Operation When An Alarm Occurs - Mitsubishi Electric FR-A5NP Instruction Manual

3.6 Operation When an Alarm Occurs.

The following table shows the behavior of the inverter and network when
an alarm occurs:
Fault Type
Inverter Operation Stop
Inverter (*2)
Network Comm.
Inverter Operation Stop
PROFIBUS
Comm.
Network Comm.
*1 Depends on the type of communication fault.
*2 For examples, E.OP3, E.OC1.
PROFIBUS-DP communication routines should check the "
acknowledge bits ( PKE-AK) returned by slave device to verify
successful transmission of the command and acceptance by
slave device. See page 51 for details.
For your safety, the output frequency of the inverter should
always be monitored via Profibus. The actual frequency of the
inverter should match the frequency setting issued by the
master. If the output frequency of the inverter is less than the
frequency (RFR) set by the master, a STOP command has been
issued.
Item Net
Continue
Continue (*1)
CAUTION
13
OPERATION
Ext
Stop Stop
Continue Continue
Continue Continue
Continue (*1) Continue (*1)
PU