Adtech 4 Series, Maintenance Manual

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ADTECH 4 series CNC System (maintainance Manual)
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12.1.3. Installation precautions
Installation condition for electric cabinet
⑴
The cabinet must be able to effectively prevent dust, coolant and organic solution entering;
⑵
When design electric cabinet, the distance between rear cover and case should be at least 20CM;
considering the temperature rises in the cabinet, the temperature difference between interior and exterior of the
cabinet shouldn‘t exceed 10
℃
;
⑶
The cabinet should be installed with fan to ensure interior ventilation;
⑷
The panel should be installed at the position can‘t be sprayed by the coolant;
⑸
When design electric cabinet, the external electrical interference should be reduced to lowest to
prevent interfering with the system;
To prevent interference
The system is designed with anti-interference measures such as shielding space electromagnetic radiation,
absorbing impact current and filtering power clutter, which can prevent interference with the system. To ensure
system stability, please take the following measures
⑴
CNC must be kept away from the equipment with interference (e.g. inverter, AC contactor,
electrostatic generator, high voltage generator, and sub-unit of power lines), and the SMPS should be
connected to a filter to improve the anti-interference of controller(as in Fig. 1-7)
⑵
the supply power of controller should from isolation transformer, and the machine must be ground,
controller and drive must be connected to separate ground point .
The measures of anti-interference
Connect RC circuit (0.01μF, 100~200Ω, as in Fig. 1-5) to both sides of AC contactor coil,RC circuit
should be installed close to inductive load; connect freewheeling diode reversely on both sides of DC coil (as
in Fig.1-6); connect surge absorber to the winding of AC motor (as in Fig. 1-7).