Service manual

www.enc.net.cn/en Tel/Fax:[phone] Installation and wiring
13
(1) Disassembly
First take off 2 screws at sides of the cover and move it a bit outward
horizontally, then tilt it at 15 degree and draw it outward at direction shown in
right figure, now you can take the cover off.
(2) Assembly
First put down the cover in parallel with unit body and make it just locked at
2 sides of the inverter, secondly force it ahead and make fixing part on its top
inserted into fixing slot of unit body, at last screw the cover and finish assembly
for the cover. As shown in Fig.3-5.
3.3 wiring notice points
3.3 Wiring notice points
Fig. 3-4 disassembly and mounting
sketch of plastic cover
(1) Assure power cuf off completely for above 10 minutes before wiring，otherwise have
danger of getting electric shock.
(2) Forbid connecting power wire to output U, V, W of the inverter.
(3) There is current leakage in the inverter and leak current of middle/high power inverter
is bigger than 5mA，for safety reason，inverter and motor must be earthed safely，
commonly use 3.5mm² above copper wire as ground wire and ground resistance
smaller than 10Ω.
(4) Before shipment compression resistance test of the inverter is passed，so user should
not conduct compression resistance test again.
(5) Should not assemble electromagnetic contactor and absorbing capacitance or other
absorbing device, see fig. 3-5.
(6) To be convenient to over current protect of input side and power off maintenance
inverter should be connected to power supply through relay.
(7) Connecting wire for relay input and output loop(X1~X8, OC1~OC4, FWD, REV),
should use above 0.75mm² glued wire or shielding wire，one shielding layer end hung
in the air, the other connected to grounding end PE or E, connecting wire shorter than
20
m
.
!
Fig.3-5 disassembly and assembly
for metal cover