FR500A&FR510A Series Vector Control Inverter
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absorbing circuit such as RC absorbing circuit (note that its leakage current shall be less than holding
current of controlled contactor or relay), piezoresistor or fly-wheel diode etc. shall be mounted (be sure
to pay close attention to polarity in case of DC electromagnetic circuit). Absorbing devices should be
mounted close to the ends of relay or contactor.
5) Instruction of Signal Switch
Terminal
Function
Factory
default
AI1
I: current input (0
~
20mA); V: voltage input (0
~
10V)
0
~
10V
AI2
I: current input (0
~
20mA); V: voltage input (0
~
10V)
0
~
10V
AO1
I: current output (0
~
20mA); V: voltage output (0
~
10V)
0
~
10V
AO2
I: current output (0
~
20mA); V: voltage output (0
~
10V)
0
~
10V
RS485
Selection of 485 termination resistor; ON :120Ω termination
resistor provided; OFF: no termination resistor
No
termination
resistor
3.8.3 RFI Short wiring instructions
If the AC motor drive is supplied from an isolated power (IT power), the RFI jumper must be cut off.
Then the RFI capacities (filter capacitors) will be disconnected from ground to prevent circuit damage
(according to IEC 61800-3) and reduce earth leakage current.
4.0
~
22kW RFI jumper method: Screw matter is jumped state, release is not jumped state
Fig.3-23 4.0
~
22kW RFI jumper schematic