AC70 VC CONTROL FREQUENCY INVERTER MANUAL INSTALLATION AND WIRING
9
Chapter 3: Installation and Wiring
3.1 Safety Precautions
This chapter explains the warnings for safe use and stable running of the product.
Cautions in use
●
While install the inverter in the closed cabinet, please build in cooling fan, air-conditioner or
other cooling equipment to ensure the temperature at the air-in port below 40
℃
. So that the
inverter can work safely and reliably.
●
While installing, please use cloth or paper cover the inverter to prevent metal dust, oil, water
and others.And remove it carefully after working.
●
While operation, please follow the ESD regulations. Otherwise, the inverter may be
damaged.
●
While multi inverters are installed in the same cabinet, enough space must be left for cooling
fan.
●
Inverter can not work over rated range.Otherwise, the inverter may be damaged.
●
While transporting the inverter, please hold the firm case. If only hold the pre-cover, there is
danger of inverter main body falling, injury or inverter damage.
Cautions in use motor
●
Different motor has different max allowable running speed. Motor can not run over the max
allowable running speed.
●
While inverter is running at low speed, the motor auto-cool effect is seriously worse. If motor
runs at low speed for long time, it will be damaged for overheat. If needed, please use special
motor for inverter.
●
While constant speed machinery runs at inconstant speed, there maybe sympathetic vibration.
Please install vibration-proof rubber under motor rack or use jumping frequency control
function.
●
While using frequency inverter or working frequency power supply to drive, the torque
characteristic are different. Please do confirm the torque characteristic of the equipment
connected.
●
The rated current of shift gear motor is different from that of standard motor. Please confirm it
and choose the right frequency inverter. Moreover, please do switch the pole while the inverter
input current is 0. Otherwise it may bring inverter protection or damage.
●
The rated current of diving motor is higher than that of standard motor, please confirm it and
choose the right inverter.
●
While the wire between motor and inverter is long, the max torque of the motor will reduce for
voltage drop. So please use thick cable while the distance between the motor and the inverter
is long.
3.2 Treatment for Inverter after Longtime Store
If the inverter store time is over one year, you must pre-charge the aluminum capacitor in the inverter again and install
the inverter after the aluminum capacitor characteristic recovering. For the specific method, please follow the grads in
the chart below and give corresponding proportional voltage for every grad more than 30 mins while the inverter is
no-load.
If the input voltage of one grad is at the action critical point of contactor, fan or other equipment, please increase or
reduce the corresponding input voltage for the grad to avoid any component working under critical state.
