YASKAWA GA800 Series - Main Circuit Terminal Functions; Wire Selection

Electrical Installation
3
3.3 Main Circuit Wiring
YASKAWA SIEPC71061737B GA800 Drive Technical Reference 71
◆ Main Circuit Terminal Functions
Refer to Table 3.2 for the functions of drive main circuit terminals.
Table 3.2 Main Circuit Terminal Functions
Terminal Name
Function
Model
2004 - 2082 2110 - 2138 2169 - 2415 -
4002 - 4044 4060 - 4168 4208 - 4414 4477 - 4720
R/L1
Main circuit power supply input
To connect a commercial
power supply.
S/L2
T/L3
U/T1
Drive output To connect a motor.V/T2
W/T3
B1
Braking resistor connection -
To connect a braking resistor
or braking resistor unit.
B2
+2
• DC power supply input
(+1 and -)
• DC reactor connection
(+1 and +2)
-
To connect peripheral
devices, for example:
• DC power input
• Braking unit
• DC link choke
Note:
Remove the jumper
between terminals +1
and +2 to connect a DC
link choke.
+1
DC power supply input (+1
and -)
• DC power supply input (+1 and -)
• Braking unit connection (+3 and -)
-
+3 -
• 200 V: D class grounding (ground to 100 Ω or less)
• 400 V: C class grounding (ground to 10 Ω or less)
To ground the drive.
Note:
Use terminals B1 and - to connect a CDBR-type control unit to drive models 2004 to 2138 and 4002 to 4168 that have built-in braking
transistors.
◆ Wire Selection
Select the correct wires for main circuit wiring.
Refer to Main Circuit Wire Gauges and Tightening Torques on page 216 for wire gauges and tightening torques as
specified by European standards.
Refer to Wire Gauge and Torque Specifications for UL Listing on page 72 for wire gauges and tightening torques as
specified by UL standards.
■ Wire Selection Precautions
WARNING! Electrical Shock Hazard. Make sure that the protective ground wire conforms to technical standards and local safety
regulations. The IEC/EN 61800-5-1:2007 standard specifies that you must wire the power supply to automatically de-energize when
the protective ground wire disconnects. You can also connect a protective ground wire that has a minimum cross-sectional area of
10 mm
2
(copper wire) or 16 mm
2
(aluminum wire). If you do not obey the standards and regulations, it can cause serious injury or
death. The leakage current of the drive will be more than 3.5 mA in drive models 4414 to 4720.
Think about line voltage drop before selecting wire gauges. Select wire gauges that drop the voltage by 2% or less of
the rated voltage. Increase the wire gauge and the cable length when the risk of voltage drops increases. Calculate line
voltage drop with this formula:
Line voltage drop (V) = × wire resistance (Ω/km) × wiring distance (m) × motor rated current (A) × 10
-3
.
■ Precautions during Wiring
• Use terminals B1 and - to connect braking units to drives that have built-in braking transistors (models 2004 to
2138 and 4002 to 4168). Use terminals +3 and - to connect braking units to drives that do not have built-in braking
transistors.