Delta VFD9A0MS43ANSHA User Manual

Chapter 7 Optional AccessoriesMS300 (High Speed Model)
7-17
DC reactor
Delta Part #
Rated Current
(Arms)
Saturation current
(Arms)
DC reactor
(mH)
A
(mm)
B
(mm)
C
(mm)
D
(mm)
E
(mm)
Dimension
(mm)
DR018D0311 18 30.6 3.119 117 127 142 95 106 12*8
DR024D0233 24 41.4 2.338 117 134 143 95 113 12*8
DR032D0175 32 54 1.754 136 131 170 111 108 12*8
DR038D0147 38 64.8 1.477 153 143 186 125 120 12*8
DR045D0124 45 77.4 1.247 153 149 186 125 126 12*8
Length of Motor Cable
1. Leakage current to affect the motor and counter measurement
Due to larger parasitic capacitances in longer motor cables, the leakage current increases.
This can activate the over-current protection and incorrect display of current. In worst case the drive
can be damaged.
If more than one motor is connected to the AC motor drive, the total motor cable length is the sum of
the cable length from AC motor drive to each motor.
For 460V series AC motor drives, when an overload relay is installed between the drive and the motor
to protect motor from overheating, the connecting cable must be shorter than 50m.
However, the overload relay could still malfunction. To prevent this, install an AC output reactor
(optional) to the drive and/or lower the carrier frequency setting (Pr. 00-17).
2. Surge voltage to affect the motor and counter measurement
When a motor is driven by a PWM signal from an AC motor drive, the motor terminals can easily
experience surge voltages (dv/dt) due to the IGBT switching and the cable capacitance. When the
motor cable is very long (especially for the 460V series), surge voltages (dv/dt) may reduce motor
insulation quality. To prevent this situation, please follow the rules below:
a. Use a motor with enhanced insulation
b. Connect an output reactor (optional) to the output terminals of the AC motor drive
c. Reduce the motor cable length to the values below
The suggested motor shielded cable length in the following table complies with IEC 60034-17,
which is suitable for motors with a rated voltage ≤ 500 VAC and with an insulation level of ≥ 1.35 kV
p-p
230V 1-phase
Model
Rated current
(ND) (Arms)
Without AC reactor With AC reactor
Shielded Cable
(meter)
Non-shielded
cable (meter)
Shielded Cable
(meter)
Non-shielded
cable (meter)
VFD7A5MS21ANSHA
VFD7A5MS21ENSHA
VFD7A5MS21AFSHA
3.2 50 75 75 115
VFD11AMS21ANSHA
VFD11AMS21ENSHA
VFD11AMS21AFSHA
5 50 75 75 115

Delta VFD9A0MS43ANSHA Specifications

General

Brand	Delta
Model	VFD9A0MS43ANSHA
Category	Controller
Language	English