AS64 series AC servo drive Operating and running
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5.1 Running
5.1.1 First power-on
Ensure the following before the power-on:
Wiring
⚫ The power supply (namely, cables L1, L2, L3, L1C, and L2C or cables R, S, and T) of the
servo drive is connected correctly. For details, see section 3.2 "Main circuit terminal wiring".
⚫ The servo drive output phases (U, V, and W) are consistent with servo motor cable phases.
⚫ There is no short circuit between the servo drive outputs (U, V, and W) and the input power
(namely, cables L1, L2, and L3, or cables R, S, and T)
⚫ Wiring complies with the standard wiring diagrams for different control modes in chapter 4
"Control modes".
⚫ The external servo enabling terminal SON is set to OFF.
⚫ The servo drive and the servo motor are grounded properly.
⚫ If an external brake resistor is used, for products with small power range, the short-
connection cable between B2 and B3 must be removed.
⚫ The voltage applied to CN1 cannot be greater than DC24V.
⚫ Stresses applied to cables are within the allowed ranges.
Environment
There are no foreign materials, such as wire leads and metal filings, which can cause short
connection between signal and power cables.
Mechanical parts
⚫ The installation of the servo motor and the connection between shafts and machines are
reliable.
⚫ The servo motor and connected machines are operational.
⚫ Do not run the motor with a negative load, which indicates the motor output torque direction
is opposite to the motor speed direction.
You can turn on the power only after all the preceding conditions are met.
5.1.1.1 Sequence of power-on and power-off
The control circuit and main circuit of the drive are powered separately. In principle, for power-on, the
control circuit power supply (namely, terminals L1C and L2C) is switched on before the main circuit
power supply (namely, terminals L1, L2, and L3); for powering off, the main circuit power supply is
switched off before the control circuit power supply.
If the control circuit power supply is switched on but the main circuit power supply is not switched on,
R0.30 [System status] is 0 [Initializing]. If both the power supplies are switched on, R0.30 is 2
[Ready] and the servo drive can be enabled.
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