Mitsubishi Electric FR-A820-00046 Instruction Manual page 108

Connection of stand-alone option units
Remove the screws in terminals PR
and PX and remove the jumper.
FR-A820-00630(11K),
FR-A840-00310(11K), 00380(15K)
Connect the brake resistor across
terminals P/+ and PR.
Jumper
Brake resistor
Tab. 2-43: Connection of the external brake resistor (2)
NOTES For FR-A820-00490(7.5K) or lower and FR-A840-00250(7.5K) or lower, the jumper across terminals
PR and PX must be disconnected before connecting the dedicated brake resistor. Not doing so
may damage the inverter.
A brake resistor cannot be used with options such as brake units, high power factor converters,
and power regeneration converters.
2 - 78
FR-A820-00340(5.5K), 00490(7.5K), FR-A840-00170(5.5K), 00250(7.5K)
Terminal P/+
Terminal PR
Do not remove the jumper across
terminals P/+ and P1 except when
connecting a DC reactor (FR-HEL).
Connect the brake resistor across
terminals P/+ and PR. (The jumper
should remain disconnected.)
Jumper
Terminal P/+
Terminal PR
Terminal PX
FR-A820-00770(15K) to 01250(22K),
FR-A840-00470(18.5K), 00620(22K)
Connect the brake resistor across
terminals P3 and PR.
Brake resistor
I002404E
Installation and wiring
Brake resistor
Terminal P3
Terminal PR
I002403E
Terminal PR
I002405E