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16
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Operation Instruction of S900 E Series Inverter
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17
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Before starting operation, always recheck the following items.
(1) Use crimping terminals with insulation sleeve to wire the power
supply and motor.
(2) Application of supply power to the output terminals (U,V,W) of
the inverter will damage the inverter. Never perform such wiring.
(3) After wiring, wire offcuts must not be left in the inverter.
Wire offcuts can cause an alarm ,failure or malfunction. Always keep
the inverter clean . When drilling mounting holes in an enclosure
etc., take are not to allow chips and other foreign matter to enter the
inverter.
(4) This inverter must be earthed. Earthing must conform to the
requirements of national and local safety regulations and electrical
codes.
(5) Use the thickest possible earth cable.
(6) The grounding point should be as near as possible to the
inverter, and the ground wire length should be as short as possible.
(7) Where possible, use independent earthing for the inverter. If
independent earthing is impossible, use joint earthing (
Ⅰ
,
Ⅱ
) where
the inverter is connected with the other equipment at an earthing
point. Joint earthing as in (
Ⅲ
) must be avoided as inverter is
connected with the other equipment by a common earth cable.
Correct
Ⅰ
Correct
Ⅱ
Incorrect
Ⅲ
(8) To prevent a malfunction due to noise, keep the signal cables
more than 10 cm away from the power cables.