Rhymebus RM6F5 series, Operation Manual

Page: 37 / 195

Chapter 2 Installation and Confirmation
37 2
2-3-6 Wiring Cautions and Specifications
a.
Wiring connection between drive and motor due to the variance of the
rated power causes the variance of current leakage. The setting of the
switching frequency, rated power, and cable length is listed in the
below table.
Cable length
Rated power
10m 20m 30m 50m 100m
100m
above
1/2~5HP 10KHz 7.5KHz 5KHz 2.5KHz 800Hz 800Hz
7.5~10HP 10KHz 7.5KHz 5KHz 2.5KHz 800Hz 800Hz
15~30HP 7.5KHz 5KHz 2.5KHz 2.5KHz 800Hz 800Hz
40~75HP 5KHz 5KHz 2.5KHz 2.5KHz 800Hz 800Hz
100~700HP 2.5KHz 2.5KHz 2.5KHz 800Hz 800Hz 800Hz
The setting of switching frequency is determined by F_081
b.The wiring length between drive and motor must keep as short as
possible. The parasitic capacitance effect is minor within 10 meters.
The drive should install an AC reactor (ACL) on the side of drive output
terminals U/T1,V/T2,W/T3 and decrease the switching frequency if the
wiring length is over 30m.
c. If the altitude over than 1000m , The relationship between drive
’s rated
current and altitude are shown as below figure.
Altitude (m)
60%
0 1000 2000 3000 4000
Percentage
of the rated
current of
drive
70%
90%
80%
100%
d.Recommend wire size and Molded Case Circuit Breaker(MCCB)
F_081
=0
Switching
frequency
800Hz
1. Do Not adjust the setting value of switching frequency
(F_081) of 75HP above drives while the drive is
running.
2. Do Not adjust the setting value of switching frequency
(F_081) of 75HP above drives while the drive is
running.
=1 2.5KHz
=2 5KHz
=3 7.5KHz
=4 10KHz
=5 12.5KHz
=6 15KHz