss KoolKey Type EKA 200 Installation Guide

KoolKey is a gateway and programming device that connects Danfoss electronic controllers to a PC. It facilitates online work with controllers using the KoolProg® application and acts as a programming key for parameter settings.

Supported Controller Types

ERC 111, 112, 113
ERC 211, 213, 214
EETc 11, 12, 21, 22 & EETa 2W, 3W
EKF 1A, 2A

Warnings

Ensure to disconnect non-isolated controllers (ERC 11X & EET) from mains power before connecting to KoolKey.
Do not leave the interface cable hanging from a powered-up controller.

KoolKey as a Gateway

Gateway mode enables online work with connected controllers via KoolProg® on a PC. This allows for setting parameters, creating, viewing, and editing controller settings, copying offline program settings to the controller, and monitoring real-time operations for adjustments.

Connection:

Connect KoolKey to a PC using a standard USB cable to the PC's USB port with KoolProg® software installed.
Connect the controller to KoolKey using the interface cable specific to the controller type.
The controller receives power from the PC via the connected KoolKey.

Refer to the KoolProg® User Guide for detailed instructions. Download KoolProg® at: koolprog.danfoss.com.

Diagram Description: Figure 2 illustrates KoolKey connected to a PC via a USB cable and to a controller via an interface cable, showing the gateway setup.

KoolKey as Programming Key

The programming key function transfers parameter settings files between KoolKey and the controller. Parameter files can be transferred to KoolKey like any other storage device. It is recommended to save only the file intended for the target controller.

Steps to program a powered-up controller:

Connect KoolKey to the controller's communication port (TTL/di port) using an interface cable.
Power up the controller using a 120 V/230 V power supply.
Move the slider switch to the required position and briefly press (1 sec) the start button to transfer data.
After successful data transfer, switch off the controller power supply and remove KoolKey.

Note: When programming EET compact (EETc) and EKF controllers, KoolKey requires a power source as shown in Figure 4.

Steps to program an unpowered controller (write function only):

Connect a power bank or a 5 V power supply to the KoolKey USB port.
Connect KoolKey to the controller's TTL/di port using an interface cable.
The write function initiates automatically upon connecting KoolKey to the controller (no start button press needed).

Diagram Description: Figure 3 shows a controller with main power connected, KoolKey attached via an interface cable. Figure 4 shows a controller without main power, powered by a power bank or 5V supply, with KoolKey connected via an interface cable.

Supported Parameter File Formats

Controller	File format	Naming convention
EETa, EETc	.xml	080Nxxxx.xml
ERC 11x	.xml /.erc	080Gxxxx.xml / xxxx.erc
ERC 21x	.xml /.erc	080Gxxxx.xml / xxxx.erc
EKF1A, EKF2A	.xml	080Gxxxx.xml

Note: 'xxxx' represents the last four digits of the controller's code number.

Parameter File Transfer Steps and LED Indications

Function	Action	Illustration	LED Info
Power-up	KoolKey can be powered up by connecting to an external power bank (Mass programming mode) or a powered-up controller (Copy key mode)¹). ¹) Not supported by EETC.	Illustration: A diagram showing the KoolKey with a slider switch and a start button.	The LED will flash red slowly, indicating that KoolKey is powered up. After a few seconds, the LED will turn steady green, indicating successful connection and data transfer readiness.
Write and Read function	a. Write function: Move the slider switch to "Write" position. Short press the start button (1 s) to transfer data from KoolKey to the controller. Note: When KoolKey is connected to a power bank, write functions initiate automatically upon connecting to a controller without pressing the start button. b. Read Function: Move the slider switch to "Read" position. Short press the start button (1 s) to transfer data from the controller to KoolKey. Note: Read function is not supported when KoolKey is powered up from a power bank.	Illustration: Diagrams showing the slider switch in 'Write' and 'Read' positions, and the start button press. Also shows LED indications.	Yellow LED flashes rapidly, indicating parameter file download.
File transfer confirmation	Successful file transfers (Write function can take up to 10 s and read function can take 15 – 20 s to successfully complete) Unsuccessful file transfer (Check connection and ensure compatible programming file saved in KoolKey).	Illustration: Diagrams showing a steady green LED for successful transfer and rapid red flashes for unsuccessful transfer.	Constant green (successful). Rapid red flashes (unsuccessful).

Ordering

Description	Code no.
KoolKey EKA 200	080N0020
Interface cable for EET/EKF - 1m	080N0324
Interface cable for ERC21x - 1m	080N0326
Interface cable for ERC11x - 1m	080N0328

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