ADT-CNC46XX 系列维护手册
- 78 -
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 display 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 in certain
degree. To ensure system stability, please take the following measures to install and connect the system:
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 switching power supply
should be connected to a filter to improve the anti-interference of CNC (as in Fig.1-4);
⑵ To supply power to the system through isolation transformer, the machine tool must be grounded, CNC
and drive must be connected to separate earth wire.
To suppress interference
Connect RC circuit (0.01μF, 100~200Ω, as in Fig. 1-5) to both sides of AC coil in parallel. RC circuit
should be installed close to inductive load; connect freewheeling diode reversely on both sides of DC coil in
parallel (as in Fig.1-6); connect surge absorber to the winding of AC motor in parallel (as in Fig. 1-7).
To reduce the interference between CNC signal cables and strong current cables, the wiring shall follow
the principles below:
To Next Page
Loading...
Need help?
General
