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Explanation Of Main Circuit Terminals - Mitsubishi Electric FR-S520E Series Instruction Manual

Transistored inverter.
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CAUTION
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
MCCB
Power
supply
REMARKS
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.
1.1.2

Explanation of main circuit terminals

(1) Main circuit
Terminal
Terminal Name
Symbol
R/L1, S/L2,
AC power input
T/L3 (*1)
U, V, W
Inverter output
Brake resistor
P/+, PR (*2)
P/+, N/
P/+, P1
Earth (ground)
*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.
MC
R/L
1
S/L
2
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-
connection
S520E-0.4K to 3.7K only.)
Connect the brake unit (BU), power regeneration
Brake unit
common converter (FR-CV) or high power factor
connection
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
DC reactor
the optional DC reactor (FR-HEL(-H)/FR-BEL(-H)).
connection
(The single-phase 100V power input model cannot be
connected.)
For earthing (grounding) the inverter chassis. Must be
earthed (grounded).
Standard connection diagram and terminal specifications
U
V
W
Description
3
Motor
IM
Earth (Ground)
1

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