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3.7 Main Circuit Wiring
3.7
Main Circuit Wiring
This section describes the functions, specifications, and procedures required to safely and properly wire the main circuit
in the converter.
NOTICE: Do not switch the converter input power supply on and off frequently. Frequently switching the converter on and off shortens
the life of the DC bus capacitors, and can cause premature unit failure. For the full performance life, refrain from switching the
converter on and off more than once every 30 minutes.
NOTICE: Do not solder the ends of wire connections to the converter. Soldered wiring connections can loosen over time. Improper
wiring practices could result in converter malfunction due to loose terminal connections.
◆ Main Circuit Terminal Functions
Terminal
200 V Class
Model
400 V Class
R/L1
S/L2
T/L3
r1/ 11
1/ 21
t1/ 31
–
+
◆ Protecting Main Circuit Terminals
Insulation Caps or Sleeves
■
Use insulation caps or sleeves when wiring the converter with crimp terminals. Take particular care to ensure that the
wiring does not touch nearby terminals or the surrounding case.
Insulation Barrier
■
Insulation barriers are packaged with models 4A0270 to 4A0630 to provide added protection between terminals.
Yaskawa recommends using the provided insulation barriers to ensure proper wiring. Refer to
Figure 3.22
for instructions on placement of the insulation barriers.
Figure 3.21
Insulation Barrier
Figure 3.22
58
Table 3.3 Main Circuit Terminal Functions
Type
2A0005 to 2A0130
4A0005 to 4A0630
Main circuit power supply input
Power supply voltage detection inputs
DC voltage output
For 200 V class: 100 Ω or less
For 400 V class: 10 Ω or less
Figure 3.21 Installing Insulation Barriers
Figure 3.22 Locations of the Insulation Barriers
YASKAWA ELECTRIC SIEP C710656 06F YASKAWA Power Regenerative Converter - D1000 Technical Manual
Function
These are the power supply input terminals that connect to
the input reactor.
These terminals are to detect the power supply voltage order
and voltage levels.
These terminals output a DC voltage
Grounding terminal
Page
46
46
–
61
Figure 3.21
and
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