Kinco FD5 AC series servo driver
Chapter3 Installation and wiring
3.2.2 Drive anti-interference measurements
The high-frequency interference generated by the switching circuit in the drive will cause the
failure of sensitive circuits. Configuring a noise filter and earthing can effectively avoid equipment
failure caused by noise current, in order to minimize the impact of noise interference.
。
(1)
Noise filter
⚫
Install a noise filter close to the power input side of the servo drive, and take grounding
measurement for the filter；
⚫
The drive and filter are installed in the same metal backplane (electro-galvanized steel sheet) and the
metal backplane is well grounded；
⚫
Install surge suppressors on the coils of relays and electromagnetic contactors to prevent damage to
equipment from peak current and voltage；
⚫
Please do not share the power supply with welding machines, lasers, etc.
Main
power
supply
Encoder cable
Driver
L1
L2
U
V
W
PE
Shielding layer
Grounding resistance＜100Ω
Noise filter
Metal backplane
Figure 3-6 noise filter connection
(2)
Drive grounding
⚫
Be sure to ground the drive, otherwise there is a risk of electric shock or interference affecting the
performance of the drive；
In order to ensure the stable and safe use of the product, the following matters should be paid
attention to when wiring the drive:
◆
Pay attention to the fixation of the cable during the assembly process, and do not apply stress
to the connector, otherwise the connector may be damaged.
◆
For the motor power line and encoder line, please use the cables provided by the
manufacturer, calculate the connection distance of the equipment, and choose the shorter
cables as possible.
◆
The bending radius of the cable should be more than 5-10 times of the wire diameter to prevent
the inner core of the cable from breaking after long-term use. The cable should avoid tension
during use, and flexible cables should be considered in some drag chain applications.
◆
Usually, the wiring should be 8A/mm² according to the output current of the drive. When the power
cable is longer than 30 meters, the wire diameter should be increased.
◆
Keep an interval of more than 30cm between power cables and signal cables. Avoid parallel laying
as much as possible. Do not lay power cables and signal cables in the same slot or bundle them
together.
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