Inverters-FREQROL-F Series -FREQROL-F800- Functions Ideal for Fans and Pumps
Optimum Inverter Capacity Selection
Multiple rating
The rating can be selected between the two types (LD (light duty) or SLD (superlight duty)) depending on the load of the fan/pump to be used. The optimum inverter capacity can be selected suitable for the motor to be used.
For the 200 V class 90K or higher and the 400 V class 75K or higher, a motor with one-rank higher capacity can be combined.
| Load | Rating | Overload current rating |
|---|---|---|
| Superlight duty | SLD rating | 110% 60 s, 120% 3 s (inverse-time characteristics) at surrounding air temperature of 40°C |
| Light duty | LD rating | 120% 60 s, 150% 3 s (inverse-time characteristics) at surrounding air temperature of 50°C |
Further Enhanced PID Control
System cost reduction
PID multiple loops (two loops)
Two PID operation units are available in the inverter. The inverter can perform PID control of the motor operation and control the external equipment at the same time. The system cost can be reduced because no external PID controller is required for controlling the external equipment.
Direct setting of the PID set point
The PID set point can be set directly from the operation panel. The setting can be easily changed at hand.
Visibility improvement (Option)
With the optional LCD operation panel (FR-LU08), the unit can be changed from "%" to other easy-to-see units.
Maintenance and adjustment is facilitated by using a familiar unit of air volume, temperature, etc. for indication.
Avoidance of rapid acceleration/deceleration using PID action
PID pre-charge function
Before PID action, the water flow to the pipe is controlled by operating the motor at a constant speed until the measured value (pressure, etc.) reaches the set level. This function is used to avoid rapid acceleration/deceleration caused by starting the PID action while the pipe is empty, and prevent a water hammer action, etc.
Water volume control with multiple pumps
Multi-pump function
By controlling the pumps connected in parallel (up to four pumps) by the PID control by one inverter, water volume, etc. can be adjusted.
One of the connected pumps is driven by the inverter. Other pumps are driven by commercial power supply. The number of pumps to be driven by commercial power supply is automatically adjusted according to the water volume.
Pump water volume control
PID input pressure control
In order to prevent air intake and cavitation inside the pump, the pump inlet pressure can be controlled so that there is no water shortage.
Operating Status Monitoring
Detection of mechanical faults
Load characteristics measurement function
The speed/torque relationship is stored while no fault occurs. By comparing the present load status with the stored load characteristics, out-of-range warnings can be output if applicable.
Mechanical faults such as clogging of the filter or breakage of the belt can be easily detected, and maintenance is facilitated.
Cleaning of fans and pumps
Cleaning function
Foreign matter on the impellers or fans of pumps can be removed by repeating forward/reverse rotation and stopping of the motor. (Use this function when a back flush does not pose a problem.)
This function can be also automatically started when the result of load characteristics measurement is out of range (overload).
Smooth Restart
Automatic restart after instantaneous power failure / flying start function
After an instantaneous power failure, the operation is restartable from the coasting motor speed. With the advanced flying start function, the operation can be smoothly started from low speed.
Keep Running during Flying Start Operation
Regeneration avoidance function
The operation frequency is automatically increased to prevent the regenerative overvoltage fault from occurring. This function is useful when a load is forcibly rotated by another fan in the duct.
PLC Control with an Inverter
PLC function in the inverter
- Parameters and setting frequency can be changed at the program. Control programs can be created in sequence ladders using the inverter setup software (FR Configurator2).
- Inverter control such as inverter operations triggered by input signals, signal output based on inverter operation status, and monitor output can be freely customized based on the machine specifications.
- All machines can be controlled by the inverter alone, and control can also be dispersed.
- Time-based operation is possible by using in combination with the real-time clock function (when using an optional LCD operation panel (FR-LU08)).
Compatibility with Various Systems
Compatibility with various networks
It supports BACnet® MS/TP as standard, as well as Mitsubishi inverter protocol and MODBUS®RTU (binary) protocol.
Communication options are also available for major network protocols such as CC-Link, CC-Link IE Field Network, LONWORKS®, FL remote, PROFIBUS-DP V0, and DeviceNet™.
FR-F800-E
The CC-Link IE Field Network Basic is supported, so the network can be created easily. The inverter's status can be monitored and the parameters can be set via Internet. (MODBUS/TCP and BACnet/IP are also supported.)
Simplified external equipment
The CA-type inverters are available. For the CA type, the monitor output terminal FM/CA operates as terminal CA (analog current output 0 to 20 mA), not as terminal FM (pulse train output). An external converter is not required.
(The factory setting is different for the CA type and the FM type.)
Mechanical Resonance Suppression
Speed smoothing control
Vibration caused by mechanical resonance can be reduced.
(Enabled only under V/F control.)
Extended Functions
Support for up to three types of options
Three types of plug-in options can be attached.
The functions of the inverter can be extended through network. For example, additional I/O terminals can be used.