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V1.3 | NRG PROFINET User Manual | © 2020 | CARLO GAVAZZI LTD.
EN
7.
Alarms and Diagnostics
The NRG bus chain is equipped with on-board diagnostics to facilitate troubleshooting. The status of each component
can be identified via the status LEDs on the façade of the product as well as via the communication system.
The errors identified by the NRG controller indicate any identified issues relating to the status of the NRG internal bus.
On the other hand, the alarms on the NRG solid state relay indicate any alarms relating to the SSR or the process.
7.1
LED indications
–
NRG Controller
ON
Green
ON:
US is present at terminals Us+ Us-
OFF:
US is not present at terminals Us+ Us-
Link
(X1, X2)
Green
ON:
The NRG controller is linked to Ethernet
OFF:
The NRG controller has no link to Ethernet
RX/TX
(X1, X2)
Yellow
Flickering: The NRG controller is sending/receiving Ethernet frames
OFF:
The NRG controller is not sending/receiving Ethernet frames
Bus
Yellow
ON:
Transmission of messages from NRG Controller to RG..Ns
OFF:
Internal bus is idle
SF
Red
ON:
Alarm is present on the system
OFF:
No error
Flickering: DCP signal is initiated
BF
Red
ON:
No configuration
OFF:
No error
Flickering
No data exchange
Alarm
Red
2 Flashes:
Configuration error
(Device limit error, Device conflict error, Device unconfigured error,
Device position error)
4 Flash
Supply error
8 Flashes
Communication error
9 Flashes
Internal error
10 Flashes Termination error
7.2
LED indications
–
RG..N
LOAD
Green
ON:
SSR output is ON
OFF:
SSR output is OFF
BUS
Yellow
ON:
Communication ongoing between NRG controller and RG..Ns
OFF:
Communication between NRG controller and RG..Ns is idl
Alarm
Red
100% ON:
SSR over-temperature
1 Flash
Load deviation
2 Flashes
Mains loss
3 Flashes
Load loss / SSR open circuit
4 Flashes
SSR short circuit
5 Flashes
Frequency out of range
6 Flashes
Current out of range
7 Flashes
Voltage out of range
8 Flashes
Communication error (BUS)
9 Flashes
Internal error
