Altivar 61 - error

Communication monitoring
Reaction to a communication fault
In the event of a communication fault (on a monitored channel), the drive reacts as specified in the [1.8 - FAULT MANAGEMENT] (FLt-) menu
([COM. FAULT MANAGEMENT.] (CLL-) submenu) by the following parameters:
• [Modbus fault mgt] (SLL) for integrated Modbus
• [CANopen fault mgt] (COL) for CANopen
• [Network fault mgt] (CLL) for a network card
The Modbus TCP/IP Ethernet card can also trigger an external fault (in the event of an FDR fault or IP address duplication fault), to which
the drive reacts as specified in the [1.8 – FAULT MANAGEMENT] (FLt-) menu ([EXTERNAL FAULT] (EtF-) submenu) by the
[External fault mgt] (EPL) parameter.
The drive can react in 4 possible ways:
1. Drive fault
[Freewheel] (YES):
[Ramp stop] (rMP):
[Fast stop] (FSt):
[DC injection] (dCI):
freewheel stop
stop on ramp
fast stop
DC injection stop
The fault displayed will depend on the source of the communication fault.
• [Modbus fault] (SLF) for integrated Modbus
• [CANopen FAULT] (COF) for CANopen
• [NETWORK FAULT] (CNF) for a network card
• [EXTERNAL FAULT NET.] (EPF2) for Ethernet card FRD and IP faults.
The DSP402 state chart changes to "7 - Fault reaction active" and then to "8 - fault".
2. Reference and command maintained
[Ignore] (nO):
[Spd maint.] (rLS):
fault ignored
The drive maintains the speed at the time the fault occurred, as long as the fault persists and the run command has
not been removed.
There is no drive fault.
If the DSP402 state chart is in "5-Operation enabled", it remains there.
3. Stop without fault
[Per STT] (Stt):
stop according to configuration of [Type of stop] (Stt).
There is no drive fault.
If the DSP402 state chart is in "5-Operation enabled", it changes to "4-Switched on" after stopping.
4. Fallback
[Fallback spd] (LFF): Change to fallback speed, maintained as long as the fault persists and the run command has not been removed.
There is no drive fault.
If the DSP402 state chart is in "5-Operation enabled", it remains there.
The fallback speed can be configured in the [1.8 – FAULT MANAGEMENT] (FLt-) menu using the [Fallback speed] (LFF) parameter.
Caution: The drive will not start up immediately at the fallback speed. If there is a loss of communication, the drive will only run at the fallback
speed if the run command was present when the communication fault occurred.
In the event of a control system being used to ensure switchover to an active safe state if there is a loss of communication: Drives that have
been stopped must always be left in the run state (5 - Operation enabled) with zero reference to ensure that they change to the fallback
speed.
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