Main Circuit Terminals; Details On The Main Circuit Terminals - Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual

2.5

Main circuit terminals

2.5.1

Details on the main circuit terminals

Terminal symbol
R/L1, S/L2, T/L3 AC power input
U, V, W Inverter output
Power supply for the control
R1/L11, S1/L21
circuit
Brake resistor connection for
P/+, PR FR-A820-00630(11K) or lower, or
FR-A840-00380(15K) or lower
Brake resistor connection for
FR-A820-00770(15K) to
P3, PR 01250(22K) or
FR-A840-00470(18.5K) to
01800(55K)
P/+, N/- Brake unit connection
Brake unit connection for
FR-A820-00770(15K) to
P3, N/- 01250(22K) or
FR-A840-00470(18.5K) to
01800(55K)
DC reactor connection for
FR-A820-03160(55K) or lower, or
FR-A840-01800(55K) or lower
P/+, P1
DC reactor connection for
FR-A820-03800(75K) or higher,
or
FR-A840-02160(75K) or higher
PR, PX Built-in brake circuit connection
Earth (ground)
NOTE
• When connecting an optional brake resistor (FR-ABR) or a brake unit (FR-BU2, FR-BU, BU), remove the jumpers across
terminals PR and PX. For the details, refer to
54
2. INSTALLATION AND WIRING
2.5 Main circuit terminals
Terminal name
Connect these terminals to the commercial power supply.
Do not connect anything to these terminals when using the high power
factor converter (FR-HC2) or the power regeneration common
converter (FR-CV).
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, or to use a high power factor converter
(FR-HC2) or a power regeneration common converter (FR-CV),
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-A820-00630(11K) or lower FR-A840-00380(15K) or lower: 60 VA
FR-A820-00770(15K) or higher FR-A840-00470(18.5K) or higher: 80
VA
Connect an optional brake resistor (FR-ABR) across terminals P/+ and
PR.
Remove the jumper across terminals PR and PX for the inverter
capacity that has terminal PX.
Connecting a brake resistor increases the regenerative braking
capability.
Connect an optional brake resistor across terminals P3 and PR.
Connecting a brake resistor increases the regenerative braking
capability.
Connect the brake unit (FR-BU2, FR-BU, BU), power regeneration
common converter (FR-CV), power regeneration converter (MT-RC),
high power factor converter (FR-HC2), or DC power supply (under DC
feeding mode).
When connecting multiple inverters, FR-A820-00770(15K) to
01250(22K) or FR-A840-00470(18.5K) to 01800(55K), in parallel using
the FR-CV or FR-HC2, always use either terminal P/+ or P3 for the
connection. (Do not use terminals P/+ and P3 together.)
Do not connect the DC power supply between terminals P3 and N/-.
Use terminals P/+ and N/- for DC feeding.
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, which is available as an option.
Always connect a DC reactor, which is available as an option.
When the jumper is connected across terminals PX and PR (initial
status), the built-in brake circuit is valid.
The built-in brake circuit is equipped in the FR-A820-00490(7.5K) or
lower and FR-A840-00250(7.5K) or lower.
For earthing (grounding) the inverter chassis. Be sure to earth (ground)
the inverter.
Terminal function description
page 96.
Refer to
page
—
—
76
96
100
105
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66