Nidec Unidrive M600 Series User Manual

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74 Unidrive M Regen Design Guide
Issue Number: 4
4.7 Regen input filter configuration
The Unidrive M input stage filtering arrangement consists of multiple components including an EMC filter and switching frequency filter (SFF).
The SFF is made up from a switching frequency filter inductor and capacitor(s). The standard Regen input filtering configuration consists of separate
EMC and SFF filter components, a more compact solution is available that combines both the EMC filter and switching frequency filter components
into a single package. The combined filter can simplify installation and provide a compact Regen solution.
4.7.1 Standard Regen input filter
The standard Unidrive M Regen solution requires both an EMC filter and a switching frequency filter which comprises an inductor and capacitor(s).
The following diagram shows the standard arrangement. When referring to the switching frequency filter capacitance, this can consist of either a
single 3 phase capacitor or dual 3 phase capacitors.
Figure 4-19 Standard Unidrive M Regen input filter arrangement
PE
UVW
L1 L2 L3 PE
L1
L2
L3
PE
PE
L1
L2
EMC
filter
K2
F1 F2 F3
K1
V1
V2
V3
V4
V5 V6
L1 L2 L3
L1 L2 L3
L1 L2 L3
L1 L2 L3
L1 L2 L3
L1 L2 L3
Aux.2
AC Supply
Power-up
Connections
AC Supply
Connections
Aux.1
C1
PE
Regen
Inductor
Switching
Frequency
filter
capacitor(s)
Switching
Frequency
filter
inductor
Unidrive M
Regen
F4
F5
F6
F7
F8
F9

Nidec Unidrive M600 Series Specifications

General

Brand	Nidec
Model	Unidrive M600 Series
Category	DC Drives
Language	English