Yaskawa PC NC - Manual (Page 29)

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YASNAC PCNC Operating Manual Chapter 2: Basic Operation of YASNAC PCNC
2.2.1 Inspection of the NC Unit
In this subsection, the items to be inspected before turning ON the power are indicated for the
standard PCNC box supplied by Yaskawa. For the machine tool’s control box, refer to the
machine tool manuals.
(1) Inspecting the Machine Cabinet Doors
Make sure that the doors are securely closed before turning the power ON.
The PCNC CPU rack is not protected against oil mists or other airborne foreign matter.
The door of the machine cabinet doors must always be kept closed before powering ON.
CAUTION!
• To prevent personnel other than those involved in maintenance and inspection work from
turning the power ON while maintenance and inspection is in progress, place signs stating
“DO NOT TURN THE POWER ON” or words to that effect at the primary power
supplies of related control panels and other relevant locations.
Failure to observe this caution could lead to electric shock.
• Electronic devices such as CMOS ICs are used on the control boards. If you touch the IC’s
with your bare fingers, static electrical charge in your body could destroy these IC’s, care must
be taken when handling these devices. Before handling these devices for maintenance purposes,
first discharge the static electricity in your body by touching a grounded metal device.
Failure to observe this caution could lead to personal injury and product failure.
• Do not install or remove boards, wiring, connectors, etc., while the power is ON.
Failure to observe this caution could lead to electric shock, product failure, and malfunction.
• Do not let foreign matter such as electrical wire scrap enter the unit.
Failure to observe this caution could result in fire, product failure or malfunction.
• Be sure to check the following points after completing maintenance and inspection work:
• Check that all fastening bolts are tightened.
• Check that no tools or other objects have been left inside the control panel.
• Check that the control panel door is closed properly.
Failure to carry out these checks could lead to electric shock, injuries, fire, and malfunction.
• Never attempt to disassemble the NC unit modify units/devices inside the PCNC unit.
Failure to observe this caution could lead to fire, product failure and malfunction.
• Do not change the set values of the devices, variable resistors, etc., in the control panel.
Failure to observe this caution could lead to fire, product failure, and malfunction.