Delta ASDA-A3 Series User Manual page 3

Safety Precautions
The ASDA-A3 is a high-resolution open type servo drive. It should be installed in a shielded control box
during operation. This product uses precise feedback control and a digital signal processor (DSP) with
high-speed calculation functions to control the current output generated by IGBT to operate three-phase
permanent magnet synchronous motors (PMSM) and to achieve precise positioning.
The ASDA-A3 series are used in industrial applications and should be installed in the control box. Servo
drives, wires, and motors should all be installed in an environment which complies with the minimum
requirement of UL50 Type 1.
Pay special attention to the following safety precautions at all times during inspection, installation, wiring,
operation, maintenance, and examination of the servo drive.
The symbols of "DANGER", "WARNING", and "STOP" indicate:
Danger. May cause severe or fatal injuries to personnel if the instructions are not
followed.
Warning. May cause moderate injury to personnel, or lead to severe damage or even
malfunction of the product if the instructions are not followed.
Absolutely prohibited activities. May cause serious damage or even malfunction of the
product if the instructions are not followed.
Inspection
Please follow the instructions when using the A3 servo drive and servo motor, or it may cause
fire or malfunction.
Installation
Do not expose the product to an environment containing vapor, corrosive gas, inflammable gas,
or other foreign matter to reduce the risk of electric shock or fire.
Wiring
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Connect the ground terminals to class-3 ground system. Ground resistance should not
exceed 100 Ω. Improper grounding may result in electric shock or fire.
Do not connect the three-phase source to the motor output terminals U, V, and W, or it may
cause personnel injury or fire.
Tighten the screws of the power and motor output terminals, or it may cause fire.
When wiring, refer to the description of wire selection in Chapter 3 to prevent any danger.