EL3446 – 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!

EL3446 - LEDs and connection

EL3446 – LED and connection 1:
EL3446 LEDs and connection

Terminal point

Description

Comment

Name

No.

IL1

1

Load/current transformer on channel 1

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

IL2

2

Load/current transformer on channel 2

IL3

3

Load/current transformer on channel 3

N

4

Neutral conductor N
(internally connected to terminal point 8)

IL4

5

Load/current transformer on channel 4

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

IL5

6

Load/current transformer on channel 5

IL6

7

Load/current transformer on channel 6

N

8

Neutral conductor N
(internally connected to terminal point 4)

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,

L1 – L6
OK

green

on

Voltage in the normal range

flashes

Voltage in the critical range
(warning threshold exceeded, Guard Settings see CoE object 0x80n2)

off

Voltage in prohibited range
(error threshold exceeded, Guard Settings see CoE object 0x80n2)

Error

red

on

Error of terminal