EL2522 - LEDs and connection

Output  A1+

1

Output  A1+

Output  B1+

2

Output  B1+

not connected

3

not connected

Shield

4

Shield, internally connected to pins 8, 12 and 16

Output  A2+, C1+

5

Output A2+, C1+

Output  B2+

6

Output B2+

not connected

7

not connected

Shield

8

Shield, internally connected to pins 4, 12 and 16

Output  A1-

9

Output  A1-

Output  B1-

10

Output  B1-

GND

11

*) from hardware version 04:
GND of the outputs for occasional equipotential bonding

Shield

12

Shield, internally connected to pins 4, 8 and 16

Output  A2-, C1-

13

Output A2-, C1-

Output B2-

14

Output B2-

GND

15

*) from hardware version 04:
GND of the outputs for occasional equipotential bonding

Shield

16

Shield, internally connected to pins 4, 8 and 12

Output A1, A2, B1, B2, C1

green

The LED for the active frequency output A1, A2, B1, B2 or C1; can only be perceived as a glow at half brightness at higher frequencies.

The five LEDs (A2, A2, B1, B2, C1) flash green when U_P (voltage supply of the power contacts) is not available.

RUN

green

This LED indicates the terminal's operating state:

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
Outputs remain in safe state

on

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

flickering/
rapidly flashing

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