Main Circuit Terminal Specifications; Specification Of Main Circuit Terminal - Mitsubishi Electric FR-A700 Instruction Manual

Main circuit terminal specifications

2.2 Main circuit terminal specifications

2.2.1

Specification of main circuit terminal

Terminal
Terminal Name
Symbol
R/L1,
S/L2, AC power input
T/L3
U, V, W Inverter output
R1/L11, Power supply for
S1/L21 control circuit
Brake resistor
connection
P/+, PR
(FR-A720-00900 (FR-
A740-00440) or less)
Brake unit
P/+, N/-
connection
DC reactor
P/+, P1
connection
Built-in brake circuit
PR, PX
connection
Earth (Ground)
CAUTION
· When connecting a dedicated brake resistor (FR-ABR) and brake unit (FR-BU2, FR-BU, BU) remove jumpers across terminals
PR-PX (FR-A720-00330 (FR-A740-00170) or less). For details, refer to page 43 to 48.
16
Connect to the commercial power supply.
Keep these terminals open when using the high power factor converter
(FR-HC and MT-HC) or power regeneration common converter (FR-CV).
Connect a three-phase squirrel-cage motor.
Connected to the AC power supply terminals R/L1 and S/L2. To retain the
alarm display and alarm output or when using the high power factor
converter (FR-HC and MT-HC) or power regeneration common converter
(FR-CV), remove the jumpers from terminals R/L1-R1/L11 and S/L2-S1/
L21 and apply external power to these terminals.
Do not turn off the power supply for control circuit (R1/L11, S1/L21) with the
main circuit power (R/L1, S/L2, T/L3) on. Doing so may damage the
inverter. The circuit should be configured so that the main circuit power (R/
L1, S/L2, T/L3) is also turned off when the power supply for control circuit
(R1/L11, S1/L21) is off.
FR-A720-00610 (FR-A740-00310) or less : 60VA,
FR-A720-00760 (FR-A740-00380) or more : 80VA
Remove the jumper from terminals PR-PX (FR-A720-00330 (FR-A740-
00170) or less) and connect an optional brake resistor (FR-ABR) across
terminals P/+-PR.
For the FR-A720-00900 (FR-A740-00440) or less, connecting the
resistor further provides regenerative braking power.
Connect the brake unit (FR-BU2, FR-BU, BU and MT-BU5), power
regeneration common converter (FR-CV), high power factor converter
(FR-HC and MT-HC) or power regeneration converter (MT-RC).
For the FR-A720-02150 (FR-A740-01100) or less, remove the jumper
across terminals P/+ - P1 and connect the DC reactor. (As a DC reactor
is supplied with the FR-A720-02880 (FR-A740-01440) or more as
standard, be sure to connect the DC reactor. When using the FR-A720-
02150 (FR-A740-01100) with LD or SLD set, always use a DC reactor
(option).)
When the jumper is connected across terminals PX-PR (initial status),
the built-in brake circuit is valid. (Provided for the FR-A720-00330 (FR-
A740-00170) or less.)
For earthing (grounding) the inverter chassis. Must be earthed
(grounded).
Description