Phase Alignment Of Reference Spindle And G/B Spindle - Mitsubishi Electric M800VW Series Programming Manual

M800V/M80V Series PLC Programming Manual (2/2)
13 Spindle Control
13.12 Guide Bushing Spindle Synchronization

13.12.2.2 Phase Alignment of Reference Spindle and G/B Spindle

In order to insert a square bar, it is necessary to align the phases of the reference spindle and the G/B spindle. For the phase
alignment, it is necessary to save the phase gap between the reference spindle and the G/B spindle when inserting the bar for
the first time. By doing so, inserting the bar becomes easy by turning ON the "G/B spindle synchronization: phase alignment"
(GBPHS) signal before inserting the bar to align the relative position of the reference spindle and the G/B spindle that was
saved the first time the bar was inserted.
The phase gap that is once saved is available until another phase is saved again.
Saving phase gap between reference spindle and G/B spindle
 Insert a square bar in the G/B reference spindle and the G/B spindle.
 Turn the "G/B spindle synchronization valid" (GBON) signal ON to rotate the reference spindle.
 After the "Z phase passed" (SZPH) signal turns ON, stop the reference spindle. Do not turn OFF the "G/B spindle synchro-
nization valid" (GBON) signal at this point.
 After the reference spindle and the G/B spindle stop, turn ON the "G/B spindle synchronization: phase memory" (GBPHM)
signal to save the phase gap (relative position) between the reference spindle and the G/B spindle. (Check the stop state of
the reference spindle and the G/B spindle referring to the Zero speed signal.)
 After turning OFF the "G/B spindle synchronization: phase memory" (GBPHM) signal, turn OFF the "G/B spindle synchroni-
zation valid" (GBON) signal.
Phase alignment of reference spindle and G/B spindle
 After turning ON the "G/B spindle synchronization valid" (GBON) signal, rotate the reference spindle at 300r/min or below.
 After the reference spindle enters the steady state, turn ON the "G/B spindle synchronization: phase alignment" (GBPHS)
signal.
(Check the steady state referring to the "Spindle up-to-speed" (USO) signal.)
 A phase alignment starts targeting the phase gap (relative position) between the reference spindle and the G/B spindle that
has been saved.
 When the phase alignment is completed, the "G/B spindle synchronization: phase alignment complete" (GBPHF) signal
turns ON.
 Turn OFF the "G/B spindle synchronization: phase alignment" (GBPHS) signal, and insert the square bar.
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