Installation MRD TNM4000
Release 02 12/2020
Industrial Switch >TNM4000
28
2.2
Display elements
After the operating voltage is set up, the software starts and initializes itself.
Afterwards, the device performs a self-test. During this process, various LEDs light
up. The process takes around 60 seconds.
Figure 13: Display elements on the rear panel
1 - Device status display elements
2 - Port status display elements
Figure 14: Display elements on the front panel of TNM4000
1 - Device status display elements
2 - Port status display elements
Device state
These LEDs provide information about conditions which affect the operation of
the whole device.
The following table applies to all device variants:
LED
Display
Activity
Meaning
PWR
Power supply
Lights up
The supply voltage 1
and/or
2 are on.
None
The supply voltage 1
and
2 are too low.
SYS
System status
Lights up
The device is starting
and/or
is not ready for
operation.
Flashing
The system is ready for operation.
None
No supply voltage
or
the system is not ready for
operation.
PWR1/2
Power supply
1/2
Lights up
The related supply voltage is on.
None
The related supply voltage is too low.
POE
PoE status
Lights up
PoE function is available.
None
PoE function is not available.