
11. OPTION RELATED TO SPINDLE
B–65162E/03
518
(2) When the Spindle Switching Control Works by Confirming Only the Power-line Status Check Signal (MCFNA)
For parameter No. 4014#2=0 (FS16)
t
1
MAIN (=0)
ON (=1)
MAIN SPINDLE ³ SUB SPINDLE ³ MAIN SPINDLE
Spindle forward rotation command
(SFRA) or Spindle reverse rotation
command (SRVA)
PMC ³ CNC
Spindle motor speed
Speed zero signal (SSTA)
CNC ³ PMC
Switching request signal (SPSLA)
PMC ³ CNC
Power-line switching signal (CHPA)
CNC ³ PMC
Main side electromagnetic contactor
(MCC2)
Sub side electromagnetic contactor
(MCC1)
Power-line status check signal
(MCFNA)
PMC ³ CNC
Switching completion signal
(CFINA)
CNC ³ PMC
ON (=1)
ON (=1)
ON (=1)
OFF (=0)
OFF (=0)
Stop
OFF (=0)
OFF (=0) OFF (=0)
ON (=1)
MAIN (=0)
MAIN (=0)
MAIN (=0)
MAIN (=0)
SUB (=1)
MAIN (=0)
OPEN (=0)
SUB (=1)
CLOSED (=1)
CLOSED
OPEN
CLOSED
OPEN
OPEN (=0)
CLOSED
SUB (=1)
OPEN
t
1
G
NOTE
1 Because there are electromagnetic contactor operation delays etc. when checking
electromagnetic contactor MCC1, MCC2 selection conditions in electromagnetic contactor
MCC1 (see PMC and switching unit contact details) only, auxiliary contacts make sure that
there is a minimum time lag of 50 msec between operating the MCC1, MCC2 switch and
changing the power cable condition verification signal (MCFN) with the power cable switching
signal (CHP).
2 If the power-line status signal (MCFNA) doesnot change within 1 second after the switching
request signal (SPSLA) is changed, the alarm occurs.