Mitsubishi Electric FR-A700 Technical Manual page 22

Protective
functions
Protective/warning
function
Warning functions
Surrounding air temperature
Ambient humidity
Storage temperature∗2
Atmosphere
Altitude/vibration
*1 The braking torque indicated is a short-duration average torque (which varies with motor loss) when the motor alone is
decelerated from 60Hz in the shortest time and is not a continuous regenerative torque. When the motor is decelerated from
the frequency higher than the base frequency, the average deceleration torque will reduce. Since the inverter does not contain
a brake resistor, use the optional brake resistor when regenerative energy is large. A brake unit (FR-BU2) may also be used.
*2 Temperatures applicable for a short time, e.g. in transit.
*3 As the 0.75K or less are not provided with the cooling fan, this alarm does not function.
*4 When using the inverters at the surrounding air temperature of 40°C or less, the inverters can be installed closely attached
(0cm clearance).
*5 This protective function does not function in the initial status.
Overcurrent during acceleration, overcurrent during constant speed, overcurrent during deceleration, overvoltage
during acceleration, overvoltage during constant speed, overvoltage during deceleration, inverter protection thermal
operation, motor protection thermal operation, heatsink overheat, input phase loss ∗5, output side earth (ground) fault
overcurrent at start∗5, output phase loss, external thermal relay operation ∗5, PTC thermistor operation∗5, parameter
error, PU disconnection, retry count excess ∗5, CPU fault, brake transistor alarm, inrush resistance overheat, analog
input error, stall prevention operation, output current detection value exceeded ∗5, safety circuit fault
Fan alarm∗3, overcurrent stall prevention, overvoltage stall prevention, PU stop, parameter write error, regenerative
brake prealarm ∗5, electronic thermal relay function prealarm, maintenance output ∗5, undervoltage, operation panel
lock, password locked, inverter reset, safety stop
-10°C to +50°C maximum (non-freezing) (-10°C to +40°C for totally-enclosed structure feature) ∗4
90%RH or less (non-condensing)
-20°C to +65°C
Indoors (without corrosive gas, flammable gas, oil mist, dust and dirt etc.)
Maximum 1000m above sea level, 5.9m/s
15
2
or less at 10 to 55Hz (directions of X, Y, Z axes)
SPECIFICATIONS
1