3.8 Main Circuit Wiring
YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual 75
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 lifetime 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.
Main Circuit Terminal Functions
Table 3.2 Main Circuit Terminal Functions
Note: Use terminal B1 and - when installing the braking unit (CDBR type) to the drives with built-in braking transistor (2A0004 to
2A0138, 4A0002 to 4A0072).
Wiring Fuses for the CIMR-A4A0930 and 4A1200
NOTICE: If a fuse is blown or an equipment for residual current monitoring/detection (RCM/RCD) is tripped, check the wiring and the
selection of the peripheral devices to identify the cause. Contact YASKAWA before restarting the drive or the peripheral devices if the
cause cannot be identified.
A fuse should be installed on the input side to protect drive wiring and prevent other secondary damage. Wire the fuse so
that leakage current in the upper controller power supply will trigger the fuse and shut off the power supply.
Select the appropriate fuse from Table 3.3.
Table 3.3 Input Fuses (CIMR-A4A0930 and 4A1200)
Terminal Type
Function Page
200 V
Class
Model
CIMR-A
2A0004 to 2A0081 2A0110, 2A0138 2A0169 to 2A0415 –
400 V
Class
4A0002 to 4A0044 4A0058, 4A0072 4A0088 to 4A0675 4A0930, 4A1200
R/L1
Main circuit power supply input Connects line power to the drive
61
S/L2
T/L3
R1-L11
not available
Main circuit power
s
upply input
Connects line to power to the drive.
Remove the shorting bars connecting R/L1-R1/L11,
S/L2-S1/L21, T/L3-T1/L31 when using 12-phase
rectification.
S1-L21
T1-L31
U/T1
Drive output Connects to the motor 61
V/T2
W/T3
B1
Braking resistor not available
Available for connecting a brak
ing resistor or a
braking resistor unit option
427
B2
+2 • DC reactor
connection (+1, +2)
(remove the shorting
bar between +1 and
+2)
• DC power supply
i
nput
(+1, –)
not available
For connection
• of the drive to a DC power supply (terminals +1
and –
are not UL approved)
• of dynamic braking options
• of a DC reactor
432
+1
• DC power supply
inp
ut
(+1, –)
• DC power supply input (+1, –)
• Braking unit connection (+3, –)
–
+3 not available
– Grounding terminal 82
Voltage Class
Model
CIMR-A
Selection Input Fuse (example)
Input Voltage
(V)
Current (A)
Pre-arc
I
2
t (A
2
s)
Model Manufacturer Rating
Pre-arc
I
2
t (A
2
s)
Three-Phase
400 V Class
4A0930 480 1200 140000 to 3100000 CS5F-1200
Fuji Electric
AC500 V, 1200 A 276000
4A1200 480 1500 320000 to 3100000 CS5F-1500 AC500 V, 1500 A 351000
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