11-9
Item
Specifications
Remarks
C
on
tr
ol
PID control
• PID adjuster for process control and that for dancer control
• Switchable between forward and reverse operations
• Low liquid level stop function (pressurized operation possible before low liquid level stop)
• PID command: Keypad, analog input (from terminals [12], C1, V2), RS-485 communications
• PID feedback value: Analog input (from terminals [12], C1, V2)
• Alarm output (absolute value alarm, deviation alarm)
• PID output limiter
• Integration reset/ho
Auto search for idling motor speed
• Estimates the speed of the motor running under no load and starts the motor without stopping it. (Motor electric constant needs
tuning: Offline tuning)
*1 to * 2 and *6
Automatic deceleration
• If the DC link bus voltage or calculated torque exceeds the automatic deceleration level during deceleration, the
inverter automatically prolongs the deceleration time to avoid overvoltage trip.
（
It is possible to select forcible deceleration actuated wh
• If the calculated torque exceeds automatic deceleration level during constant speed operation, the inverter avoids overvoltage
trip by increasing the frequency.
Deceleration characteristic
(improving braking ability)
• The motor loss is increased during decel. to reduce the regenerative energy in the inverter to avoid overvoltage trip. *1
Automatic energy saving operation
• The output voltage is controlled to minimize the total sum of the motor loss and inverter loss at a constant speed.
Overload prevention control
• If the ambient temperature or IGBT joint temperature increases due to overload, the inverter lowers the output
frequency to avoid overload.
Off-line tuning
• Rotary type and non-rotary type are available for tuning the motor constant.
On-line tuning
• Performs tuning while the motor is rotating in order to cover the motor speed fluctuation caused by the temperature rise of the
motor.
Cooling fan ON/OFF control
• Detects inverter internal temperature of the inverter and stops the cooling fan when the temperature is low.
• The fan control signal can be output to an external device.
Setting 2nd motor
• Switchable among the two motors
• Code data for four kinds of specific functions can be switched
（
even during operation
）
.
It is possible to set the base frequency, rated current, torque boost, and electronic thermal slip compensation as the data for 1st to
2nd motors.
Universal DI
• The status of external digital signal connected with the universal digital input terminal is transferred to the host controller.
Universal DO
• Digital command signal from the host controller is output to the universal digital output terminal.
Universal AO
• The analog command signal from the host controller is output to the analog output terminal.
Speed control
• Notch filter for vibration control, *7
Synchronous operation
• Synchronous control drives two or more shafts of a conveyer while keeping their positions in synchronization. *7
Preliminary excitation
• Excitation is carried out to create the motor flux before starting the motor. *6 and*7
Zero speed control
• The motor speed is held to zero by forcibly zeroing the speed command. *7
Servo lock
• Stops the inverter and holds the motor in stop position. *7
Torque control *6, *7
• Analog torque command input
• Speed limit function is provided to prevent the motor from becoming out of control.
Rotation direction control
• Preventing reverse rotation
• Preventing forward rotation
Preventing condensation in motor
Battery Operation
• When the inverter is stopped, current is automatically supplied to the motor to keep the motor warm and avoid condensation.
• The battery operation enables the undervoltage inverter to run the elevator with a battery for moving the cage to the nearest floor.
Di
sp
la
y
Run/stop
Speed monitor
(set frequency, output frequency, motor speed, load shaft speed, line speed, and speed indication with percent) Output current [A],
output voltage [V], calculated torque, input power [HP], PID reference value, PID feedback value, PID output
Inverter life warning
• Life judgment of the main circuit capacitor, electrolytic capacitor on printed circuit board, and cooling fan
• Life warning information can be output to an external device.
• Ambient temperature: 40˚C, Load rate: inverter rated current 100% (LD type: 80%)
Cumulative running hours
• Displays the inverter cumulative running hours, integrated power, cumulative motor running hours, and the number of operation
start times (of each motor).
• Outputs the warning when the maintenance time or the number of start times has exceeded the preset
Trip mode
• Displays the cause of trip.
Light-alarm
• Shows the light-alarm display [L-AL].
Running or trip mode
• Trip history: Saves and displays the cause of the last four trips (with a code).
• Also saves and displays the detailed data recorded on occurrence of the last four trips.
