198
YASKAWA
TOEPC7106170YB YASKAWA AC Drive GA500 Installation & Primary Operation
Note:
•
The recommended wire gauges are based on drive continuous current ratings with 75 °C (167 °F) 600 V class
2 heat-resistant indoor PVC wire. Assume these conditions:
–
Ambient temperature: 40 °C (104 °F) maximum
–
Wiring distance: 100 m (3281 ft) maximum
–
Normal Duty rated current value
•
Refer to the instruction manual for each device for recommended wire gauges to connect peripheral devices or
options to ter1, +2, -, B1, and B2. Contact Yaskawa or your nearest sales representative if the
recommended wire gauges for the peripheral devices or options are out of the range of the applicable gauges
for the drive.
Wire Selection Precautions
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
•
Refer to
“
Yaskawa AC Drive Option Braking Unit, Braking Resistor Unit Instruction
Manual (TOBPC72060001)
”
for information about wire gauges and tightening torques
to connect braking resistor units.
•
Use ter1 and - to connect a regenerative converter or regenerative unit.
WARNING
Fire Hazard. Do not connect a braking resistor to ter1 or -. Use terminals
B1 and B2 for the braking resistor connections. If you connect a braking resistor to the incorrect terminals,
it can cause damage to the drive and braking circuit and serious injury or death.
Screw Shape
These tables use icons in
to show the shapes of the screw heads.
Table 17.4 Icons to Identify Screw Shapes
Icon
Screw Shape
Phillips/slot combo (+/-)
Slotted (-)
Hex socket cap (WAF: 5 mm)