SUNFAR E300 SERIES 7
3 WIRING
3.1 Precautions
（
1
）
Install a middle breaker between inverter and power supply avoiding enlarging accident.
（
2
）
For reducing electromagnetic interface (EMI), please connect surge absorber to coil of
electromagnetic contactors, relays etc.
（
3
）
Freq setting terminal AI, instrument circuit
（
AO
）
etc., these analog signals wire should be
over 0.3mm² shield wire. Shield layer is connected with ground terminal CM less than 30m.
（
4
）
Wiring of relay input and output loop (X1 ~ X3) should choose over 0.75mm² intertwist or
shield wire. Shield layer should be connected to control terminal CM less than 50m.
（
5
）
Separate control wire from main loop wire, parallel wiring should be part over 10cm, and
across wiring should be vertical.
（
6
）
Wire of Inverter and motor should be less than 30m. When it is over 30m, it should
decrease inverter carrier wave freq properly.
（
7
）
All down-lead should be tightened with terminals to ensure well-contact.
（
8
）
Compressive resistance of all down-lead should match with inverter volt.
Inverter output terminal U
、
V
、
W should not add absorber capacitor or other
RC absorber shown as fig.3-1.
Inverter
U
V
W
M
Motor
RC absorber
Fig 3-1 Output terminal does not allow connecting RC absorber
E300 Series Mini-type Integrated Universal Inverter Manual
