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Products Variable Frequency Drives Low Voltage Drive General Purpose Variable Frequency Drives
FC808 Multi & Modular Drives
FC808 Multi & Modular Drives
FC808 Multi & Modular Drives
FC808 1
FC808 2
FC808 4
FC808 Multi & Modular Drives

FC808 series is a modular drive solution featuring a unified rectifier unit and multiple variable-frequency inverter units sharing a common DC bus. It meets high-standard industrial drive requirements such as those for single machinery with multiple drive points and continuous production line systems. The series integrates seamlessly with your existing automation systems, providing solutions for diverse drive tasks across industries including printing, packaging, textile, rubber, lithium battery, woodworking, and CNC machine tools

 



Features

Compared to multiple single drive units a multidrive solution offers long list of benefits.

Modularity: From small to large

VFD multidrives normally incorporate a modular design. The rectifier(s), dc link and inverter(s) can be sized partly independently by following basic dimensioning rules. Such flexibility allows the manufacturer to find the best solution for specific demands.

- Improved energy efficiency

With a multidrive solution you always save more energy compared to multiple single drives.

Having multiple motors in an application where one machine is driving and at the same time another machine is braking it is possible to regenerate the power through the dc link. Therefore, losses in both rectifiers and both input transformers can be saved.

However, also when all machines are driving at the same time you can reach some energy savings. In electric machines (transformers, motors) the efficiency scales up with increasing rated power. Therefore, one larger input transformer will always have slightly better efficiency than two individual smaller transformers.

2. Reduced footprint

Using a VFD multidrive concept you always save some footprint. The savings can range from small (e.g. one module less) to significant.

Besides reduced footprint of the multidrive itself compared to several single drives you save substantial space (and cost) on input transformer and switchgear.

3. Reduced rectifier and transformer size

Multidrive concept, as already mentioned, is perfectly suited to use power regenerated from one machine operated at given instant as generator and feed it to another machine operated as a motor. In metals applications both machines usually have the same power rating. Consequently, their power balances nicely and there is very small power consumption from the grid just to cover losses of inverters and motors. Consequently, the user benefits from smaller and cheaper rectifier and transformer. Savings are also on the interconnecting cables (smaller cross section and/or less cables in parallel). 

4. Reduced investment cost

Capital expenditures (CAPEX) of a multidrive are lower than equivalent sum of single drives.

(i) multidrive itself is more cost effective than the sum of single drives for the same total power

(ii) rectifier of the multidrive may, depending on the application, be dimensioned much smaller compared to the sum of power ratings of individual rectifiers

(iii) one input transformer instead of multiple transformers

(iv) one input circuit breaker instead of multiple ones

(v) lower cost for transporation

(vi) lower installation cost

(vii) lower commissioning cost

5. Reduced operation cost

Operational expenditure (OPEX) is lower compared to individual drives due to better efficiency, resp. smarter power management. The maintenance cost is lower and the maintenance tasks are less time consuming. Certain components experience less cyclic loading due to dc bus regeneration leading to longer lifetime / slower aging.

– reduced power consumption

– reduced contractual installed (reserved) power

6. Network harmonics better under control

With a multidrive the topic of grid harmonics can be handled easier and much more cost effective.

(i) Higher pulse number

– Having just one rectifier it is much more economical to reach higher pulse number and reduce harmonic distortion. You will also need just one multi-winding transformer instead of multiple of them.

(ii) Lower rectifier power demand

Multidrive solutions often benefit from lower rectifier power. IN general, the voltage and current distortion decreases with reduced power.

(iii) Easier implementation of harmonic filter

If a grid side harmonic filter is required (rare case though), it is much easier to install it on one multidrive instead of dealing with multiple drive units.

Advantages of multidrives 

– Improved energy efficiency by further reducing the power consumption

– Reduced footprint on VFD level and especially on system level

– Reduced investment cost (equipment, transportation, installation)

– Reduced operational cost

– Easier system integration

– Realization of special applications / new concepts

Specifications

ITEM

FC808 Multi-Drive High Performance Drives

Basic function

Maximum frequency

Vector control: 0~599Hz

V/F control: 0~3200Hz

Carrier frequency

0.5kHz~16kHz

The carrier frequency   can be automatically adjusted based on the load features.

Input frequency resolution

Digital setting:0.01Hz

Analog setting:   maximum frequency×0.025%

Control mode

Voltage/Frequency control (V/F)

Sensorless flux vector control (No PG)

Closed loop vector   control (Have PG)

Startup torque

G Type:0.5Hz/150%(No PG);

P Type:0.5Hz/100%

Speed range

1:100(No PG)

Speed stability accuracy

±0.5%(No PG)

Torque control accuracy

±5%(Have PG)

Overload capacity

G type: 60s for 150% of the rated current, 3s for 180% of the rated   current.

P type: 60s for 120%   of the rated current, 3s for 150% of the rated current

Torque boost

Fixed boost

Customized boost   0.1%–30.0%

V/F curve

Straight-line V/F curve

Multi-point V/F curve

N-power V/F curve   (1.2-power, 1.4-power, 1.6-power,1.8-power, square)

V/F separation

Two types: complete separation; half separation

Ramp mode

Straight-line ramp

S-curve ramp

Four groups of   acceleration/deceleration time with the range of 0.0–6500.0s

DC braking

DC braking frequency: 0.00 Hz to maximum frequency

Braking time: 0.0-100.0s

Braking action   current value: 0.0%–100.0%

JOG control

Jog frequency range:0.00Hz~50.00Hz.  JOG acceleration/deceleration   time0.0s~6500.0s。

Onboard Multiple preset speeds

It implements up to 16 speeds via the simple PLC function or by input   terminal states

Onboard PID

It realizes process-controlled closed loop control system easily.

Auto voltage regulation (AVR)

It can keep constant output voltage automatically when the mains   voltage changes.

Over-voltage/ Over-current stall control

The  current and voltage are limited automatically during the running    process so as to avoid frequent tripping due to  over-voltage/over-current.

Rapid current limit

It helps to avoid frequent over-current faults of the inverter.

Torque limit and torque control

It can limit the torque automatically and prevent frequent over-current   tripping during the running process.

Individualized   function

High performance

Control of asynchronous motor is implemented through the   high-performance current vector control technology.

Instantaneous stop doesn’t stop

The load feedback energy compensates the voltage reduction so that the   AC drive can continue to run for a short time.

Timing control

Timing range 0.0Min~6500.0Min

Communication methods

Modbus RS-485, Modbus TCP, EtherCAT, Profibus-DP, Profinet, CANopen

 Operation

Running command channel

Given by the panel, control terminals,

Serial communication port, can be switched by many ways

Frequency source

10  kinds of frequency   source, given by digital analog voltage, analog  current, Pulse, serial port.   can be switched by many ways

Auxiliary frequency source

There are ten auxiliary frequency sources. It can implement fine tuning   of auxiliary frequency and frequency synthesis

Input terminals

5 digital input terminals, one of which supports up to 100 kHz   high-speed pulse input;

1 analog input terminal, supports 0-10V voltage input or 4–20 mA   current input.

Output terminal

1 digital output terminal

1 relay output terminal

1 analog output terminal :that supports 0–20 mA current output or 0–10   V voltage output

Display and operation panel

LED display

It displays the parameters.

Key locking and

It can lock the keys partially or completely and define the

function selection

function range of some keys so as to prevent mis-function.

Protection mode

Motor  short-circuit detection at power-on, input output phase loss    protection, over-current protection, over-voltage protection, under  voltage   protection, overheat protection and overload protection.

Environment

Installation location

Indoor, avoid direct sunlight, dust, corrosive gas, combustible gas,   oil fog, steam, drip or salt.

Altitude

Lower than 1000 m (Lower the grades when using higher then 1000m)

Ambient temperature

-10°C ~40°C (Lower the grades if the ambient temperature is between 40°C and   50°C)

Humidity

Less than 95%RH, without condensing

Vibration

Less than 5.9m/s2(0.6g)

Storage temperature

-20℃~+60℃