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Parameter Reference
D-25
AC30 series Variable Speed Drive
If the instantaneous braking power is greater than the Brake Rated Power parameter then this overload is accumulated. If the overload area (power
excess x time) reaches the level set in the Brake Overrating parameter then the brake switch is automatically disabled. This can then lead to an
overvoltage trip protecting the inverter.
The voltage level at which braking occurs is nominally 764V, but rises linearly to 773V as the overload area rises to the Brake Overrating limit. This
improves the brake energy sharing in a multi-brake common d.c. bus system, which can be effected by variation in the exact braking voltage level in
each inverter.
The
Braking
feature also provides a control signal that is used by the
Slew Rate
limit feature. This causes the setpoint to be temporarily frozen
whenever the brake is operating because the dc link voltage exceeds the internal comparison level. This allows the stop rate to be automatically
tuned to the characteristics of the load, motor, Drive and brake resistor.
Brake Overrating x
Brake Rated Power
Brake Rated Power
0
1s
Time
Overload Area
773V
764V
Nominal Braking
Voltage Level
(Brake Overating-1)
x Brake Rated Power
0
Overload Area (kWs)
Power
Содержание AC30 series
Страница 48: ...4 27 Installation AC30 series Variable Speed Inverter Basic Speed Control Wiring...
Страница 50: ...4 29 Installation AC30 series Variable Speed Inverter Auto Manual Control Wiring...
Страница 52: ...4 31 Installation AC30 series Variable Speed Inverter Raise Lower Trim Wiring...
Страница 54: ...4 33 Installation AC30 series Variable Speed Inverter Presets Speeds Wiring...
Страница 56: ...4 35 Installation AC30 series Variable Speed Inverter PID Control Wiring...
Страница 58: ...4 37 Installation AC30 series Variable Speed Inverter AFE Control Wiring Excludes 7004 04 00 Wiring...
Страница 149: ...Setup Wizard 9 24 AC30 series Variable Speed Inverter MONITOR THE DRIVE Figure 9 15 Monitor the Drive and fine tune...
Страница 150: ...9 25 Setup Wizard AC30 series Variable Speed Inverter Figure 9 16 Charting Drive Parameters...
Страница 233: ...Compliance C 20 AC30 series Variable Speed Inverter Frame H...
Страница 234: ...C 21 Compliance AC30 series Variable Speed Inverter Frame J...
Страница 266: ...D 6 Parameter Reference AC30 series Variable Speed Drive...
Страница 343: ...Parameter Reference D 83 AC30 series Variable Speed Drive Offset Input 100 100 x Scale Value...
Страница 495: ...E Plan Library E 2 AC30 series Variable Speed Inverter Which then brings up the E Plan page...