Lenze SL - Manual (Page 44)

44 Lenze 13466147 EDBSM01 v19 EN
4 Commissioning
If the drive is running at a speed below the skip range, and it is given a speed command that is within
the skip range, the drive will accelerate to the start of the skip range (20 Hz in the example) and run
at that speed until the speed command is greater than or equal to the "top" of the skip range. The
drive will then accelerate through the skip range to the new speed. Likewise, if the drive is running
at a speed above the skip range, and it is given a speed command that is within the skip range, the
drive will decelerate to the "top" of the skip range (26 Hz in the example) and run at that speed
until the speed command is less than or equal to the "bottom" of the skip range. The drive will then
decelerate through the skip range to the new speed.
NOTE
PRESET SPEEDS #6 and #7 can still be used as preset speeds even if they are also being
used as skip frequencies.
P39 SPEED SCALING
Parameter P39 scales the display to indicate speed in units other than frequency. This parameter
should be set to the desired display value when the drive output is 60 Hz. The highest setting is
6500, and the highest value that can be displayed is 6553.6. If SPEED SCALING is set to 0.0, the speed
scaling function is disabled and the display will indicate frequency.
Example: A machine produces 175 parts per hour when the motor is running at 60 Hz. Setting SPEED
SCALING to 175 will calibrate the drive's display to read 175 when the motor is running at 60 Hz. This is
a linear function, so at 30 Hz the display would read 87.5 Hz, and at 120 Hz the display would read 350.
NOTE
• If the displayed value will exceed 999, the value is shown in two parts. For example,
if the displayed value is 1800, the display will indicate this by toggling between "1--"
and "800".
• If SPEED SCALING is set such that the maximum displayable value (6553.6) is exceeded,
the display will flash "9999" to indicate that the value is out of range. For example, if
SPEED SCALING is set to 6000, the drive will display 6000 when it is running at 60 Hz.
If the speed is increased past 65.5 Hz (at 65.5 Hz, the scaled value would be 6550), the
display will flash "9999" because a scaled value above 6553.6 cannot be displayed.
P42 ACCEL / DECEL #2
Parameter P42 sets the second acceleration and deceleration rate of the drive, which can be activated
using terminals TB-13A, 13B, or 13E (Parameter 10, 11, or 12).
P44 PASSWORD
P44 allows the PASSWORD to be changed to any number between 000 and 999. Setting PASSWORD
to 000 disables the password function. The factory default password is 225.
P45 SPEED AT MIN SIGNAL
P45 sets the speed at which the drive will run when it receives the minimum speed reference signal
(0 VDC or 4 mA). This is used in conjunction with SPEED AT MAX SIGNAL (Parameter 46) to define the
speed range of the drive when following an analog speed reference signal.