287
PARAMETERS
June 1999
96-8000
Parameter 180 SLIP GAIN
This name is used when a Vector Drive is installed. The slip rate calculated depends on two
other variables: speed and current.
Slip rate = slip gain x (speed/max speed) x (current/max current)
The slip gain value is the value that slip rate would assume at maximum speed, and maximum
current (16.384=1 Hz). If a Vector Drive is not installed, this parameter is called: C AXIS
RATIO (STEPS/UNIT) and is not used.
Parameter 181 MIN SLIP
This name is used when a Vector Drive is installed. The minimum value allowed from the slip
rate. From the equation:
Slip rate = slip gain x (speed/max speed) x (current/max current)
it can be seen that at a zero speed, the slip rate wouls become zero. Therefore a minimum
value for slip rate is required. (16.384 =1Hz). If a Vector Drive is not installed, this parameter is
called: C AXIS MAX TRAVEL (STEPS) and is not used.
Parameter 182 C ACCELERATION
This parameter is not used unless a Vector Drive is installed. See Parameter 7 for description.
If a Vector Drive is installed and the name of the Parameter is ACCELERATION. The value is
the units of encoder steps / s2 at the motor.
Parameter 183 C MAX FREQ
This parameter is not used unless a Vector Drive is installed.The frequency at which the motor
will be run when maximum spindle RPM is commanded. Units: 0.01 Hz (two implied decimal
places). If a Vector Drive is not installed, this parameter is called C axis MAX SPEED and is
not used.
Parameter 184 C MAX ERROR
The maximum allowable error (in Hz) between commanded spindle speed and actual speed. If
set to zero, it will default to 1/4 of Parameter 183.
Parameter 185 C FUSE LEVEL
See Parameter 10 for description.
Parameter 186 C DECELERATION
This parameter is used when a Vector Drive is installed. Maximum deceleration of axis in
encoder steps per second per second. If a vector Drive is not installed, this parameter is called
C axis BACK EMF, and is not used.
Parameter 187 C HIGH GEAR STEPS/REV
This parameter is used when a Vector Drive is installed. The value is the number of encoder
steps per revolution of the motor when the transmission is in high gear. If the machine does
not have a transmission, this is simply the number of encoder steps per revolution of the
motor. If a Vector Drive is not installed, this parameter is called C axis STPS / REVOLUTION
and is not used.
Parameter 188 C ORIENT GAIN
This parameter is used if a Vector Drive is installed. The value is the proportional gain used in
the position control loop when performing a spindle orientation. If a Vector Drive is not installed,
this parameter is called C axis BACKLASH, and is not used.
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