Eurotherm Drives 584S, Product Manual, Page: 74 / 176

Chapter 4 -SETTING-UP AND COMMISSIONING
584S Frequency Inverter 4-9
SETUP PARAMETERS
The
SETUP PARAMETERS
menu is entered in order to change default parameters and in order to make running
performance adjustments. All the parameters are described in the following subparagraphs, although the order of
presentation on the actual MMI may differ.
Caution
If your application requires operation above 120Hz with a special high speed motor then the
LIMIT
FREQUENCY
parameter should be adjusted before any other parameters are changed. This is because
LIMIT FREQUENCY
affects the scaling of all frequency related parameters (
MIN SPEED, MAX
SPEED, BASE FREQUENCY etc). The default value for LIMIT FREQUENCY is 120Hz which
covers the majority of applications for standard induction motors. This parameter is described in
" LIMIT FREQUENCY ".
Note: Users must remember to save parameters after any changes are made. See " PARAMETER
SAVE " later in this chapter.
Base Frequency
The
BASE FREQUENCY
is the frequency at which the inverter produces maximum output voltage. This would be set
at 50Hz or 60Hz for a standard motor. The range and default values are:
Range:
LIMIT FREQUENCY
/16 to
LIMIT FREQUENCY
Default: 50Hz
WARNING!
The inverter output frequency can exceed the
MAX SPEED
parameter setting when using slip compensation feature
or when using the PID output to trim the ramp output. This speed is clamped at 105% of the
MAX SPEED
parameter
Maximum and Minimum Speeds
MAX SPEED
is the motor speed corresponding to maximum setpoint input. The maximum speed range and default
values are:
Range:
MIN SPEED
to
LIMIT FREQUENCY
Default: 50Hz
MIN SPEED
is the motor speed corresponding to zero setpoint input. Range and default values are:
Range: 0Hz to
MAX SPEED
Default: 0Hz
NOTE: The
MAX SPEED
and
MIN SPEED
parameters can affect the scaling of the analogue speed
setpoint inputs (SPEED SETPOINT, + CURRENT LOOP and TRIM). Refer to Chapter 2, Table 2.5.
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