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Note for terminal P3 (200/400 V class only)
Some descriptions about terminal P3 are incorrect in the Instruction Manual. The descriptions are corrected as
follows.
Details on the main circuit terminals
Use terminal P3 only when a brake resistor is connected.
[Incorrect]
Terminal
symbol
Brake resistor connection for FR-A820-
P3, PR
00770(15K) to 01250(22K), or FR-
A840-00470(18.5K) to 01800(55K)
P/+, N/-
Brake unit connection
Brake unit connection for FR-A820-
P3, N/-
00770(15K) to 01250(22K), or FR-
A840-00470(18.5K) to 01800(55K)
[Correct]
Terminal
symbol
Brake resistor connection for FR-A820-
P3, PR
00770(15K) to 01250(22K), or FR-
A840-00470(18.5K) to 01800(55K)
P/+, N/-
Brake unit connection
Terminal connection diagrams
In the terminal connection diagrams, the wiring of the optional brake unit is corrected as follows.
[Incorrect]
FR-A820-00770(15K) to 01250(22K),
FR-A840-00470(18.5K) to 01800(55K)
DC reactor
(FR-HEL)
Jumper
Earth
(Ground)
P1
Terminal name
Terminal name
Brake resistor
Brake unit
(Option)
R
P/+
P3
PR
N/-
Inrush
current
limit circuit
Terminal function description
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), multifunction regeneration
converter (FR-XC), 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, FR-HC2, or FR-XC, 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.
Terminal function description
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), multifunction regeneration
converter (FR-XC), or DC power supply (under DC feeding mode).
[Correct]
FR-A820-00770(15K) to 01250(22K),
FR-A840-00470(18.5K) to 01800(55K)
DC reactor
(FR-HEL)
Jumper
Earth
(Ground)
P1
2
Brake resistor
Brake unit
(Option)
R
P/+
P3
PR
N/-
Inrush
current
limit circuit
BCN-C22005-969
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