Omron SYSDRIVE 3G3FV-*-CUE Installation Manual page 60

Installation
• Input Transformers for 12-pulse Rectification
Refer to the following table to select the input transformer for 12-pulse rectification. Refer to the mini-
mum currents on the secondary winding side in the table when selecting two standard transformers
used in combination for 12-pulse rectification.
Inverter model
3G3HV-
B4185
B4220
B4300
B4370
B4450
B4550
• 12-pulse Rectification Effect
Harmonics are suppressed effectively with 12-pulse rectification as shown in the following table.
Harmonic suppres-
sion method
No reactor
12-pulse rectification 5.43
H Connecting the Braking Resistor
• Connect the braking resistor as shown in the following diagram.
• When using a Braking Resistor for the 3G3FV, set L8-01 to "1" (i.e., overheating protection of the brak-
ing resistor) and set L3-04 to "0" (i.e., no decelerating stall prevention) or "2" (braking function with stall
prevention).
• For the 3G3HV, set n079 (braking resistor overheating protection) to "1" and n070 (no decelerating
stall prevention) to "0."
Caution The braking resistor's connection terminals are B1 and B2. Do not connect any other
!
terminals. Connecting any terminals other than B1 or B2 can cause the resistor to
overheat, resulting in damage to the equipment.
Input voltage (V)
I/O voltage ratio: 1:1
380 to 460 V ±10%/
±
380 to 460 V±10% at
50/60 Hz
5th har- 7th har-
monic monic harmon-
65 41 8.5
5.28 5.40
Inverter
www.dadehpardazan.ir 88594014-15
Minimum current on
the primary winding
side (A)
52
66
82
100
120
180
Harmonic generation rate (%)
11th 13th 17th
harmon- harmon-
ic ic
7.7 4.3
5.96 0.69
Braking resistor
Chapter 2
Minimum current on
the secondary winding
side (A)
26
33
41
50
60
80
19th 23th
harmon- harmon-
ic ic ic
3.1 2.6
0.19 1.49
25th
har-
monic
1.8
1.18
2-41