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8. Safeguards
8-1. List of safeguards
The errors other than bb and bb2 will be recorded in the monitor Un007: Error history.
*1
A method for detecting the overload condition varies according to the set constants.
For details, see the explanation of user-defined constants.
*2
The detection level is the same as the instantaneous overcurrent level.
Free-run stop
Error reset input
The following
conditions must
be satisfied:
•
Eliminating
causes of the
detected error
• Operation
command:
OFF
Error name
Display
Details
Operation
when error is
detected
Recovery
method
The output current value exceeded the following
reference values:
0.1 kW: 4.48 A 0.2 kW: 6.51 A
0.4 kW: 13.84 A 0.75 kW: 23.30 A
Overload
Detected overload condition of the output
current. *1
Main circuit
overvoltage
The voltage of the main circuit DC bus
exceeded 390 V continuously for the duration of
500 ms or more.
The voltage of the main circuit DC bus
exceeded 407 V continuously for the duration of
2 ms or more.
Instantaneous
overcurrent
The output current value exceeded about 450%
of the motor rated current value.
Main circuit
voltage
reduction
When the operation command was ON, the
voltage of the main circuit DC bus dropped
down by 212 V continuously for the duration of
15 ms or more.
When the operation command was ON, the
voltage of the main circuit DC bus dropped
down by 127 V continuously for the duration of
2ms or more.
Overspeed
The rotational speed of the motor exceeded
3600 r/min or more continuously for the duration
of 1 second.
Regeneration
error
Regeneration circuit error or regeneration
transistor remained in ON state continuously for
the duration of 10 seconds or more.
Driver
overheating
The temperature of the driver heat dissipation
FIN exceeds about 95
℃
.
Pole sensor
error
Detected an undefined pattern of the pole
sensor (U:V:W = 0:0:0 or 1:1:1).
Power
disconnection
Detected disconnection of the output cable.
Dynamic brake
failure
Detected abnormal current during dynamic
brake processing. *2
