MHT258a (Engl.)10-7
(3) External braking resistor connection
Terminal assignment : see 6.3.3.
(2)
Ｍ
ＭＭ
Ｍ
ＰＧ
ＰＧＰＧ
ＰＧ
(3)
(4)
(1)
Ｌ１
Ｌ１Ｌ１
Ｌ１
Ｌ２
Ｌ２Ｌ２
Ｌ２
Ｌ３
Ｌ３Ｌ３
Ｌ３
ＤＢ
ＤＢＤＢ
ＤＢ
Ｐ１
Ｐ１Ｐ１
Ｐ１
Ｐ＋
Ｐ＋Ｐ＋
Ｐ＋
Ｎ
ＮＮ
Ｎ
Ｌ１Ｃ
Ｌ１ＣＬ１Ｃ
Ｌ１Ｃ Ｌ２Ｃ
Ｌ２ＣＬ２Ｃ
Ｌ２Ｃ
Motor
(1) Resistor
(2) Power supply for control circuit
(3) For control input terminal
(4) Battery
(5) 1.25[mm
2
] cables. Cable length should be within 10 [m]
(6) 0.5[mm
2
] cables for NTC-thermistor. See 6.2.5.
10.7 DC reactor
(1) DC reactor application
Provide and connect an DC reactor in any of the following cases.
(a) Power supply capacity is large
When the power supply capacity exceeds 500 [kVA] (*), the input current of the amplifier becomes large at the time of power on, and there is
a possibility where the rectifying diodes of the amplifier are damaged.
Note : (*) Cable length of 20 [m] with specified cable diameter size.
(b) Power supply voltage is unbalanced
Connect an DC reactor if the power supply voltage unbalance rate is 3% or higher.
Unbalance rate of power supply voltage [%] =
−
−
×
Max voltage V Min voltage V
phase average voltage V
.[].[]
[]3
100
(c) Suppression of higher harmonics
Higher harmonics current is generated in the amplifier.
DC reactor suppresses voltage distortion in the power supply system.
(2) Connection
Connect an DC reactor to the primary (power supply) side of the amplifier.
External braking resistor
(6)
(5)
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