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INSTALLATION AND WIRING
29
2.2.6 Connection of stand-alone option units
The inverter accepts a variety of stand-alone option units as required.
Incorrect connection will cause inverter damage or an accident. Connect and operate
the option unit carefully in accordance with the corresponding option unit manual.
(1) Connection of the dedicated external brake resistor (option)
(Cannot be connected to 0.1K and 0.2K)
Connect a brake resistor across terminals P (+) and PR. Connect a dedicated brake
resistor only.
(For the positions of terminals P (+) and PR, refer to the terminal block layout (page
16).)
PR
P
Brake resistor
(+)
PR
Brake resistor
P1
N
FR-E520-0.4KND, 0.75KND, 5.5KND, 7.5KND
FR-E520-1.5KND to 3.7KND
P
(+)