
3. PRESSING FUNCTION
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When the press start lock (PFL) signal is 0 in the block for punching,
setting the PFW signal to 1 inhibits the press start (PF) signal from going
to 1. The PFW signal can be used when an attempt is made to apply an
interlock to the press start operation according to the mechanical
conditions. However, the PFW signal is ineffective if the PF signal
already goes to 1.
Both the PFWB signal and the PFW are provided. The PFWB signal is
read directly from the machine by the CNC, not via the PMC. The use
of the PFWB is the same as that of the PFW signal. The PFWB signal
is made effective by parameter PWB (No. 16002#5).
CAUTION
These signals are ineffective for continuous manual
pressing.
The press start (PF) signal goes to 1 and the time set in parameter 16037
elapses, then the PFB signal goes to 1. The press stop (*PE) signal goes
to 0 and the time set in parameter 16030 elapses, then the PFB signal goes
to 0. After that, the time set in parameter 16037 or 16038 elapses, then
the PF signal goes to 0.
The PFB signal is used, for example, for the following. The PF signal
controls on and off of the brake for the press while the PFB signal controls
on and off of the clutch for the press.
Time set in parameter
16037
PF
PFB
*PE
Time set in parameter
16030
Time set in parameter
16037 or 16038
CAUTION
1 When the PFB signal is not used, always set parameters
16037 and 16038 to 0.
2 When the setting in parameter PF9 (16002#6) is 1, the time
set in parameter 16038 is used as the time required for the
process from setting the PFB to 0 to setting the PF signal to
0.
3.5.6
Press Start Waiting
Signal (Input)
PFW <G230#1> and
Press Start Waiting
Signal B (Input)
PFWB <X1004#4>
3.5.7
Press Start Signal B
(Output)
PFB <Y1004#3>