WEIHONG PM53B - Page 5

Specialized Concentrated Focused
Preface「III」
WARNING
2) Precautions Related to Installation
 Only when this equipment installed in the qualified electricity cabinet can it be used. The
construction of the cabinet must reach IP54 grade of protection;
 Paste sealing strips on the joint of the cabinet to seal all the cracks;
 Cable entry should be sealed while easy-to-open on the spot;
 A fan or heat exchanger should be adopted for the heat dissipation and air convection of the
cabinet;
 If a fan is adopted, air strainer is a must in air inlet or air outlet;
 Dust or cutting fluids may have access to the CNC device via the tiny cracks and tuyere.
Therefore it is necessary to pay attention to the surroundings and air flow direction of the air
vent to make sure that the outflow gas is towards pollution source;
 100 mm space should be preserved between the back of the CNC device and the cabinet wall
for plugging cable connected with the device and the ventilation & heat dissipation in the
cabinet;
 Space between this device and other equipments should also be preserved according to the
requirements;
 The product should be installed firmly and without vibration. During installing, casting,
knocking, striking, or loading on the product is forbidden;
 To reduce electromagnetic interference, power-supply components used should be above AC
or DC 50V and the space between cable and CNC device should be preserved above 100mm;
 It will be better if CNC device is installed at a position facilitating debugging and maintenance.
3) Precautions Related to Wiring
 Only qualified people are allowed to participate in the wiring and checking;
 The CNC device should be grounded reliably and grounding resistance should be less than 4
ohm. Neutral line is absolutely not allowed to replace earth wire. Otherwise, it may result in
malfunction of the device due to the interference;
 Wiring should be firm and steady, or misoperation may occur;
 Voltage values and positive & negative polarity of any connection plug should be in accordance
with specifications set forth in the manual, or it may result in breakdowns such as short circuit
and permanent damage to the device;
 To guard against electric shock or CNC device damage, fingers should keep dry before
plugging or touching switch;
 The connecting wire should not be damaged and squeezed, or the leakage or short circuit may
occur;