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发布时间: 2018 - 04 - 11
Technical features:1. Wide voltage range inputPower voltage: -15% - 10%, 47 Hz - 63 Hz; provided with under-voltage underclocking output function that extends the applicable range of power voltage to -30% (e.g. extending the applicable range of a 380 V VFD to 266 V - 440 V); 2. High disturbance resistance Pulse group tests: ± 4,800 VStatic (air discharge): 8,000 VStatic (contact discharge): 6,000 VProvided with EMI circuit + lightning protection design3. Phase-phase and phase-to-earth short circuit protectionAny phase-phase short circuit protection 4. Anti-corrosion treatment8 µm nickel plating, and three layers of British conformal coating for key parts;5. Power source of control signals:  External power supply of +10 V and +24 V, both provided with shor...
发布时间: 2015 - 09 - 16
Technical features> Provided with an open-loop vector control permanent magnet synchronous motor, easy to wire and highly accurate in revs control, reducing on-site faults; > High dynamic responses, rapidly responding to the given value of speed while guaranteeing the stability of output revs, which allows the system to catch up with the load changes timely, thus increasing the operation efficiency of the system;> Premium overcurrent and overvoltage resistance;> The oscilloscope function of the background monitoring software monitors the real-time operation status of the VFDs for on-site commissioning;> Parameter copying function of the keyboard;> The PWM overmodulation improves the utilization of busbar voltage and increases the output voltage of VFDs, hence is applicable to cases in...
发布时间: 2015 - 05 - 20
Technical features          1. So compact with a width, height and depth of 8.6 cm, 14.5 cm and 12 cm respectively only;       2. The panel supports external access that allow copying of parameters;       3. The standard RS485 interface constitutes an independent VFD network, making it possible to set the VFD as a master or slave for master-slave control;       4. Impulse/analog input and output channels;       5. 16 segments of speed control;       6. Multiple setting channels for running frequency/commands;       7. Provided with output terminals for disconnecting relays,...
发布时间: 2015 - 07 - 14
Technical features Unique suitability to applications that require waterproofing and dust-proofing or that are of serious pollution;> Unique metal enclosure for perfect heat dissipation;> Employing advanced surface powder coating process to provide select color and an elegant appearance;> Phosphorized metal plates provide good anti-rust and -corrosion performance;> Provided with IP54 fans for steady and reliable performance;> Input voltage: 3 AC 380 V ± 15%;> Input frequency: 47 - 63 Hz; power factor: ≥95%;> Control methods: Non-PG vector control and V/F control, where for V/F control, three profiles, i.e. straight line, polyline and multiple power, are available; > Running commands source: given through panels, terminals and RS485 communication;> Frequency giving source: given t...
发布时间: 2015 - 05 - 20
Technical features> Fast response and high starting torque: for better vibration control on starting;> Low torque ripple for more stable running;> Compact structure design and optional built-in braking units (for 30 kW and lower, braking units of standard configuration);> High overload resistance (3 s for 200% of rated loads). Perfect overvoltage suppression when applied in a punching machine;> Smart commissioning: smart setting of V/F profile that doesn’t need professionals for complex commissioning, saving manpower and time;> Compatible with synchronous motors: significantly conserves energy if combined with synchronous motors. Consumes the least power in case of equivalent unit torque;> Convenient human–machine interaction, real-time monitoring of key parameters, and LED + LCD dual-disp...
发布时间: 2015 - 05 - 20
Technical features       1.2.1 Employs high-performance current vector control, making it possible for induction motors to start with high torque.       V/F control:      1 Hz 150% torque (speed regulation range 60:1)      Open-loop vector control:  0.5 Hz 150% torque (speed regulation range 100:1)       Closed-loop vector control:  0 Hz 180% torque (speed regulation range 1,000:1)1.2.2 Various parameter adjustment modes  Static self-adjustment: best suitable to the commissioning where motors are connected with handling machines;  Rotating self-adjustment: best suitable applications where...
发布时间: 2015 - 04 - 16
Technical parametersInstructions of keyboard indicator lamps Indicator lampsNameMeaningUnit indicationHzFrequency indicator lampThe unit of currently displayed parameter is Hz (Hertz).ACurrent indicator lampThe unit of currently displayed parameter is A (Ampere).VVoltage indicator lampThe unit of currently displayed parameter is V (volt).Hz + ARevs indicator lampThe unit of currently displayed parameter is R/MIN (revolution/min).A + VPercentage indicator lampsThe unit of currently displayed parameter is % (percent).Hz + VMPa indicator lampsThe unit of currently displayed parameter is MPa (mega Pascal).Status indication(MON)Indicator lamps of command sourceOff: controlled through the keyboard.  On: controlled through the terminals.  Flashing: controlled through...
发布时间: 2015 - 05 - 20
Technical features  1. Usable under large grid fluctuation;  2. Provided with protection functions such as short circuit, low voltage, overvoltage, quick-acting fuses, overheating, etc.;  3. The braking IGBTs are ensured to work within the saturation zone.  Technical parametersModel:   CDBU300-XXXA-4 seriesFor VFDsAC power supply380 VPower0.75 kW - aboveOutput featuresMax. braking currentRefer to particular models.Activated voltage of braking690 V ± 10 VHysteretic voltage670 V ± 10 VPower supplyU (p+_p-)350 V - 800 VProtectionElectronic thermal relaysIn case of the temperature of cooling fins of the braking unit exceeds 85 °C, the protection is activated, the braking unit stops braking, and the malfunction indicator lamp ligh...
发布时间: 2015 - 04 - 09
Technical features     1.  Proprietary kernel encryption          • Proprietary new PLC encryption, eradicating any possibility of cracking.          • Multiple password protection, protecting users’ programs from malicious cracking.     2.  High-speed input          • 6 channels of high-speed counter, 2 channels 200 k + 4 channels 10 k.          • 2 channels of AB phase signal input, multiple settings.          • Built-in 32-digit high-speed comparators.          • Starts when co...
Case Solutions

Solutions of Canworld CDE500 VFDs for construction lifts

日期: 2015-04-03
浏览次数: 616

Industrial application introduction of Canworld VFDs - lifts

Main content

Efficient lifting control performance of Canworld VFDs:
        Overview of control performance
        Overview of control logic
        Safe commissioning steps for a lift system
        Methods and requirements for comfort adjustment

Main features of Canworld lift-dedicated VFDs

Before and after upgrading and using Canworld CDE500 VFDs

 Solutions of Canworld CDE500 VFDs for construction lifts

Efficient lifting control performance of Canworld VFDs - Overview

 

- Dedicated brake control logic controls the brake of the lift to release and actuate in an appropriate timing, significantly improving the reliability and comfort of the lifting system.

- No “weightlessness” feeling at the moment of brake releasing when descending, greatly improving the comfort.

- System safety is ensured through the logic that determines if the output frequency and current have reached the set values simultaneously.

- Wide voltage input range and automatic voltage regulation, which avoid the instability resulted by the voltage change of the grid or locked-rotor due to insufficient output.

- Wide speed regulation range, which fulfills the requirements of high speed under light loads and low speed under heavy loads by the lifting system, improving the working efficiency.

Efficient lifting control performance of Canworld VFDs - control logic

 

Time sequence for brake control logic of CDE500 VFDs:

Solutions of Canworld CDE500 VFDs for construction lifts 


1.  The VFD receives the running command and starts to output.

2.  If the output current is larger than “brake release current (EA.02)” and the output frequency reaches “brake release frequency (EA.01)”, and the two aforesaid conditions have been met and lasted for “brake release delay time (EA.03)”, the analog output terminals under the function of “40: brake control” gives an OFF signal to release the brake.

3.  In case the VFD is running at a constant speed under the set frequency of EA.01, when the running time has reached the set value of “stopping time of acceleration with the brake released (EA.04)”, it will accelerate to the set frequency.

4.  The VFD receives the shutdown command and decelerates to “brake actuation frequency (EA.05)”, and then run at a constant speed under this frequency.

5.  When the delay reaches the set value of “waiting time for output signal of brake actuation (EA.06)”, the analog output terminals under the function of “40: brake control” gives an ON signal to actuate the brake.

6.  When the delay reaches the set value of “waiting time for shutdown with the brake actuated (EA.07)”, the VFD will block the output and shut down.

Efficient lifting control performance of Canworld VFDs - safe commissioning

Safe commissioning steps for a lift system

To avoid any danger or accident during the system commissioning of a lift, please follow the commissioning procedure below: 

Solutions of Canworld CDE500 VFDs for construction lifts

A typical example of unsafe commissioning: performing full-load high speed mode immediately after no-load high speed mode.

Efficient lifting control performance of Canworld VFDs - comfort

Methods and requirements for comfort adjustment:

The key to comfort adjustment is setting the brake actuation/release frequency and each interval.

1.  The setting of brake actuation and release are separate. In case that the brake is actuated, the lift will remain still.

2.  If the lift ascends obviously at the moment of brake release, reduce the release frequency appropriately; while if the lift descends obviously, increase it.

3.  If the lift descends obviously at the moment of brake actuation, increase the actuation frequency appropriately.

4.  Properly set the stopping time of acceleration with the brake released and waiting time for shutdown with the brake actuated to realize the comfort during running. The stopping time of acceleration with the brake released shall be greater than the time of the mechanical act of brake release, and the waiting time for shutdown with the brake actuated shall be greater than the time of the mechanical act of brake actuation.

5.  The frequency of brake actuation and release should not be too low.

Main features of Canworld lift-dedicated VFDs

Range of voltage level

220 V (208 V - 240 V)

380 V (264 V - 480 V)

480 V (380 V - 550 V)

690 V (450 V - 750 V)

1,140 V (800 V - 1,310 V)

Range of power level:

1.5 kW - 1,000 kW, all series.

Temperature:

Temperature range for storage: -25°C - 75°C

Temperature range for running: -10°C - 65°C

Altitude:

Operational when no greater than 1,000 m;

When higher than 1,000 m, for every 100 m higher, the rated conditions shall be tightened by 1%;

When higher than 4,000 m, please consult the vendor.

For further information, please refer to User Manual for CDE500 Series.


Case / Case
2015 - 04 - 03
点击次数: 616
Industrial application introduction of Canworld VFDs - liftsMain contentEfficient lifting control performance of Canworld VFDs:        Overview of control performanc...
2015 - 04 - 03
点击次数: 591
I. Parameter setting table for constant-pressure water supply testsFunction codeNameSet valueFunction codeNameSet valueb2.01Numerically set frequency5 (PID)E5.05Engineering unit1 (pressure)C0.01Functi...
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