Mitsubishi Electric FR-A760 Series Instruction Manual page 49

Connection of stand-alone option units
FR-A760-00120
1) Connect the brake resistor across terminals P/+ and PR.
1) Connection of Brake Resistor
Terminal P/+
Terminal PX
Brake resistor
FR-A760-00220, 00330
Connect the brake resistor across terminals P/+ and PR.
FR-A760-00220
Jumper *
Brake resistor
⋅ Do not remove a jumper across terminal P/+ and P1 except when connecting a DC reactor.
When the regenerative brake transistor is damaged, the following sequence is recommended to prevent overheat
and burnout of the brake resistor.
<Example 1>
MC
Power
Supply
T
F
OFF
ON
MC
OCR
Contact
MC
38
Terminal PR
Terminal P/+
Terminal PR
Thermal
relay
(OCR)
Inverter
Brake resistor
R/L1 P/+
PX
S/L2
T/L3 PR
FR-A760-00330
Jumper
*
Brake resistor
<Example 2>
R
Power
Supply
T
F
OFF
ON
MC
MC
Terminal PR
Terminal P/+
Thermal
relay
Inverter
MC
(OCR)
R/L1 P/+
PX
S/L2
T/L3 PR
B
C
OCR
Contact
Brake resistor
R