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ProNet Series AC Servo User's Manual
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(2) Correct Grounding
Take the following grounding measures to prevent the servo drive from malfunctioning due to noise.
￭
Grounding the Motor Frame
If the servomotor is grounded via the machine, a switching noise current will flow from the servo drive main circuit through
the servomotor stray capacitance.
Always connect servomotor frame terminal FG to the servo drive ground terminal. Also be sure to ground the ground
terminal .
￭
Noise on the I/O Signal Line
If the I/O signal line receives noise, ground the 0 V line (SG) of the reference input line. If the main circuit wiring for the
motor is accommodated in a metal conduit, ground the conduit and its junction box. For all grounding, ground at one point
only.
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3
）
Precautions on installing on the control panel
￭ When the servo drive is installed on the control panel, a piece of metal plate should be fixed. It is used for fixing the servo
drive and other peripheral devices. The noise filter should be installed on the metal plate, and closed to the hole drill
through power lines on control panel. Use screws to fix the noise filter to the metal plate. The grounding terminals of noise
filter connects to the grounding terminals of control panel.
￭ Servo drive should be fixed on a piece of metal plate. Make sure the heat sink towards ground. The grounding terminals
of servo drive connect to the grounding terminals of control panel.
3.6.2 Precautions on Connecting Noise Filter
(1) Noise Filter Brake Power Supply
Use the noise filter Manufactured by SCHAFFNER at the brake power input for servomotors with holding brakes.
Relationship between servo drive power and noise filter current:
Servo Drive Power Noise Filter Current
0.2kW 1A
0.4kW 2A
0.75kW 4A
1 kW 4A
1.5 kW 6A
2 kW 8A
3 kW 12A
5 kW 20A
7.5kW 30A
11kW 44A
15kW 60A
22kW 88A