Interlock - Okuma VTM-200 Operation & Maintenance Manual

ATC Magazine Door Interlock
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The ATC magazine door incorporates a door lock mechanism and an interlock switch.
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With this mechanism, this magazine door is always locked while the manual interrupt switch is
OFF on the ATC magazine operation panel. This means that the door can be opened by turning
the manual interrupt switch to ON.
2-6.

Interlock

CAUTION
This machine is equipped with the following interlock functions as standard specifica-
tions. These functions are important for safe operation of the machine. Thoroughly under-
stand the explanations below before operating the machine.
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Maximum spindle speed interlock function
The spindle speed is limited by the max. spindle speed (set by G50 command) and the
allowable chuck rotation speed. The spindle speed is limited to whichever is lower.
Without setting of the max. spindle speed, the spindle cannot be rotated by the pro-
gram. For details regarding speed setting method and set values, refer to the OSP
Operation Manual separately issued.
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Door interlock E function
Spindle or turret rotation with the door open is very dangerous. This function restricts
the machine operations when the door is open.
a) Max spindle speed: 9 min
b) Max. feedrate: 2 m/min (7 fpm)
c) The turret can be indexed only when it is indexed station by station in manual mode
(the other mode is not allowed). For detailed conditions, refer to the Safe Operation
Function Manual separately issued.
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Safety door switch
This is the function for preventing the operator from opening the front door acciden-
tally.
While the machine is in operation, the safety door switch provided at door upper part
operates to lock the door.
Be sure to check that the machine has stopped before opening the door. No that the
attempt to forcibly open the locked door may damage the switch.
The operator door can be opened when the machine is in the state of emergency stop.
However, when the power is turned off or interrupted by power failure, the door cannot
be opened. In such a case, release the door lock by the following procedure:
a) The door lock switchs are provided on left top and right top of the operator door.
(See the figure below.)
b) Remove the cap from the door lock release key insertion slot, and insert the release
key into the slot.
c) Turn the release key to UNLOCK position to release the lock.
d) Open the door.
- When restarting the machine, turn the release key from UNLOCK to LOCK.
- The machine does not operate in the unlock state even if the door is closed.
- The release key shall be always kept in the custody of the person in charge.
SECTION 3 OPERATION (OF CNC LATHE)
-1
for lathe spindle, 50 min
-1
for milling spindle
5699-E P-45