Yueming CMA0604-B-A Product Operation Manual page 34

Safe earthing is strictly required for power supply system of CMA1309-B-A series machine. Power supply of
users must satisfy safety regulations of the local government:
Users are required to consult professional electric equipment installer (electrician), and have the professional
electric equipment installer check and determine if the earthing is reliable.
Attention
If your power supply system is not with an earthing, it is a must for you to have professional electric
equipment installer mount a safety earthing net in the following method:
①
②
①
②
③

It is a must to use 2-4 pieces of 4×35×1500mm angle iron hammered into any wet place surrounding the
house as earthing. Distance between each two angle iron is 1m. And then use a 3×30mm flat plate leads
each angle iron out from earth surface to form a good earthing net.

After completing the earthing net, measure earthing resistance with an apparatus, the standard value is
5 ohm.

After measuring the resistance, connect one end of the RVV2.5mm
of the earthing net, one end is connected to the earthing of the carving machine and earthing hole of
the socket.
3.1.4.8 Removal of fixation block
At-ex-factory, to avoid unexpected impact during transportation, the machine is equipped with fixation block
on XY movement mechanism. During installation, they should be removed. Removal of the fixation block is as
shown in the figure below:
29
Poor grounding will lead to high equipment failure rate, and may lead to other
accidents! Han's Yueming Laser does not assume any responsibility and obligation for
any resulting faults and accidents.
1m
3*30 Flat steel
Ground
4*35*1500mm angle steel
Figure 3-17 Grounding Gridschematic Diagram
1m 1m
2
③
copper core cable to the eduction