Mitsubishi Electric FR-A700 Series Installation Manuallines page 5

General precaution
•
The bus capacitor discharge time is 10 minutes. Before starting wiring or inspection, switch power OFF, wait for
more than 10 minutes, and check for residual voltage between terminal P/+ and N/- with a meter etc., to avoid a
hazard of electrical shock.
Environment
•
Before installation, check that the environment meets following specifications.
Pr.570 = "2" (Initial value):
-10°C to +50°C (non-freezing)
Pr.570 = "102":
Surrounding air
-10°C to +40°C (non-freezing)
temperature
Ambient humidity 90%RH or less (non-condensing)
Storage temperature -20°C to +65°C
Ambience Indoors (No corrosive and flammable gases, oil mist, dust and dirt.)
Maximum 1000m above sea level for standard operation. After that derate by 3% for every extra
500m up to 2500m (91%).
Altitude, vibration
2.9m/s
CAUTION
• Install the inverter on a strong surface securely and vertically with bolts.
• Leave enough clearance and take cooling measures.
• Avoid places where the inverter is subjected to direct sunlight, high temperature and high humidity.
• Install the inverter on a non-flammable wall surface.
Peripheral devices
•
Check the inverter model of the inverter you purchased. Appropriate peripheral devices must be selected according
to the capacity. Refer to the following list and prepare appropriate peripheral devices:
Motor Output (kW)
*1
355
560
*1 Motor Output (kW) in the above table indicates values when using the 4-pole standard motor with power supply voltage of 690VAC 60Hz.
*2 Select the MCCB according to the power supply capacity. Install one MCCB per inverter.
*3 Magnetic contactor is selected based on the AC-3 class. The electrical durability of magnetic contactor is 500,000 times. When the
magnetic contactor is used for emergency stop during motor driving, the electrical durability is 25 times.
CAUTION
 When the inverter capacity is larger than the motor capacity, select an MCCB and a magnetic contactor according to the
inverter model and cable and reactor according to the motor output.
 When the breaker on the inverter primary side trips, check for the wiring fault (short circuit), damage to internal parts of the
inverter, etc. Identify the cause of the trip, then remove the cause and power on the breaker.
2
or less at 10 to 55Hz (directions of X, Y, Z axes)
Applicable Inverter Model
FR-A770-355K-79
FR-A770-560K-79
INSTALLATION OF THE
INVERTER AND INSTRUCTIONS
5cm
Measurement
position
Moulded Case Circuit Breaker
(MCCB) or Earth Leakage
*2
Circuit Breaker (ELB)
(NF or NV type)
500A
800A
Measurement
position
Inverter
5cm
5cm
Input Side
Magnetic
Contactor
*3
401A
611A
MCCB INV IM
MCCB INV IM
2