Yaskawa A1000 6-Phase/12-Pulse Input - Manual (Page 22)

R1/L11 S1/L21 T1/L31
R/L1 S/L2 T/L3 U/T1 V/T2 W/T3
+3 －
Figure 15 Models 4T0515o and 4T0675o Terminals
u 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.
n Main Circuit Terminal Functions
Table 4 Main Circuit Terminal Functions
Terminal Type
Function
Model 4T0058o and 4T0072o 4T0088o to 4T0675o
R/L1
Main circuit power supply input Not available Connects line power to the drive
S/L2
T/L3
R1/L11
S1/L21
T1/L31
U/T1
Drive output Connects to the motor V/T2
W/T3
B1
Braking resistor Not available
Available for connecting a braking resistor or a
braking resistor unit option B2
⊖
Not available
Braking unit connection
( ⊕3 and ⊖)
Only for connecting dynamic braking options
⊕3
10 Ω or less Grounding terminal
Note: Note: DC power supply input is not available for 6-Phase/12-Pulse Input models.
n Main Circuit Fuses
The 6-Phase/12-Pulse drive requires fuses to be installed on each of the 6 input phases between the 6-Phase/12- Pulse
transformer and the drive. Select fuses from Table 13 or Table 14 according to drive model to maintain standards compliance.
3 Electrical Installation
22 YASKAWA TOEP YAIA1U 02A YASKAWA AC Drive – A1000 6-Phase/12-Pulse Input Installation Manual