Fuji Electric FVR-E11S-7EN

9-6
Item Detail specifications
Overload
protection
Inverter protection electronic thermal overload relay
Overvoltage
protection
An excess in the DC link circuit voltage (approx. 400 Vdc for 200V class, approx.
800Vdc for 400V class) is detected for inverter protection.
Overcurrent
protection
The inverter is protected against an overcurrent caused by an overload on the
output side.
Surge
protection
The inverter is protected against a surge voltage penetrating between the power
supply cable of the main circuit and the ground.
Undervoltage
protection
Voltage drop (approx. 200 Vdc for 200V class, approx. 400Vdc for 400V class ) in
the DC link circuit voltage is detected to stop the inverter.
Overheat
protection
The inverter is protected against failure and overload of the cooling fan.
Short-circuit
protection
The inverter is protected against an overcurrent caused by a short-
circuit on the
output side.
Ground fault
protection
The inverter is protected against an overcurrent caused by ground fault in the
output wiring.
* Detection when starting
Motor protection Electronic thermal overload relays protect general purpose motors and Fuji's
inverter motor.
The thermal time constant can be adjusted to 0.5 to 10.0 min.
Second electronic thermal overload relay can be pr
ovided. (Switching with external
signal)
Braking resistor
protection
Upon an overheat of the damping resistor (external unit), discharging operation
and inverter operation stop
Stall prevention
(simple torque
limit)
• When the output current exceeds the limit during acceleration, the frequency
change is stopped to avoid overcurrent stop.
• When the output current exceeds the setting during constant speed operation,
the frequency is decreased to maintain an almost constant torque.
• When the DC voltage exceeds the limit during deceleration, the frequency
change is stopped to avoid overvoltage stop.
Input phase loss
protection
The inverter is protected against phase loss in the input voltage.
Output phase loss
protection
An unbalance in the impedance o
f the output circuit is detected to output an alarm.
(Error during tuning only)
Protection
Auto reset The number of retries and wait time can be set for the alarm stop.
Installation
location
• Indoors
• Places without corrosive gases, flammable gases or dust
(degree of pollution: 2)
• Places without direct sunlight
Ambient
temperature
-10 to +50 °C
Relative humidity 5 to 95% RH (without condensation)
Altitude 1000 m Max. (Atmospheric pressure 86 to 106 kPa)
Vibration 3mm
9.8m/s
2
2m/s
2
1m/s
2
2 to 9 Hz
9 to 20 Hz
20 to 55 Hz
55 to 200 Hz
Storage
temperature
-25 to +65 °C
Environment
Storage humidity 5 to 95% RH (without condensation)