Main Circuit Wiring - YASKAWA L1000A Technical Manual

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 drive.
NOTICE: Do not carelessly connect parts or devices to the drives braking transistor terminals. Failure to comply could result in damage
to the drive or braking circuit. Carefully review instruction manual TOBPC72060000 when connecting a braking option to the drive.
NOTICE: Equipment Hazard. Comply with proper wiring practices. The motor may run in reverse if the phase order is backward,
causing incorrect elevator direction movement. Connect motor input terminals U, V and W to drive output terminals U/T1,V/T2, and W/
T3. The phase order for the drive and motor should match.
Note: 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.
◆ Main Circuit Terminal Functions
Terminal
200 V
2A0018 to 2A0075
Class
Model
CIMR-L
400 V
4A0009 to 4A0039
Class
R/L1
S/L2
T/L3
U/T1
V/T2
W/T3
B1
B2
+2 • DC link choke connection
(+1, +2) (remove the
+1
shorting bar between +1 and
+2)
–
• DC power supply input
(+1, –)
+3
◆ Wire Gauges and Tightening Torque
Use the tables in this section to select the appropriate wires and crimp terminals.
Gauges listed in the tables are for use in the United States.
Note: 1. Wire gauge recommendations based on drive continuous current ratings using 75°C 600 Vac vinyl-sheathed wire assuming ambient
temperature within 40°C and wiring distance less than 100 m (328 ft.).
2. Terminals B1, B2, +1, +2, and +3, are for connecting a DC link choke, braking resistor or DC power supply. Do not connect other
nonspecific devices to these terminals.
• Consider the amount of voltage drop when selecting wire gauges. Increase the wire gauge when the voltage drop is
greater than 2% of motor rated voltage. Ensure the wire gauge is suitable for the terminal block. Use the following
formula to calculate the amount of voltage drop:
Line drop voltage (V) =
• Refer to instruction manual TOBP C720600 00 for braking transistor option or braking resistor option wire gauges.
• Use terminal +1 and the negative terminal when connecting a braking transistor option, regenerative converter, or a
regen unit.
• Refer to UL Standards Compliance on page 419
62
Table 3.2 Main Circuit Terminal Functions
Type
2A0085, 2A0115
4A0045, 4A0060
Main circuit power supply input
Drive output
Braking resistor
• DC power supply input
(+1, –)
Not available
For 200 V class: 100 Ω or less
For 400 V class: 10 Ω or less
× wire resistance (Ω/km) × wire length (m) × current (A) × 10
3
for information on UL compliance.
YASKAWA ELECTRIC SIEP C710616 38A YASKAWA AC Drive L1000A Technical Manual
2A0145 to 2A0415
4A0075 to 4A0260
Not available
Not available
• DC power supply input
(+1, –)
• Braking transistor
connection (+3, –)
Function
Connects line power to the drive
Connects to the motor
Available for connecting a braking resistor or a
braking resistor unit option
For connection
• of the drive to a DC power supply (terminals +1
and – are not EU/CE or UL approved)
• of dynamic braking options
• of a DC link choke
Grounding terminal
-3
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