Delta Electronics MVF2000 Series, Product Manual

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Table 4-66 Over-voltage prevention during deceleration
ID Parameter Min Max Unit Default Description
P0551
Judgment time for
over-voltage
prevention during
deceleration finish
1 65535 100ms 10
P0552
Steady-state error
range of speed
command
1 1000
0.01
rpm
200
P0581
Over-voltage
prevention during
deceleration enable
0 1 0
0-Disable
1-Enable
P0582
Udc upper threshold
of over-voltage
prevention during
deceleration
500 1150 V 1050
P0583
Udc lower threshold
of over-voltage
prevention during
deceleration
500 1150 V 1025
P0584
Torque attenuation
coefficient of
over-voltage
prevention during
deceleration
1 100 % 100

Over-voltage prevention during deceleration is used to prevent overvoltage of DC
busbar in the procedure of speed reduction if deceleration time is set to low.

When over-voltage prevention during deceleration is enabled, if the voltage of DC
busbar raises beyond P0582 setting in the procedure of speed reduction, the process
will pause until the voltage reduces beneath the setting of P0583, and then continue to
execute according to the decay proportion of P0584 to adjust the speed-reduction
parameter.
Table 4-67 Symmetrical bypass
ID Parameter Min Max Unit Default Description
P0028
Maximum number of
bypassed power
cells per phase
0 3 0
P0059
Power cell bypass
mode
0 2 0
0-Symmetrical
bypass
1-Reserved
2-Negative
sequence
compensation
P0392
Maximum
modulation ratio of
symmetrical bypass
1000 1154 0.001 1150