Group 20: Limits - ABB ACS 400 User Manual

Group 20: Limits

Code Description
2003 MAX CURRENT
Maximum output current.
The maximum output current that the ACS 400 will supply to the motor.
2005 OVERVOLT CTRL
DC overvoltage controller enable.
Fast braking of a high inertia load causes the DC bus voltage to rise to the overvoltage control limit. To
prevent the DC voltage from exceeding the limit, the overvoltage controller automatically decreases the
braking torque by increasing output frequency.
Caution! If a braking chopper and a braking resistor are connected to the ACS 400, this parameter value
must be set to 0 to ensure proper operation of the chopper.
0 =
DISABLE
1 =
ENABLE
2006 UNDERVOLT CTRL
DC undervoltage controller enable.
If the DC bus voltage drops due to loss of input power, the undervoltage controller will decrease the motor
speed in order to keep the DC bus voltage above the lower limit. By decreasing the output frequency, the
inertia of the load will cause regeneration back into the ACS 400, thus keeping the DC bus charged, and
preventing an undervoltage trip. This will increase power loss ride-through on systems with a high inertia,
such as a centrifuge or fan.
0 =
DISABLE
1 = (
ENABLE TIME
Enable with 500 ms time limit for operation.
2 =
ENABLE
Enable without time limit for operation.
2007 MINIMUM FREQ
Operating range minimum output frequency.
Note! Keep
MINIMUM FREQ
2008 MAXIMUM FREQ
Operating range maximum output frequency.
ACS 400 User's Manual
)
≤
MAXIMUM FREQ
.
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