YASKAWA
TOEPC7106170YB YASKAWA AC Drive GA500 Installation & Primary Operation
175
*2
Use terminals B1, B2, -, +1, and +2 to connect options to the drive.
WARNING
Fire Hazard. Only connect factory-recommended devices or circuits to drive
terminals B1, B2, -, +1, and +2. Do not connect an AC power supply lines to these terminals.
Incorrect wiring can cause damage to the drive and serious injury or death from fire.
*3
For circuit protection, the main circuit is separated from the surface case that can touch the main circuit.
*4
The control circuit is a Safety Extra-Low Voltage circuit. Separate this circuit from other circuits with
reinforced insulation. Make sure that the Safety Extra-Low Voltage circuit is connected as specified.
*5
Reinforced insulation separates the output terminals from other circuits. Users can also connect circuits that
are not Safety Extra-Low Voltage circuits if the drive output is 250 Vac 1 A maximum or 30 Vdc 1 A
maximum.
*6
WARNING
Electrical Shock Hazard. Do not ground the shield of the control wiring to
the protective ground terminal. It does not comply with technical standards and local codes and
can cause serious injury or death.
■
Main Circuit Wire Gauges and Tightening Torques
WARNING
Electrical Shock Hazard. Only connect factory-recommended devices or circuits to
drive terminals B1, B2, -, +1, and +2. Do not connect AC power to these terminals. Incorrect wiring can
cause damage to the drive and serious injury or death from fire.
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.
