User Manual of SY5000 series AC Drive Wiring
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④
Don’t form the grounding line to a loop in the place when use two or more
inverters. Correct and wrong grounding methods are as shown in Figure 3-5.
Figure 3-5 Grounding comection
3.5 Wiring of control circuit terminal
In order to reduce interference and attenuation of control signal, wire length of
control signal should be less than 20m. The interval distance between wire length
and power line should be more than 30cm. Control signal line should be twisted-pair
shield cable.
3.5.1 Wire size and line terminal of general control circuit
Table 3-4 Size of terminal and wire and tightening torque of screw
Terminal
screw
Sectional area of wire
（
mm
2
）
Wire type
Tightening torque
of screw
（
N
·
m
）
M3.5
0.5~2
Multi-unit
shield wire
0.8