EL3403 - LEDs and connection

WARNING

Caution: Risk of electric shock!

If you do not connect the terminal point N with the neutral conductor of your mains supply (e.g. if the KL3403 is used purely for current measurements), terminal point N should be earthed, in order to avoid dangerous overvoltages in the event of a current transformer fault!

WARNING

Caution: Risk of electric shock!

Please note that many manufacturers do not permit their current transformers to be operated in no-load mode! Connect the EL3403 to the secondary windings of the current transformers before using the current transformer!

EL3403 - LEDs and connection 1: — EL3403-xxxx LEDs and connection

EL3403-xxxx - Connection

Terminal point		Description	Comment
Name	No.	Description	Comment
L1	1	Phase L1	Connections for the voltage measurement Note the warnings - " Caution: Risk of electric shock! "
L2	2	Phase L2
L3	3	Phase L3
N	4	Neutral conductor N (internally connected to terminal point I_N, capacitively connected to the earthing contact to the mounting rail)
IL1	5	Consumer at phase L1	Connections for the current transformers. Note the warnings - " Caution: Risk of electric shock! "
IL2	6	Consumer at phase L2
IL3	7	Consumer at phase L3
IN	8	Star point of the current transformers (internally connected to terminal point N, capacitively connected to the earthing contact to the mounting rail)

EL3403-xxxx - LEDs

LED	Color	Meaning
RUN	green	This LED indicates the terminal's operating state:
		off	State of the EtherCAT State Machine: INIT = initialization of the terminal or BOOTSTRAP = function for firmware updates of the terminal
		flashing	State of the EtherCAT State Machine: PREOP = function for mailbox communication and different standard-settings set
		single flash	State of the EtherCAT State Machine: SAFEOP = verification of the Sync Manager channels and the distributed clocks. Outputs remain in safe state
		on	State of the EtherCAT State Machine: OP = normal operating state; mailbox and process data communication is possible
Phase-OK	green	off	Clockwise rotary field
Phase-OK	green	on	Counter-clockwise rotary field
L1-OK	green	on	Voltage on L1 and zero crossing detected
L1-Error	red	on	No voltage detected at L1
L2-OK	green	on	Voltage on L2 and zero crossing detected
L2-Error	red	on	No voltage detected at L2
L3-OK	green	on	Voltage on L3 and zero crossing detected
L3-Error	red	on	No voltage detected at L3

UL compliance

In addition to the information in the Appendix, the following notes are relevant in relation to compliance with Underwriters Laboratories specifications.

NOTICE

Phase voltage according to UL specifications 300 V max.

The maximum phase voltage of 500 V described in the technical data should be limited to 300 V for applications requiring UL approval.

NOTICE

Current transformer

Current measurement inputs with the IDs IL1, IL2, IL3, N may only be connected to isolating current transformers, which limit the available current to max. 5 A, 20 V.