MITSUBISHI ELECTRIC FR-S520E - Manual (Page 13)

3
Standard connection diagram and terminal specifications
1
WI
RING
Single-phase 200V power input
Single-phase 100V power input
1.1.2 Explanation of main circuit terminals
(1) Main circuit
CAUTION
To prevent a malfunction due to noise, keep the signal cables more than 10cm away
from the power cables.
REMARKS
• To ensure safety, connect the power input to the inverter via a magnetic contactor and earth leakage
circuit breaker or no-fuse breaker, and use the magnetic contactor to switch power on-off.
• The output is three-phase 200V.
Terminal
Symbol
Terminal Name Description
R/L1, S/L2,
T/L3 (*1)
AC power input Connect to the commercial power supply.
U, V, W Inverter output Connect a three-phase squirrel-cage motor.
P/+, PR (*2)
Brake resistor
connection
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.)
P/+, N/
− Brake unit
connection
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.)
P/+, P1
Power factor
improving DC
reactor
connection
Remove the jumper across terminals P - P1 and connect
the optional power factor improving DC reactor (FR-
BEL(-H)).
(The single-phase 100V power input model cannot be
connected.)
Earth (ground)
For earthing (grounding) the inverter chassis. Must be
earthed (grounded).
*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.
NFB
IM
U
V
W
MC
Power
supply
Motor
Earth (Ground)
S/L 2
R/L 1