Main Circuit Terminals; Details On The Main Circuit Terminals - Mitsubishi Electric FR-A820-00046 Instruction Manual

Installation and wiring
2.5

Main circuit terminals

2.5.1

Details on the main circuit terminals

Terminal
symbol
R/L1,
S/L2,
T/L3
U, V, W
R1/L11,
S1/L21
P/+, PR
P3, PR
P/+, N/-
P3, N/-
P/+, P1
PR, PX
Tab. 2-7:
NOTE When connecting an optional brake resistor (FR-ABR) or a brake unit (FR-BU2, FR-BU, BU), remove
the jumpers across the terminals PR and PX. For the details, refer to page 2-87.
FR-A800
Terminal name
AC power input
Inverter output
Power supply for the control
circuit
Brake resistor connection
FR-A820-00630(11K) or lower
FR-A840-00380(15K) or lower
Brake resistor connection
FR-A820-00770(15K) to
01250(22K)
FR-A840-00470(18.5K) to
01800(55K)
Brake unit connection
FR-A820-00630(11K) or lower
FR-A840-00380(15K) or lower
Brake unit connection
FR-A820-00770(15K) to
01250(22K)
FR-A840-00470(18.5K) to
01800(55K)
DC reactor connection
FR-A820-03160(55K) or lower
FR-A840-01800(55K) or lower
DC reactor connection
FR-A820-03800(75K) or higher
FR-A840-02160(75K) or higher
Built-in brake circuit connection
Earth (ground)
Specification of main circuit terminal
Terminal function description
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 the terminals
P/+ and PR. Remove the jumper across the terminals PR and PX
for the inverter capacity that has the terminal PX.
Connecting a brake resistor increases the regenerative braking
capability.
Connect an optional brake resistor across the 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 of the terminal P/+
or P3 for the connection. (Do not use the 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 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. This must be
earthed (grounded).
Main circuit terminals
Refer to
page
—
—
2-57
2-87
2-92
2-101
—
2-42
2 - 33