EL9221-xxxx

LEDs and connection

Meaning of the connections

Terminal point		Description
Name	No.	Description
Digital input 1	1	Digital input for switching output 1 (negative edge; 0 V reference as supply)
24 V power supply	2	+24 V DC input voltage (internally connected to terminal point 6)
0 V power supply	3	0 V DC input voltage (internally connected to terminal point 7 and power contact 0 V)
	4	Not used
Protected output 1	5	Protected + 24 V DC (internally connected to positive power contact)
Protected output 1 via power contact		Protected + 24 V DC (internally connected to output 1)
24 V power supply	6	+24 V DC input voltage (internally connected to terminal point 2)
0 V power supply	7	0 V DC input voltage (internally connected to terminal point 3 and power contact 0 V)
	8	Not used

Meaning of the LEDs and button LED EL9221-xxxx

LED	Color	Meaning
Button LED 1	Button LED 1 indicates the status of output 1
	Green	off	Output 1 switched off
		on	Output 1 switched on
		flashing	Programming mode active: Permissible nominal current value for output 1 can be read with flashing code (1x flashing = 1 A; 2x flashing = 2 A, etc.).
		flickering	Switch-off process not yet completed, wiring error: voltage detected at switched-off output ( with Ready LED green)
	Orange	on	Output 1 switched on + prewarning threshold reached
		Flash (after pressing)	Output 1 disabled (nominal current value is set to "OFF")
		flashing	Reverse current active or Query mode or programming mode active (additionally orange Ready LED is on): Nominal current value cannot be changed because disabled or fixed variant; set nominal current value for output 1 can be read with flashing code (1x flashing = 1 A; 2x flashing = 2 A; etc.)
	Red	on	Output 1 triggered
	Red	flashing	Output 1 triggered and cooling phase active
Run LED	Run LED indicates the EtherCAT operating state of the terminal
	Green	off	State of the EtherCAT State Machine: INIT = initialization of the terminal
		flashing	State of the EtherCAT State Machine: PREOP = function for mailbox communication and different default settings set
		Single flash	State of the EtherCAT State Machine: SAFEOP = verification of the Sync Manager channels and the distributed clocks. The outputs remain in safe state.
		on	State of the EtherCAT State Machine: OP = normal operating state; mailbox and process data communication is possible
		flickering	State of the EtherCAT State Machine: BOOTSTRAP = function for terminal firmware updates
Ready LED	Ready LED indicates the status for overcurrent protection / programming mode / query mode
	Green	on	24 V DC supply voltage present and initialization completed, overcurrent protection active, operation mode active
	Orange	on	Programming mode / query mode active
	Red	on	Missing 24 V DC supply voltage or initialization error
		flashing	Loading the factory settings
		flickering	Wiring error or cable break (e.g. wrong ground reference)

	The EL9221-xxxx has an illuminated push-button! The illuminated push-button allows operation of the overcurrent protection terminal such as switching on and off and resetting the output. It is also used for programming and querying the nominal current. There are 3 modes: operation mode, programming mode and query mode. With the EL9221-xxxx, only push-button LED 1 has a function, since it is a 1-channel version.

Overview of the 3 operation modes:

Operation mode
The operation mode is active as soon as the overcurrent protection terminal is supplied with supply voltage, the initialization has been successfully completed and no other mode is active. This is effectively the normal mode of operation.

Programming mode
The programming mode is available for the adjustable overcurrent protection terminals. To enter this mode, press and hold the button in operation mode for more than 3 seconds.

Query mode
The query mode exists for the fixed overcurrent protection terminals, which are not adjustable. If programming is disabled for the adjustable overcurrent protection terminals, only the query mode is available. No changes can be made in query mode, i.e. it is only intended for querying the nominal current value. To enter this mode, press and hold the button in operation mode for more than 3 seconds.

For operation in the respective modes, please refer to the table LED buttons Operation / Programming.

Button LED Operation / Programming

LED	State	Meaning
Operation in operation mode
Button LED 1	Press briefly	Switching output 1 on and off or resetting it
Button LED 1	Long press (>3s)	Activating the programming or query mode
Operation in programming mode
Button LED 1	Press briefly	Set nominal current value for output 1, press 1x = 1 A, press 2x = 2 A etc. up to press 10x = 10 A, press more than 11x = OFF For variants up to 4 A, press more than 5x = OFF applies
Button LED 1	Long press (>3s)	Saving the nominal current value and leaving the programming mode
No operation for 45 seconds		After 45 seconds, the programming mode is automatically exited without saving the settings.
Operation in query mode
Button LED 1	Press briefly	No function
Button LED 1	Long press (>3s)	Exiting the query mode
No operation for 45 seconds		After 45 seconds, the settings query mode is automatically exited again

	Sample programming Further sample programming can be found in chapter "Sample programming".

	Behavior of the outputs when the settings are changed If settings are changed during operation (outputs are switched on), the outputs remain switched on. This has the advantage that the system can remain in operation and a change can be made "online".