Main Circuit Terminals - Mitsubishi Electric 800 Series Instruction Manual

Main circuit terminals

2.5
Main circuit terminals
2.5.1
Details on the main circuit terminals
Terminal
Terminal name
symbol
R/L1,
S/L2, AC power input
T/L3
U, V, W Inverter output
R1/L11, Power supply for the control
S1/L21 circuit
Brake resistor connection
P3, PR FR-A860-00027 to 00170 and
FR-A860-00450 to 01080
Brake resistor connection
P/+, PR
FR-A860-00320
P/+, N/- DC terminal
DC reactor connection
FR-A860-01080 or lower
P/+, P1
DC reactor connection
FR-A860-01440 or higher
Earth (ground)
34
INSTALLATION AND WIRING
Terminal function description
Connect these terminals to the commercial power supply.
Connect these terminals to a three-phase squirrel cage motor or a PM
motor.
Connected to the AC power supply terminals R/L1 and S/L2. To retain the
fault display and fault output, remove the jumpers across terminals R/L1
and R1/L11 and across S/L2 and S1/L21, and supply external power to
these terminals.
The power capacity necessary when separate power is supplied from R1/
L11 and S1/L21 differs according to the inverter capacity.
FR-A860-00170 or lower
60 VA
FR-A860-00320 or higher
80 VA
Connect the provided brake resistor or another brake resistor across the
terminals P3 and PR.
Connecting a brake resistor increases the regenerative braking capability.
Connect a brake resistor across the terminals P/+ and PR.
Connecting a brake resistor increases the regenerative braking capability.
Connect these terminals to the DC power supply for DC feeding. A brake
unit can be also connected to these terminals.
Remove the jumper across terminals P/+ and P1, and connect a DC
reactor.
When a DC reactor is not connected, the jumper across terminals P/+ and
P1 should not be removed.
When using a motor with a capacity of 75 kW or higher, always connect a
DC reactor.
Always connect a DC reactor. (The jumper is not installed for the FR-A860-
01440 or higher.)
For earthing (grounding) the inverter chassis. This must be earthed
(grounded).
Refer to
page
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39,
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