N4: Own channel - only 840D sl
9.2 Stroke control
Extended Functions
556 Function Manual, 03/2013, 6FC5397-1BP40-3BA1
9.2.2 High-speed signals
Functionality
High-speed signals are used to synchronize the NC and punching unit. On the one hand,
they are applied via a high-speed output to ensure that the punch stroke is not initiated until
the metal sheet is stationary. On the other, they are applied via a high-speed input to ensure
that the sheet remains stationary while the punch is active.
The high-speed digital inputs and outputs on the control are used to drive the punching unit.
The following signal chart illustrates the signal sequence.
,
$
W
W
W
W
W
F
E
D
(a) Axis motion of the machine as function v(t)
(b) "Stroke initiation" signal
(c) "Stroke active" signal
Figure 9-1 Signal chart
Note
The "Stroke active" signal is high-active for reasons relating to open-circuit monitoring.
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