Yaskawa PC NC - Manual (Page 190)

4 - 28
YASNAC PCNC Operating Manual Chapter 4: Maintenance
4.1.8 PCNC Alarms Not Indicated By Alarm Numbers
(1) Fuse F1 blown on JZNC-JFC 10 card of CPU Rack.
When the 0.3 A F1 Fuse is blown on the JFC 10 card, “3002 Emergency stop” Alarm on CNC
occurs.
In the diagnostic, when the # 3500 bit 2 * ESPS signal is ON, and the “3002 Emergency stop”
alarm still occurs on the PCNC Status bar, check the 0.3 A F1 Fuse on the JFC 10 card.
(2) Fuse F2 blown on JZNC-JFC 10 card of CPU Rack.
When the 5A F2 Fuse is blown on the JFC 10 card, “3001 Servo Alarm and 3002 Emergency
stop” alarms occur. Check the LED D4, just above CN04 Connector of the JFC 10 card of
CPU Rack. If this LED is not lit, then F2 Fuse has blown. Replace the fuse.
(3) When the Servo ON and Shut Down button connections are not connected or are wrongly
connected.
When the Servo ON and Shut Down buttons are not connected to the CN12 Connector, or are
wrongly connected, “3002 Emergency stop and 3001 Servo alarms” is displayed on the
PCNC. Check that the Servo ON and Shut Down buttons are properly connected to the
CN12 Connector.
Note: When the fuse F1 or F2 are blown, replace with the same type of fuse.
4.1.9 Touch Screen Maintenance
It requires periodic cleaning in following conditions.
1. Whenever some chips fall on DISPLAY Unit.
2. Whenever some coolant falls.
3. Whenever some dusts are accumulated on the screen.
4. Whenever greasy, any kind of mists, or dusts appear on the screen.
5. If the display is not clear or clean.
Clean the touch screen by following method.
Go to Utilities, PC Settings, Touch “ Touch screen cleaning “ Icon. We will get blank display
of screen. It makes easy to view the dust portions on the screen and makes easy to clean the
touch screen.