3.8 Main Circuit Wiring
This section describes the functions, specifications, and procedures required to safely and properly wire the main circuit in
the drive.
NOTICE: Do not solder the ends of wire connections to the drive. Soldered wiring connections can loosen over time. Improper wiring practices
could result in drive malfunction due to loose terminal connections.
NOTICE: Do not switch the drive input to start or stop the motor. Frequently switching the drive on and off shortens the life of the DC bus
charge circuit and the DC bus capacitors, and can cause premature drive failures. For the full performance life, refrain from switching the
drive on and off more than once every 30 minutes.
u
Main Circuit Terminal Functions
Table 3.2 Main Circuit Terminal Functions
Voltage Class
Three-Phase 200 V
Class
Three-Phase 400 V
Class
Function
Page
Drive Model
2
o
0028 to 2
o
0248
4
o
0011 to 4
o
0414
Terminal
Type
R/L1, S/L2, T/L3
Main circuit power supply input
Connects line power to the drive
U/T1, V/T2, W/T3
Drive output
Connects to the motor
p1, n1
Momentary power loss recovery unit input
DC voltage terminals that connect to a
momentary power loss recovery unit
100 Ω or less
10 Ω or less
Grounding terminal
u
Protecting Main Circuit Terminals
n
Insulation Caps or Sleeves
Use insulation caps or sleeves when wiring the drive with crimp terminals. Take particular care to ensure that the wiring does
not touch nearby terminals or the surrounding case.
n
Main Circuit Protective Cover
Close the protective cover after wiring the main circuit terminals on drive models 2
o
0028 to 2
o
0081 and 4
o
0011 to 4
o
0077.
Figure 3.23 Main Circuit Protective Cover (Drive Models 2
o
0028 to 2
o
0081 and 4
o
0011 to 4
o
0077)
Attach the protective covers after wiring the main circuit terminals and p1, and n1 terminals on drive models 2
o
0104 to
2
o
0248 and 4
o
0096 to 4
o
0414.
3.8 Main Circuit Wiring
66
YASKAWA TOEPYAIUPW01A YASKAWA AC Drive - U1000 iQpump Matrix Drive User Manual
