Omron SYSDRIVE RX Series User Manual page 37

Ground Terminal (G
• To prevent electric shock, be sure to ground the Inverter and the motor.
• According to the Electric Apparatus Engineering Regulations, the 200-V class Inverter should be
connected to the grounding electrodes under type-D grounding conditions (conventional type 3
grounding: ground resistance 100 Ω or less), the 400-V class Inverter should be connected to the
grounding electrodes under type-C grounding conditions (conventional special type 3 grounding:
ground resistance 10 Ω or less).
• For the ground cable, use the applicable cable or a cable with a larger diameter. Make the cable
length as short as possible.
• When several Inverters are connected, the ground cable must not be connected across several
Inverters, and must not be looped.
Otherwise, the Inverters may malfunction.
Inverter
Inverter
Inverter
Installing Screws in the Main Circuit Terminal Block
• For the main circuit terminal blocks of 3G3RX-A2055/-A2075/-A4055/-A4075, be sure to install
the terminal block screw washers with their grooved sides aligned vertically, as shown below.
Not doing so may result in a contact failure or fire.
(Intended terminals: R/L1, S/L2, T/L3, +1, P/+2, N/-, U/T1, V/T2, W/T3, RB)
Terminal block screw washer
)
Inverter
Inverter
Inverter
2-2 Wiring
Your ground bolt
2-14
2