6 – 198 HEIDENHAIN Technical Manual TNC 426, TNC 430
7
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7 Decrease the value entered in MP236x until the braking time is as short as
possible and the mechanics of the machine are not stressed too much.
MP2191 Braking the first spindle in an emergency stop with
monitoring of the maximum braking current
Input: 0: Braking with monitoring of the maximum braking current
1: Braking without monitoring of the maximum braking current
MP2360.0-8 Time constant for braking axes 1 to 8 or the second spindle
in an emergency stop
Input: 0.01 to 5.00 [s]
0: Function inactive
MP2361 Time constant for braking the first spindle in an emergency
stop
Input: 0.01 to 5.00 [s]
0: Function inactive
MP2590.0-8 Braking ramp for axes 1 to 8 or the second spindle in an
emergency stop
Input: 0.1 to 999.9 [rpm/ms]
0: Function inactive
MP2591 Braking ramp for the first spindle in an emergency stop
Input: 0.1 to 999.9 [rpm/ms]
0: Function inactive
Note
Since the mass of the tool and the temperature of the braking resistor
affect the braking power, MP236x should be determined with the heaviest
tool and a “hot” braking resistor. To heat up the braking resistor, accelerate
and decelerate the spindle several times at a quick pace.
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