NVF5 Series User Manual Chapter 3 Installation and Wiring
3.5.4 Wiring Checking
Step One：Whether the inverter rated power and rated input voltage match with the
motor specifications；
Step Two：The single-phase input power supply is connected with inverter input power
terminals L1, L2; The three-phase input power supply is connected with inverter input
power terminals R, S, T
Step Three：When using brake resistor，for single-phase machine,the brake resistor
will be connected between P+、B，for three-phase machine,the brake resistor will be
connected between P、B；
Step Four：Whether the motor cable is connected to inverter motor terminal U、 V、
W；
Step Five：Whether the Grounding is connected correctly；
Step Six：Whether the power cable
satisfy the current carrying requirement and the
1mm
2
control cable is recommended,the power cable and control cable are separated；
Step Seven：If the motor output cable exceed 50m，the AC output reactor should be
installed；
Step Eight：The cable of brake unit should be less than 10m，the twisted cable or
paralle double line should be wired；
Step Nine ： Analog Input 、 Output signal are easy to disturbed by external
interference,so the shield cable should be selected and the shielding layer should be well
grounded,the length of shield cable should be short as possible；
3.6 I/O Terminal Description
3.6.1 Multifunctional DI Terminal Using Description
（1） COM is the Common terminal of DI1～DI4 and HDI，Digital inut terminals
connect +24V。DI1～DI4 and HDI connection is as below：
Dry contact mode，using internal +24V power supply of the inverter
Figure 3-6-1 Using Internal+24VPower Supply Connecting Mode
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