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This is used to control voltage in two
different modes.
A benefit of using this function block is that
it can reduce the possiblity of nuisance
tripping due to fluctuations in stator current.
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SETUP PARAMETERS
5
FUNCTION BLOCKS
6
MOTOR CONTROL
7
VOLTAGE CONTROL
VOLTAGE MODE
MOTOR VOLTS
BASE VOLTS
VOLTAGE CONTROL
NONE
[595]
VOLTAGE MODE
–
** 400.0 V – [122]
MOTOR VOLTS
–
100.00 % – [112]
BASE VOLTS
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VOLTAGE MODE
Range: Enumerated - see below
Set to NONE, no attempt is made to control the PWM modulation depth for variations in dc link
voltage.
Set to FIXED, the Inverter’s output volts are maintained, regardless of variations in the dc link
voltage. The Inverter’s product code sets the default value for demanded maximum output
voltage (see MOTOR VOLTS below).
Set to AUTOMATIC, the voltage is controlled as above, but the output voltage is allowed to
rise smoothly as dc link volts vary. This allows the motor to be overfluxed during deceleration,
thereby increasing braking performance.
Enumerated Value : Voltage Mode
0 : NONE
1 : FIXED
2 : AUTOMATIC
MOTOR VOLTS
Range: 198.0 to 550.0 V
This is the maximum motor output voltage. This parameter is used in conjunction with the
VOLTAGE MODE parameter above when set to FIXED.
BASE VOLTS
Range: 0.00 to 115.47 %
This parameter directly scales the output of the voltage control function block, thus allowing
further scaling of the Inverter output volts if required.
Summary of Contents for 584SV Series
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