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Installation manual
CNC 8055
CNC 8055i
6.
MACHINE PARAMETERS
SOFT: V02.2X
Spindle parameters
INPOTIME (P20)
Indicates the time period that the spindle must remain in the "IN POSITION" zone in order to consider
it to be in position.
This prevents the CNC from considering the spindle to be in position and executing the next block
on those machines where the spindle could just overshoot the "IN POSITION" zone.
MAXFLWE1 (P21)
Indicates the maximum following error allowed for the spindle when moving in closed loop (M19).
MAXFLWE2 (P22)
Indicates the maximum following error allowed for the spindle when stopped in closed loop (M19).
PROGAIN (P23)
The CNC takes this parameter into account when operating in closed loop (M19).
Indicates the value of the proportional gain. Its value represents the analog command in millivolts
corresponding to a following error of 1 degree.
This value is taken for the first spindle gear and the CNC calculates the values for the rest of the
gears.
DERGAIN (P24)
The CNC takes this parameter into account when operating in closed loop (M19).
Indicates the value of the derivative gain. Its value represents the analog command (in millivolts)
corresponding to a change in following error of 1mm (0.03937 inches) in 10 milliseconds.
This velocity command will be added to the one calculated for the proportional gain.
Possible values
Integers between 0 and 65535 ms.
Default value: 0
Possible values
Between 0 and 99999.9999 degrees.
Default value: 30 degrees.
Possible values
Between 0 and 99999.9999 degrees.
Default value: 0.1 degrees.
Possible values
Integers between 0 and 65535 mV/degree.
Default value: 1000 mV/degree.
Example:
spindle parameter MAXGEAR1 (P2) = 500 rev/min. The desired speed for a 1 degree of following error is
S = 1000°/min (2.778 rev/rpm).
Command from the drive: 9.5V for 500 rpm
Velocity command corresponding to S = 1000 º/min. (2.778 rpm)
Velocity command = (9.5/500) x 2,778 = 52.778 mV
Therefore "PROGAIN" = 53
Velocity command (mV)
= Following error (degrees) x PROGAIN
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