Wiring The Main Circuit Terminals - Omron SYSDRIVE RX Series User Manual

*5. Once slide switch SW1 is set to [ON], allocation of multi-function input terminals S1 and S3 will
not be restored, even if SW1 is reset to [OFF] afterward. Re-allocate the terminal function.

Wiring the Main Circuit Terminals

Main Power Supply Input Terminals (R/L1, S/L2, T/L3)
• Use an earth leakage breaker for circuit (wiring) protection between the power supply and the
main power supply terminals (R/L1, S/L2, T/L3).
• An earth leakage breaker may malfunction due to the effect of high frequency. Use an earth
leakage breaker with a large high-frequency sensitivity current rating.
• If the Inverter protection function is activated, a malfunction or accident may have occurred to your
system. Connect a magnetic contactor to turn off the Inverter power supply.
• Do not start or stop the Inverter by switching ON/OFF the magnetic contactor connected on the
Inverter power supply input (primary) side and output (secondary) side.
To start or stop the Inverter via an external signal, use the operation command (FW or RV) on the
control circuit terminal block.
• This Inverter uses a 3-phase power supply. A single-phase power supply cannot be used.
• Do not use this Inverter with a phase loss power input. Doing so may damage the Inverter.
By factory default, the phase loss input protection is disabled. If a phase of power supply input is
interrupted, the Inverter reverts to the following status:
R-phase or T-phase is interrupted: The Inverter does not operate.
S-phase is interrupted:
Even if the power input is under a phase loss condition, the internal capacitor is charged with
voltage, causing an electric shock or injury.
When changing the cable connections, refer to the instructions on page 2-1.
Slide switch SW1
Slide lever (factory default: OFF)
OFF ON
The Inverter reverts to single-phase operation, causing a
trip (due to undervoltage, overcurrent, etc.) or damage to
the Inverter.
2-2 Wiring
2
2-12