To prevent a malfunction due to noise, keep the signal cables more than 10cm away
from the power cables.
Single-phase 200V power input
Single-phase 100V power input
To ensure safety, connect the power input to the inverter via a magnetic contactor and earth leakage
circuit breaker or moulded case circuit breaker, and use the magnetic contactor to switch power on-off.
The output is three-phase 200V.
Explanation of main circuit terminals
(1) Main circuit
AC power input
U, V, W
P/+, PR (*2)
*1. When using single-phase power input, terminals are R/L1 and S/L2.
*2. The PR terminal is provided for the FR-S520E-0.4K to 3.7K.
Connect to the commercial power supply.
Connect a three-phase squirrel-cage motor.
Connect the optional brake resistor (MRS/MYS type, FR-
ABR) (The brake resistor can be connected to the FR-
S520E-0.4K to 3.7K only.)
Connect the brake unit (BU), power regeneration
common converter (FR-CV) or high power factor
converter (FR-HC). (The N/- terminal is not provided for
the FR-S520E-0.1K to 0.75K.)
Remove the jumper across terminals P - P1 and connect
the optional DC reactor (FR-HEL(-H)/FR-BEL(-H)).
(The single-phase 100V power input model cannot be
For earthing (grounding) the inverter chassis. Must be
Standard connection diagram and terminal specifications