Mitsubishi Electric FR-A800 Series Beginner's Manual page 35

Connections
The following table lists the power connection terminals found on the various inverter models.
Terminals
R/L1, S/L2, T/L3
U, V, W
R1/L11, S1/L21
P/+, PR
P3, PR
P/+, N/−
P3, N/–
P/+, N/−
P/+, P1
PR, PX
Frequency Inverters - Beginner's Guide
Function Description
Mains power supply
Mains power supply input for the frequency inverter
(3-phase)
This is the inverter's power output
Inverter output
Connect these terminals to a three-phase squirrel cage motor or a PM
motor.
FR-A820/A840: Connected to AC power supply terminals R/L1 and S/L2
Control circuit power FR-A842: Connected to terminals P/+, N/–
FR-A846: Not applicable
Standard models only
Brake resistor connection Connecting a brake resistor increases the regenerative braking capabil-
ity.Terminals depending on inverter capacities.
An optional external brake unit can be connected to these terminals.
External brake unit/
Terminals depending on inverter capacities.
Converter unit connection. For separated converter type (FR-A842)
A DC reactor can be connected to these terminals (standard models
only).
You must remove the jumper before connecting the reactor.
Depending on inverter and motor capacities, a DC reactor has to be con-
DC reactor
nected (available as an option)
FR-A842: Not applicable
FR-A846: Jumper should not be removed.
Standard models only.
Built-in brake circuit con-
When the jumper is connected across terminals PX and PR (initial status),
nection
the built-in brake circuit is valid (depending on inverter capacity).
PE Earth (ground) connection
Power supply, motor and earth connections
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