Kinco FD5 AC series servo driver user manual Chapter 3 Servo system interface and wiring
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Table 3-4 Recommended contactor models
Danger!
FD435/FD625 drives are factory-configured with short wires connected to DC+/RB- and RB2,
indicating the use of internal braking resistors (FD435 built-in 100Ω/20W；FD625 built-in
300Ω/20W)，When the braking power exceeds the tolerable range of the internal braking resistor, the
drive will alarm the braking resistor to be abnormal and display "0100". When the actual braking
power exceeds the limit power, please disconnect the short circuit before connecting the external
braking resistor. For the selection of external braking resistor, please refer to Appendix 1。
It is forbidden to connect the power cable to the UVW terminal, and it is forbidden to connect the
external braking resistor to the DC+(RB+) and DC- terminals. Before the drive is powered on, please
check again whether the wiring is correct.。
There may be high voltage remaining in the drive after the power is cut off. Please confirm that the
CHARGE indicator has gone out ten minutes after the power is cut off before overhauling the drive.
The drive has a built-in dynamic braking circuit, which provides braking resistance through the
internal resistance of the motor, which can effectively shorten the braking distance when the motor
stops in an emergency.
Do not drag the motor to run at high speed under the condition of power cut-off, the back
electromotive force generated when the motor rotates will cause damage to the drive or motor.
3.2.1 Wiring connection description
Servo system connection refer Table 3-5. If the power cable is too long, the wire diameter needs to be increased appropriately.
Table 3-5 wiring specification table
Diameter:18~14AWG 0.8~2mm
²
Stripping length: 8-10mm
Diameter:14~12AWG
1.75~3.3mm²
Stripping length: 7-8mm
Diameter:15~12AWG 1.5~3.3mm
²
Stripping length 7-8mm
Diameter 26~22AWG，0.13-0.3mm²，Stripping length 2mm
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.
3.2.2 Drive EMC configuration description
FD5 servo drive meets the relevant EMC certification specifications under the set conditions, but during the use of the product, it
may be affected by the actual installation method, connection head and wiring status, resulting in different EMC test levels.
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