EL3444 – LED and connection

WARNING

Caution: Risk of injury through electric shock!

If you do not connect the terminal point N with the neutral conductor of your mains supply (e.g. when using for current measurement only), terminal point N should be grounded, in order to avoid dangerous overvoltages in the event of a current transformer fault!

WARNING

Caution: Risk of injury through electric shock!

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

EL3444 - LEDs and connection

EL3444 – LED and connection 1:Fig.8: EL3443 LEDs and connection

Terminal point

Description

Comment

Name

No.

I1

1

Input current measurement I1

Connections for the voltage measurement
Note the Warnings above " Caution: Risk of electric shock! "

I2

2

Input current measurement I2

I3

3

Input current measurement I3

I4

4

Input current measurement I4

I1‘

5

Output current measurement I1

Connections for the current transformers. Note the Warnings above " Caution: Risk of electric shock!"

I2‘

6

Output current measurement I2

I3‘

7

Output current measurement I3

I4‘

8

Output current measurement I4

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

flashing rapidly

State of the EtherCAT State Machine:
BOOTSTRAP = function for terminal firmware updates

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.
Outputs remain in safe state.

on

State of the EtherCAT State Machine:
OP = normal operating state; mailbox and process data communication is possible

System OK

green

on

System OK,

(the "SystemOK"-LED is the representation of the "System State" bit, F600:01)

I1 – I4
OK

green

on

Voltage in the normal range

flashes

Voltage in the critical range
(warning threshold exceeded)

off

Voltage in prohibited range
(error threshold exceeded)

Error

red

on