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(B) Main Circuit wiring :
(1) It doesn’t need to consider the phase sequence for input power R, S, T.
(2) Prohibit connecting U,V and W of inverter output terminals to AC power.
(3) Inverter output terminal U, V and W are connected to the motor terminal U, V, W. If
the inverter executes forward rotation instruction while the motor rotates in reversal
direction, simply exchange any two wires of U, V, W is enough.
(4) Never connect the inverter output terminal to the capacitor or LC,RC noise filter of
improving the power factor.
(C) Grounding wire :
(1) Grounding terminal (E) is grounded to the earth by the third type grounding way.
(grounding resistance of 100Ω or less)
(2) Inverter grounding wire can not be grounded together with high-current loads such
as welding machines and high-powered motors and so on. They must be grounded
respectively.
(3) Grounding wire size follows the specification of electrical equipment technical
basis. The shorter grounding wire is, the better it is.
(4) If several inverters are grounded jointly, please refer to the following diagrams for
grounding. Do not form a circuit in grounding.
(a) 良 (b) 良 (c) 不良
Figure 5 Grounding ways of several A150 jointly
(a) Good
(b) Good (c) Not Good
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