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vacon 500x parameters
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523 Id Percent
Default: Read-only
Range: 0 - 200%
Level 2 (SVC)
This parameter shows the Flux producing current (as a percentage of motor rated current) that is being
applied to the drive. The parameter is only visible if the drive is in a vector-capable mode; otherwise, it is
hidden.
524 Iq Percent
Default: Read-only
Range: 0 - 200%
Level 2 (SVC)
This parameter shows the Torque producing current (as a percentage of motor rated current) that is being
applied to the drive. The parameter is only visible if the drive is in a vector-capable mode; otherwise, it is
hidden.
525 Power Fail Config
Default: (5) CTS No Msg
Range: n/a
Level 2 (SVC)
Parameter Value
Description
(0) Coast Stop
The drive will coast to a stop when an undervoltage condition (power-down)
is detected. In this mode, however, the drive will generate an undervoltage fault, which
will be registered in the fault log.
(1) Ramp Down
With this setting, if power is lost, the drive ramps the motor down at a
decel rate of Decel 1. When the drive is fully ramped down, the drive will generate an
undervoltage fault. If power is restored, the drive will continue to ramp to a stop and
will fault.
(2) Quick Ramp
Same as Ramp Down, except the shorter ramp time (Decel 1 or Decel 2) will be used.
(3) Controlled
With this setting, if power is lost, the drive decelerates the motor,
trying to regulate the bus voltage to the undervoltage level. If power is restored, the
drive accelerates to the command frequency without faulting. If the drive reaches the
stopped condition, it will generate an undervoltage fault.
(4) ContrNoMsg
Same as Controlled, but without generating an undervoltage fault.
(5) CTS No Msg
The drive will coast to a stop when an undervoltage condition (power-down)
is detected.
526 UV Ride-Thru En
Default: (1) w/ LVT
Range: n/a
Level 2 (SVC)
This parameter allows the function to disable either (a) undervoltage ride-through or (b) continuous Line
Voltage Tracking (LVT) that produces dynamic Undervoltage Ride-Thru Thresholds. The following data
values may be assigned to this parameter:
Parameter Value
Description
(0) Disabled
This turns off the Undervoltage Ride-Thru function.
(1) w/ LVT This enables the standard Ride-Thru algorithm in the V/Hz modes and allows the
choice of algorithm in the Linear Auto and Vector modes.
(2) w/o LVT
This option operates in the same way as “w/ LVT” except that the Line Voltage
Tracker function of the Undervoltage Ride-Thru is not active. The Line Voltage will be
estimated on powering up the drive.
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