9. SPECIFICATIONS
9－48
9.1.13 Servo Amplifier/Servomotor Leakage Current
Since the PY2 servo amplifier drives the motor under the PWM control of the IGBT, high frequency
leakage current can flow through the ground floating capacity of the motor winding, power cable or
amplifier, thereby causing a malfunction of the leakage circuit breaker or leakage protective relay installed
on the power line on the power supply side. Therefore, use a leakage circuit breaker that matches the
inverter so as not to cause such a malfunction.
Table 9-12 Leakage Current
Amplifier model No. Motor model No. Leakage current per motor
P10B□□□□□□□◇▽▽ 0.5 mA
P20B□□□□□□□◇▽▽ 0.5 mA
P30B□□□□□□□◇▽▽ 0.5 mA
P50B□□□□□□□◇▽▽ 0.5 mA
P60B□□□□□□□◇▽▽ 0.5 mA
PY2A015
PY2A030
PY2E015
PY2E030
P80B□□□□□□□◇▽▽ 0.5 mA
P10B□□□□□□□◇▽▽ 1.5 mA
P20B□□□□□□□◇▽▽ 1.5 mA
P30B□□□□□□□◇▽▽ 1.5 mA
P50B□□□□□□□◇▽▽ 1.5 mA
P60B□□□□□□□◇▽▽ 1.5 mA
PY2A050
P80B□□□□□□□◇▽▽ 1.5 mA
1 When using two or more motors, add the leakage current per unit of each motor.
2 Since the above table shows the values in the case of a 2-meter cabltyre cable, the
leakage current will increase or decrease if a shorter or longer cable is used.
Therefore, the values shown in Table 9-12 are just the reference values.
3 Be sure to execute grounding (Class 3) of the machine so that a dangerous voltage may
not leak to the machine body or operating panel.
4 The values shown in Table 9-12 are those measured with an ordinary leak checker with
filter 700 Hz).
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