
Chapter 4 -SETTING-UP AND COMMISSIONING
584S Frequency Inverter
4-13
Voltage/Frequency Shape
The
V/F
SHAPE
option enables of one of two voltage/frequency characteristics to be selected
LINEAR
FAN LAW
OUTPUT VOLTS
FREQUENCY
BASE
FREQUENCY
100%
LINEAR
This gives a constant torque characteristic up to the
BASE
FREQUENCY
FAN
LAW
This gives a quadratic torque characteristic up to the
BASE
FREQUENCY
.
This matches the load requirement for fan and pump applications.
Range:
LINEAR
FAN LAW
Default:
LINEAR
Current Limits
This option provides access to a number of current limit parameters.
MOTOR
I
LIMIT
This sets the maximum motoring current for the drive. If the drive output
current exceeds this value then the drive will attempt to reduce the motoring
load by reducing the motor frequency.
Range:
50 to 150%.
Default:
100%.
REGEN
I
LIMIT
This sets the maximum regenerating current for the drive. If the drive output
current exceeds this value then the drive will attempt to reduce the
regenerating load by increasing the motor frequency.
Range:
-50 to -150%.
Default
-100%.
REGEN
LIM
SELECT
This enables or disables the
REGEN I LIMIT
function.
Default:
ENABLED
.
EXT
TORQUE
LIM
This parameter enables or disables the EXTERNAL TORQUE LIMIT
analogue input on terminal 5. When enabled, the drive takes its load limit
setting from terminal 5 rather than from the
MOTOR I LIMIT
parameter. In
this mode, the drive will adjust the motor frequency to control the motor load
rather than motor current.
Default:
DISABLED
.
OP CURRENT CAL
This parameter can be used to scale the drive output current to match the actual
motor current as follows:
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Summary of Contents for 584S
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