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2.
EMERGENCY STOP & MACHINE READY
2.1
Emergency Stop
Emergency stop means that the machine stops instantly and cannot be operated correctly
until the machine becomes machine ready status by additional operation. In case of
emergency stop, the machine becomes status as follows.
- Spindle axes stop instantly and motor power break.
- In case of being vertical axis, brake operates in vertical axis.
- Hydraulic motor power break
- Power break of 3-phase motor except lubrication oil motor.
(Coolant Motor, Oil Mist Collector Motor, Oil Cooler etc.)
- Impossible solenoid operation because of solenoid coil power break.
(In some machine, solenoid coil power doesn't break in emergency stop status.)
- Turret rotating stops instantly and hydraulic pressure interception.
- All of the moving parts in machine, such as chuck, tail stock, Q-setter and Parts
unloader(B) etc., stop its operation.
- Impossible to select operation mode of machine and to edit machining program.
Using the switch in operation panel, it is possible to operate standard coolant in manual.
When the machine becomes emergency stop status, power is supplied to NC correctly and
it is possible to use 100V/220V outlet correctly. There are two cases that the machine
becomes emergency stop status as follows.
- In case of pressing emergency stop switch.
- In case that emergency stop alarm occurs.
(1) In case of pressing Emergency Stop switch
1. In case of air cylinder, when emergency stop switch is pressed, the air cylinder
doesn't stop its operation instantly. Since cylinder move to its maximum operation
range, attention needs to be paid.
2. In case of pressing emergency stop switch, hydraulic motor will stop. But according
to the setting of machine data, hydraulic motor may do its operation.
In case of pressing emergency stop switch shown in left-
side figure, the machine becomes emergency stop status.
Since this switch maintains its pressed status, machine
ready cannot be operated until the status of switch is
released by rotating the switch to the left. Before breaking
main power in order to off the power of machine, be sure that
the machine should become emergency stop status using this
switch.
OPERATION | 21
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