January 2012 7.6 Electronic Handwheel 1343
Handwheel
positioning up to
software limit
switch
The optional parameter MP_decToSoftLimit is used to specify a braking ramp
for handwheel-positioning of the axis to the software limit switch. Limit the
maximum axis speed with MP_decToSoftLimit such that no overshoot of the
axis occurs when the software limit switch is reached.
Proceed as follows to determine the value to be set for the
MP_decToSoftLimit parameter:
Record the current speed of the axis v (N act) with the integrated
oscilloscope.
During measurement with the oscilloscope, quickly move the axis to the
software limit switch with the axis handwheel.
The control uses the following formula for limiting the maximum possible
speed on reaching the software limit switch:
Experiment with various values for the parameter MP_decToSoftLimit and
compare the different oscilloscope results with each other.
MP_decToSoftLimit
Brake ramp for handwheel motions to the software limit switch
(MP_swLimitSwitchPos and MP_swLimitSwitchNeg)
Available from NCK software version: 597 110-03.
Format: Numerical value
Input: 0.000 000 000 to max. value [m/s
2
]
For rotary axes, the brake ramp is specified in [1000°/s
2
].
0: Value from MP_maxAcceleration is used
Default: No value, parameter optional
Access: LEVEL3
Reaction: NOTHING
Vmax 2 distance to software limit switch MP_decToSoftLimit⋅⋅=
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