description of parameters
vacon
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2.8 PROTECTIONS
I/O Faults parameters (M2 -> G2.8.1)
2.8.1
Response to external fault
0 = No response
1 = Warning
2 = Fault, stop mode after fault according to
3 = Fault, stop mode after fault always by coasting
A warning or a fault action and message is generated from the external fault signal
in the programmable digital inputs. The information can also be programmed into relay
outputs.
2.8.2
Response to undervoltage fault
1 = Warning
2 = Fault, stop mode after fault according to
3 = Fault, stop mode after fault always by coasting
For the undervoltage limits see Vacon NXL User’s Manual. Table 4-3.
Note: This protection can not be inactivated.
2.8.3
Output phase supervision
0 = No response
1 = Warning
2 = Fault, stop mode after fault according to
3 = Fault, stop mode after fault always by coasting
Output phase supervision of the motor ensures that the motor phases have an
approximately equal current.
2.8.4 Earth
fault
protection
0 = No response
1 = Warning
2 = Fault, stop mode after fault according to
3 = Fault, stop mode after fault always by coasting
Earth fault protection ensures that the sum of the motor phase currents is zero. The
overcurrent protection is always working and protects the frequency converter from
earth faults with high currents.
