A-53867-1817 rev02(1/9)
FANUC Series 16i/18i/21i-TB/MB
FANUC Series 18i-MB5
Safety Function at opening protection door (Safe Spindle Stop function)
1.
Outline
This function achieves safe power off of the spindle axis by the double monitoring
function combining with FANUC Dual Check Safety.
On the present Dual Check Safety, since the safe monitor of a spindle axis was
performed under the "monitor of speed", there was a case where safe speed excess alarm
is generated and a system stopped, when the spindle axis is turned by hand and
rotational speed exceeded the limit.
On the other hand, the new function supervising "power off of a spindle axis" provides
the way to rotate the spindle axis during the door open with no alarm. So it can enhance
the user-friendliness of a machine.
Also, this function can be used with the enabling switch, which enables to drive the
spindle by the safe speed.
SPM
SVM
PSM
AC reactor
Magnetic
Contactor
Spindle
Motor
Servo
Motor
CNC CPU
MONITOR
CPU
Cross
Check
Spindle
Enabling Switch
Protection Door
Cut Off and
Check status
Status of
Protection door
Status of
Enabling Switch
(New Signal)
Status of
Motor
Driver 1
Status of Motor Driver 2 (New signal)
Contact
Driver
Safe
I/O
Safe
I/O
Monitor,
Control of
Monitor,
SPM :
α
i series Spindle Amplifiler Module
SVM :
α
i series Servo Amplifiler Module
PSM :
α
i series Power Supply Module