HEIDENHAIN TNC 306 Technical Manual - Manual (Page 158)

4-58
TNC 406/TNC 306 4 Gap control 3/97
Example:
0
0
10
20
30
40
–10
–20
–30
–40
Ugap [V]
F
[mm/min]
Short circuit
0V
Electrode
retracts
Electrode
moves towards
workpiece
Standstill
2.5 V
Freerun
5 V
2.5
–50
–60
50
–70
5 V
1
Range for typical
process run
60
–80
–90
(MP 2080 = 0)
2
3
4
5
6
7
8
9
10
 MP2030.0 = 30 Characteristic kink (characteristic range 2.5 to 5V)
 MP2030.1 = 30 Characteristic kink (characteristic range 0 to 2.5V)
‘ MP2010.0 = 1
Characteristic gradient (characteristic range 2.5 to 5V)
’ MP2010.1 = 1
Characteristic gradient (characteristic range 0 to 2.5V)
“ MP2020.0 = 2
Multiplication factor (characteristic range 2.5 to 5V)
(new slope starting at kink point is the product of MP2020
× MP2010)
” MP2020.1 = 2.4 Multiplication factor (characteristic range 0 to 2.5V)
(new slope starting at kink point is the product of MP2020
× MP2010)
• MP2070 = 20
Feed rate at maximum gap voltage (= scaling)
– MP2131 = 30
Feed rate limited for a new eroding feed rate from MP2132
(MP2132 = 30)
— MP2132 = 0
New eroding feed rate when value from MP2131 is exceeded
˜ MP2133 = 100
Retracting speed during short circuit (signal at X12)