TB Wood's X4, Руководство пользователя, Страница: 77 / 98

X4 AC Drive User’s Manual Chapter 7: X4 Parameters
1428D-0607 - 69 -
© 2007 TB Wood’s All Rights Reserved
802 Start Options Default: LS Lockout
Range: n/a
Level 2
The Start Options parameter configures the Line Start Lockout functionality of the drive. All data values ending with “2”
allow you to press the Enter key to store the customer speed reference value on the keypad. You must press and hold
the Enter key for two seconds to save the speed command. The following data values may be assigned:
Data Value Description
LS Lockout (Line Start Lockout). If maintained contact run operators are used, they must be opened and then
re-closed for the drive to start after AC power is applied.
AutoStart When AC power is applied, if a Run command is present through the terminal strip, the drive will
start.
LSL w/FLY This setting has both LS Lockout and Catch on the Fly enabled at the same time.
Auto w/FLY This setting has both Auto-Start and Catch on the Fly enabled at the same time.
LS Lockout2 (Line Start Lockout). If maintained contact run operators are used, they must be opened and then
re-closed for the drive to start after AC power is applied.
AutoStart2 When AC power is applied, if a Run command is present through the terminal strip, the drive will
start.
LSL w/FLY 2 This setting has both LS Lockout and Catch on the Fly enabled at the same time.
Auto w/FLY2 This setting has both Auto-Start and Catch on the Fly enabled at the same time.
803 PWM Frequency Default: 3.0 kHz
Range: 0.6-16.0 kHz
Level 2
The PWM Carrier Frequency parameter sets the carrier frequency of the Pulse-Width Modulation (PWM) waveform
supplied to the motor. Low carrier frequencies provide better low-end torque, but produce some audible noise from the
motor. Higher carrier frequencies produce less audible noise, but cause more heating in the drive and motor.
804 Display Mode Default: Std Disply
Range: n/a
Level 2
The Display Mode parameter determines how the reference or output of the drive will be displayed to the user. If User
Units is selected, parameter 805 allows you to customize the 3 unit values on the display. The following data values
may be assigned to this parameter:
Parameter Value Description
Std Disply Standard commanded frequency
Out Freq Output frequency actually sent to the motor
Stator Freq Frequency of the stator
User Units Custom units display based on values in parameters 805, 806, and 807
RPM Units Custom speed display with RPM as units
GPM Units Custom speed display with GPM as units
FPM Units Custom speed display with FPM as units
MPM Units Custom speed display with MPM as units
PSI Units Custom speed display with PSI as units
Degrees C Custom display with degrees C
Degrees F Custom display with degrees F
Time hrs Custom display time in hours of operation
Time min Custom display time in minutes of operation
Time sec Custom display time in seconds of operation
Time sec Custom display time in seconds of operation
Fbk RPM Display is scaled to read in RPM based on the PI feedback input to an analog input
Fbk PSI Display is scaled to read in PSI based on the PI feedback input to an analog input
Fbk GPM Display is scaled to read in GPM based on the PI feedback input to an analog input
Fbk User Display is scaled to read in User units (parameter 805) based on PI feedback input to an analog input
When using any of the Time functions, these refer to “Retention Time.” Retention time is an inverse function: as
speed goes up, time goes down, and vice versa. It is typically used in oven-type applications. The value set in
parameter 809 (Display Scale) references the time of operation when running at Max. Frequency. For instance, if
parameter 302 (Max. Frequency) is set for 60 Hz, 804 (Display Mode) is set for Time min, and 809 (Display
Scale) is set for 600, the scales of the display will read 60.0 min at maximum speed and increase in time (in
minutes) up to the maximum scale of 6553.5 at minimum frequency.
Table 7-2: Description of X4 Parameters (Page 20 of 26)