Frequency Inverter (Cabinet Type), AS700 Series
The AS700 series of cabinet type frequency inverters is designed for use in industrial hoisting within large portal hoists, gantry cranes, shore bridges, and other cranes as well as in process control machines within the paper making, metallurgy, mining, cement, energy, chemical, petroleum and natural gas industries. These flexible AC driven inverters have a wide range of power and voltage up to 690V and a variety of programmable settings to suit different applications.The cabinet inverter is configured with an energy regenerative power supply unit which ensures a long service life and energy-efficient operation and uses vector control technology which enables quick conversion between electric and power generation modes for high performance.
Features
1. S3i - n*S3i and S4i - n*S4i control board located outside the module
2. Circuit board with coating
3. Extendible programming I/O port
4. Profibus DP communication
5. Input electric isolation
6. AC contactor at incoming line side
7. Built-in LCL filter
8. Du/dt filter (nx in outline dimension)
9. Optimal design for cabinet installation
10. Compact design
11. Cooling fan and capacitor with long service life
12. DC fuse, with the base or DC fuse switch charging circuit
13. Cabinet door/top components with IP21-IP54 protection level
| Power connection | Rang of voltage and power | 3-phase U3N: 3-phase U5N: 3-phase U7N: |
| Input frequency | ||
| Connection frequency | Once per min or less (normal condition) | |
| Power factor | CosΦ1=1 (fundamental wave) CosΦ=0.99 (all) | |
| Efficiency (rated power) | 97% (IGBT power supply unit) | |
| Motor connection | Voltage > 500V unit | 3-phase output voltage |
| Frequency | (0...100Hz using du/dt filter) | |
| Low-intensity magnetic point | ||
| Ambient conditions | Operating ambient temperature | -10 ℃ (frost-free)... 40℃ |
| Storage temperature | ||
| Transportation temperature | ||
| Relative humidity | 5~95% RH, free of condensation, corrosion, water drip | |
| Cooling method | Dry, clean air | |
| Storage | IEC60721-3-1, Class 1C2 (chemical gas) Class 1S2 (solid particle) | |
| Transportation | IEC60721-3-2, Class 2C2 (chemical gas) Class 2S2 (solid particle) | |
| Operation | IEC60721-3-3, Class 3C1/3C2* (chemical gas) Class 3S2 (solid particle) C=chemical active substance, S=mechanical active substance, *coating circuit board | |
| Altitude | Max 1000m (included), 100% load (without capacity reducing) 1000...4000 and above: 1% reduced for rise of 100m | |
| Shock-proof performance EN50178/EN60068-2-6 | Within 3...30Hz: amplitude 1mm (peak) Within 30...150Hz: max acceleration 1G | |
| Protection level | IP21 | |
| Conformance standard EMC (following EN1800-3 Standard) | CE, low voltage clauses 73/23/EEC, including amending clauses 93/68/EEC, mechanical clauses 98/37/EC, EMC clauses 89/336/EEC, including amending clauses 93/68/EEC, quality guarantee system ISO 9001 and environment system ISO 14001 Optional till Rx series in AS700-02 series for non-restricted sales in second environments Optional configuration with input current lower than 1000A for restricted sales in first environments | |
| Control connection | Analog input voltage | 2 Group 0... 10V (or -10V... 10V lever control), Ri=200kΩ, resolution 0.1%, accuracy±1% |
| Analog input current | 0(4)...20mA, Ri=250Ω differential | |
| Digital input | 8, positive or negative logic: 18...30VDC | |
| Auxiliary voltage | DC24V, ±15%, max 250mA | |
| Output reference voltage | ±10V, ±3%, max load 10mA | |
| Analog output | 2 Group 0 (4) ... 20mA, Ri max 500Ω, resolution 10-digit, accuracy ±2% | |
| Relay output | Three programmable switching relay outputs Switch capacity: 24VDC/8A, 250VAC/8A, 125VDC/0,4A Min switch load: 5V/10mA | |
| Control features | Control method | Speed control torque control function with free switch of two control methods |
| Starting moment | 180% 0Hz (with PG card vector control) | |
| Speed control range | 1:1000 (with PG vector control) | |
| Torque control | CosΦ1=1 (fundamental wave) CosΦ=0.99 (all) | |
| Speed control | Static accuracy: closed-loop, 0.01% of rated speed Dynamic accuracy: closed-loop, 2...4 ms at 100% torque step | |
| Overloading capacity | 1.8x rated output current (i.e. 180% overload) with duration 60s; 2x rated output current (i.e. 200% overload), with duration of 10s | |
| Carrier frequency | 2-8 kHz | |
| Automatic torque compensation | Pre-excitation and starting torque pre-compensation | |
| Moment memory function | Provide about 70% of the memory moment (adjustable) before restarting to avoid slipping | |
| Brake logic control | Reliable band type brake logic control at zero speed, with adjustable time, which avoids large impact current of motor and prevents slipping | |
| Load ratio measurement | Maintain necessary torque required on the load while band type brake is released by sensor measurement through external weights | |
| High speed lift | With output current no larger than rated current of maximum speed of motor, the inverter is running under constant power mode, making the speed exceed the rated speed of motor |
Shanghai STEP Electric Corporation
Shanghai YIXIN International Trade Co., Ltd.
