Reading the diagnostic display
on the bus coupler
14
UL
15
UA
16
IO/DIAG
RUN
17
ERROR
18
19
AVENTICS | Bus Coupler AES/Valve Driver AV, CANopen | R412018137–BAL–001–AE
11 LED Diagnosis on the Bus Coupler
The bus coupler monitors the power supplies for the electronic components and actuator control.
If they exceed or fall below a set threshold, an error signal will be generated and reported
to the controller. In addition, the status is displayed by the diagnostic LEDs.
The LEDs on the top of the bus coupler report the messages listed in Table 18.
Before commissioning and during operation, regularly check the bus coupler functions
by reading the LEDs.
Table 18:
Meaning of the diagnostic LEDs
Designation
Color
UL (14)
Green
Red
Red
Green/red
UA (15)
Green
Red
Red
IO/DIAG (16)
Green
Green
Red
Red
RUN (17)
Green
Green
Green
Green
ERROR (18)
Red
Red
Red
Red
Red
None (19)
–
State
Meaning
Illuminated
The electronics supply voltage is greater than the lower
tolerance limit (18 V DC).
Flashes
The electronics supply voltage is less than the lower
tolerance limit (18 V DC) and greater than 10 V DC.
Illuminated
The electronics supply voltage is less than 10 V DC.
Off
The electronics supply voltage is significantly less than
10 V DC (limit not defined).
Illuminated
Actuator voltage exceeds the lower tolerance limit
(21.6 V DC).
Flashes
The actuator voltage is less than the lower tolerance limit
(21.6 V DC) and greater than UA-OFF.
Illuminated
The actuator voltage is less than UA-OFF.
Illuminated
The configuration is OK and the backplane is working
perfectly.
Flashes
CANopen address was set incorrectly (address = 0).
Illuminated
Diagnostic message from module present
Flashes
Error in configuration or the function of the backplane
Illuminated
Operation display, module is in the OPERATIONAL state.
Flashes
Module is in the PRE-OPERATIONAL state
slowly
(SLAVE is waiting for the NMT-START telegram from
(2.5 Hz)
the CAN master.)
Flashes
Module is in the "STOPPED" state
(once each
time)
Off
Module is in the INITIALIZING state.
Illuminated
Module is in the BUS OFF state (not active in CANopen bus).
Flashes
Module is in the ERROR PASSIVE state (at least one error
(once each
counter has reached or exceeded the maximum value)
time)
Flashes
Module is in the ERROR CONTROL EVENT state;
(twice each
a heartbeat/monitoring error has occurred
time)
Prerequisite: object 1006 is supported
Flashes (99
Module is in the SYNC ERROR state.
flashes each
The SYNC object was not transmitted within the configured
time)
time.
Off
No bus error detected
–
not assigned
LED Diagnosis on the Bus Coupler
105