Bedford B550-2001, Инструкция по установке и быстрому запуску

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5
5-9
Pr.25
Over–Voltage Stall Prevention
Settings 115V/230V series 330-450Vdc Factory Setting: 390
460V series 660-900Vdc Factory Setting: 780
575V series 825-1025Vdc Factory Setting: 975
00 disable
During deceleration, the DC bus voltage may exceed its maximum allowable value due to
motor regeneration. When this function is enabled, the AC drive will stop decelerating,
and maintain a constant output frequency to prevent from over-voltage tripping. Drive will
resume deceleration when the voltage drops below the setting for Pr.25.
Note: In applications where inertia is low, over-voltage during deceleration would not occur.
When inertia is high, the AC drive will automatically extend the deceleration period. If a
faster stop is needed, then a dynamic braking resistor should be used.
DC bus voltage
time
Over-voltage
detection
level
output
Freq.
time
Over-voltage Stall Prevention
Pr.26 Over-Current Stall Prevention during Acceleration Factory Setting: 150%
Settings 20 to 200% Unit: 1%
00 disable
A setting of 100% is equal to the Rated Output Current of the drive.
Under certain conditions, the AC drive output current may increase abruptly, and exceed
the value specified by Pr.26. This is commonly caused by rapid acceleration or excessive
load on the motor. When this function is enabled, the AC drive will stop accelerating and
maintain a constant output frequency. Drive will resume accelerating only after the
current drops below the setting for Pr.26.
Pr.27
Over-Current Stall Prevention during Operation Factory Setting: 150%
Settings 20 to 200% Unit: 1%
00: disable
B550
Series
sensorless vector frequency drive