Beckhoff EL922 Series Documentation page 42

Mounting and wiring
Meaning of the LEDs and button LED EL9221-xxxx
LED Color
Button LED 1 This button LED 1 indicates the status of output 1
Green
Orange
Red
Run LED Run LED indicates the EtherCAT operating state of the terminal
Green
Ready LED Ready LED indicates the status for overcurrent protection / programming mode / query mode
Green
Orange
Red
The EL9221-xxxx has an illuminated push-button!
The illuminated push-button allows operation of the overcurrent protection terminal such as switch-
ing 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.
42
Meaning
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)
on Output 1 switched on + prewarning threshold reached
Flash (af- Output 1 disabled (nominal current value is set to "OFF")
ter press-
ing)
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.)
on Output 1 triggered
flashing Output 1 triggered and cooling phase active
off
State of the EtherCAT State Machine [} 94]: INIT = initialization of the terminal
flashing State of the EtherCAT State Machine: PREOP = function for mailbox communication and
different default settings set
Single
State of the EtherCAT State Machine: SAFEOP = verification of the Sync Manager [} 96]
flash
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 up-
dates [} 154]
on 24 V DC supply voltage present and initialization completed, overcurrent protection active,
operation mode active
on Programming mode / query mode active
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)
Version: 1.0 EL922x