7. Diagnostics
7. 5. Communication fault
Modbus communication faults are indicated by the red ERR LED on the Modbus card.
In the factory configuration, a communication fault will trigger a resettable [Com. network] (CnF) drive fault and initiate a freewheel stop.
It is possible to change the response of the drive in the event of a Modbus communication fault (see the Configuration section).
-[Com. network] (CnF) drive fault (freewheel stop, stop on ramp, fast stop or DC injection braking stop)
-No drive fault (stop, maintain, fallback)
The Parameters Manual contains a detailed description of how to manage communication faults (see the "Communication monitoring" section).
•Following initialization
•Then, if a communication fault occurs on Modbus, the drive will react according to the configuration (fault, maintain, fallback, etc.).
7. 6. Card fault
The [internal com. link] (ILF) fault appears when the following serious problems occur:
-Hardware fault on the Modbus card
-Dialog fault between the Modbus card and the drive
The response of the drive in the event of an [internal com. link] (ILF) fault cannot be configured, and the drive trips with a freewheel stop. This fault cannot be reset.
Two diagnostic parameters can be used to obtain more detailed information about the origin of the [internal com. link] (ILF) fault:
-[Internal link fault 1] (ILF1) if the fault has occurred on option card no. 1 (installed directly on the drive)
-[Internal link fault 2] (ILF2) if the fault has occurred on option card no. 2 (installed on option card no. 1) The Modbus card can be in position 1 or 2.
The [Internal link fault 1] (ILF1) and [Internal link fault 2] (ILF2) parameters can only be accessed on the graphic display terminal in the [1.10 DIAGNOSTICS]
Value | Description of the values of the [Internal link fault 1] (ILF1) and [Internal link fault 2] (ILF2) parameters |
0 | No fault |
1 | Loss of internal communication with the drive |
|
|
2 | Hardware fault detected |
3 | Error in the EEPROM checksum |
4 | Faulty EEPROM |
|
|
5 | Faulty Flash memory |
6 | Faulty RAM memory |
7 | Faulty NVRAM memory |
|
|
8 | Faulty analog input |
9 | Faulty analog output |
10 | Faulty logic input |
|
|
11 | Faulty logic output |
101 | Unknown card |
102 | Exchange problem on the drive internal bus |
|
|
103 | Time out on the drive internal bus (500 ms) |
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