Digital Brushless AC Servo Drive system - Ref. 1809 BCSD-5/116
Safety Precautions
• Do not connect the servomotor directly to the local electrical network.
Failure to observe this may result in damage to servomotor.
• Do not plug or unplug connectors from servodrive after power is on.
Failure to observe this may result in damage to servodrive and servomotor.
• Note that residual voltage still remains in the servodrive even after the power is turned off.
Please be noted that even after the power is turned off, residual voltage still remains in the capacitor
inside the servodrive. If inspection is to be performed after the power is turned off, always wait at least
5 minutes to avoid the risk of an electrical shock.
• Keep servodrives and other devices separated by at least 10 mm.
The servodrive generates heat. Install the servodrive so that it can radiate heat freely. When installing
servodrives with other devices in a control panel, provide at least 10 mm space between them and
50 mm space above and below them. Please install servodrives in an environment free from conden-
sation, vibration and shock.
• Perform noise reduction and grounding properly.
Please comply with the following instructions strictly to avoid the noisy generated by signal lines.
1. Separate high-voltage cables from low-voltage cables.
2. Use cables as short as possible.
3. Single point grounding is required for the servomotor and servodrive (grounding resistance 100
or below).
4. Never use a line filter for the power supply in the circuit.
• Conduct a voltage resistance test for the servodrive under the following conditions:
1. Input voltage: AC 1500 Vrms, 1 minute
2. Braking current: 100 mA
3. Frequency: 50/60 Hz
4. Voltage applied point: Between L1, L2, L3 terminals and frame ground.
• Use a fast-response type ground-fault interrupter.
For a ground-fault interrupter, always use a fast-response type or one designed for PWM inverters.
Do not use a time-delay type.
• Do not make any extreme adjustments or setting changes of parameters.
Failure to observe this caution may result in injury or damage to the product due to unstable operation.
• The servomotor cannot be operated by turning the power on and off.
Frequently turning the power ON and OFF causes the internal circuit elements to deteriorate, resulting
in unexpected problems. Always start or stop the servomotor by using reference pulses.
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