System cycle, 4function description, 7 system cycle – Pilz PSENvip RL D P User Manual
Page 58
4.7
System cycle
4
Function description
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: [email protected]
4-30
4.7
System cycle
4700
System cycle
4-
Funktion_Systemablauf_Muting
This section illustrates the interdependencies of the parameters on the
press brake, PSENvip and safety system during a press stroke. The fol-
lowing parameters are illustrated:
Status: Describes the cycle status. The upward movement of the
press is assumed as a safe movement.
Foot switch: Start/stop press stroke
System-Init: Press brake is at top dead centre
OSSD: Output signal switching devices of the PSENvip
Protected field: Free, interrupted
Mute 1/2: signals whether dynamic muting is activated or deactivat-
ed.
Mute 1/2 are reset to "1" when the protected field is completely ac-
tivated and the advance measuring field is free.
A protected field that has already been partly deactivated can be
completely reactivated by
– side intervention
– the signal System-Init = 1
Dynamic muting:
– reset: advance measuring field touches pinch point on the work-
piece
– End: Tool centre point reaches the 6 mm point
Fig. 4-17:
Definitions
Legend:
TDC top dead centre
6 mm: 6 mm point, end of dynamic muting
PP: Pinch point
BDC bottom dead centre
v = 0 mm/s closing speed at top/bottom dead centre
v > 0 mm/s downward movement
TDC
6 mm
BDC
v = 0
v > 0
v < 0
v = 0
6 mm
KP
Mute 1/2