MGI M4000E series, Instruction Manual

Page: 43 / 215

32
INSTALLATION AND WIRING
2.2.5 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)
Connect a brake resistor across terminals P (+) and PR. Connect a dedicated brake
resistor only.
(For the locations of terminals P (+) and PR, refer to the terminal block layout (page
22).)
The external brake resistor should be as listed in the following table. Selected the rated
power of the brake resistor according to the brake duty.(The rated power indicated
below assumes that the brake resistor duty is 10%)
(2) Connection of the power factor improving DC reactor
Inverter size Brake resistance Reference rated power at brake duty of 10%
001 1000 ohm minimum 180W minimum
002 500 ohm minimum 360W minimum
003 350 ohm minimum 500W minimum
005 200 ohm minimum 800W minimum
007.5 150 ohm minimum 1200W minimum
010 110 ohm minimum 1600W minimum
Connect the power factor
improving DC reactor between
terminals P1-P (+). In this case,
the jumper connected across
terminals P1-P (+) must be
removed. Otherwise, the reactor
will not function.
Note: 1. The wiring distance should be within 5m (16.40 feet).
2. The size of the cables used should be equal to or larger than that of the
power supply cables (R (L
1
), S (L
2
), T (L
3
)).
PR
Brake resistor
P1 P(+) N(-)
P1
Remove the jumper.
PR
<Connection method>
P
(+)
N
( )
DC reactor
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