Main Circuit Terminals; Details On The Main Circuit Terminals - Mitsubishi Electric FR-A800 Series Instruction Manual

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
*1 Available when used in the common bus regeneration mode
54
2. INSTALLATION AND WIRING
2.5 Main circuit terminals
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Terminal name
AC power input
Inverter output
Power supply for the control
circuit
Brake resistor connection for FR-
A820-00630(11K) or lower, or
FR-A840-00380(15K) or lower
Brake resistor connection for FR-
A820-00770(15K) to 01250(22K),
or FR-A840-00470(18.5K) to
01800(55K)
Brake unit connection
Brake unit connection for FR-
A820-00770(15K) to 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
DC reactor connection for FR-
A820-03800(75K) or higher, or
FR-A840-02160(75K) or higher
Built-in brake circuit connection
Earth (ground)
search engine
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), multifunction regeneration converter (FR-
*1
XC) , or 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 the high power factor
converter (FR-HC2), multifunction regeneration converter (FR-XC)
or 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), 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
*1
the FR-CV, FR-HC2, or FR-XC
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.
, always use either terminal P/+ or P3
Refer to
page
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*1
,
77
97
100
109
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67