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Drives Service & Support > Powerflex 755 > Specifications
Protection
| AC Input Overvoltage Trip: | 380/400V: 611V AC 480V: 611V AC |
| AC Input Undervoltage Trip: | 380/400V: 235V AC 480V: 235V AC |
| Bus Overvoltage Trip: | 380/400V: 815V DC 480V: 815V DC |
| Bus Undervoltage Shutoff/Fault: | 380/400V: 333V DC 480V: 333V DC |
| Nominal Bus Voltage (Full Load): | 380/400: 517V DC 480V: 621V DC |
| Drive Overcurrent Trip | |
|
Calculated value, 105% of motor rated to 200% of drive rated |
|
105% of 3 sec. rating (158…210%) |
|
143% of 3 sec. rating (215…287%) |
| Line transients: | up to 6000 volts peak per IEEE C62.41-1991 |
| Control Logic Noise Immunity: | Showering arc transients up to 1500V peak |
| Power Ride-Thru: | 15 milliseconds at full load |
| Logic Control Ride-Thru: | 0.5 seconds minimum, 2 seconds typical |
| Ground Fault Trip: | Phase-to-ground on drive output |
| Short Circuit Trip: | Phase-to-phase on drive output |
Environment
| Altitude: | 1000 m (3300 ft) max. without derating |
| Maximum Surrounding Air Temperature without De-rating: |
Based on drive rating, See bottom of page. |
| Storage Temperature (all const.): | –40 to 60° C (–40 to 140° F) |
| Atmosphere: | Important: Drive must not be installed in an area where the ambient atmosphere contains volatile or corrosive gas, vapors or dust. If the drive is not going to be installed for a period of time, it must be stored in an area where it will not be exposed to a corrosive atmosphere. |
| Relative Humidity: | 5 to 95% non-condensing |
| Shock: Non-operational |
15G peak for 11ms duration (±1.0 ms) |
| Vibration: | 2 mm (0.0787 in.) displacement, 1G peak EN50178 / EN60068-2-6 |
Electrical
| AC Input Voltage Tolerance: | ±10% |
| Frequency Tolerance: | 47-63 Hz. |
| Input Phases: | Three-phase input provides full rating for all drives. Single-phase operation provides 50% of rated current. |
| Displacement Power Factor: | 0.98 across entire speed range. |
| Efficiency: | 97.5% at rated amps, nominal line volts. |
| Maximum Short Circuit Rating: | 200,000 Amps symmetrical. |
| Actual Short Circuit Rating: | Determined by AIC rating of installed fuse/circuit breaker. |
| Maximum Drive to Motor Power Ratio |
Recommended not greater than 2:1 ratio. |
Control
| Method: | Sine coded PWM with programmable carrier frequency. Ratings apply to all drives (refer to the De-rating Guidelines in the PowerFlex Reference Manual). The drive can be supplied as 6 pulse or 12 pulse in a configured package. |
| Carrier Frequency: | Drive rating: 4 kHz Settings: 2, 4, 6, 8, 10, 12 kHz |
| Output Voltage Range: | 0…650 Hz |
| Output Frequency Range: | 0…320 Hz |
| Frequency Accuracy Digital Input: |
Within ±0.01% of set output frequency. |
| Frequency Accuracy Analog Input: |
Within ±0.4% of maximum output frequency. |
| Frequency Control: | Speed regulation - with Slip Compensation 0.5% of base speed across 40:1 speed range 40:1 operating range |
| Speed Control without feedback: | 0.1% of base speed across 120:1 speed range 120:1 operating range 50 rad/sec bandwidth |
| Speed Control with feedback: | 0.001% of base speed across 100:1 speed range 1000:1 operating range 190 rad/sec bandwidth |
| Torque Regulation without feedback: | ±5%, 600 rad/sec bandwidth |
| Torque Regulation with feedback: | ±5%, 2500 rad/sec bandwidth |
| Selectable Motor Control: | Sensorless Vector with full tuning. Standard V/Hz with full custom capability. |
| Stop Modes: | Multiple programmable stop modes including - Ramp, Coast, DC-Brake, Ramp-to-Hold and S-curve. |
| Accel/Decel: | Two independently programmable accel and decel times. Each time may be programmed from 0 to 3600.10 seconds in 0.1 second increments. |
| S-Curve Time | 0…100% of accel/decel time. |
| Intermittent Overload: | 110% Overload capability for up to 1 minute 150% Overload capability for up to 2 seconds |
| Current Limit Capability: | Proactive Current Limit programmable from 20 to 160% of rated output current. Programmable proportional gain. |
| Electronic Motor Overload Protection: |
Class 10 protection with speed sensitive response. Investigated by U.L. to comply with N.E.C. Article 430. U.L. File E59272, volume 12. |
Standards
- CE
- EMC - EN61800-3
- Low Voltage - EN61800-5-1
- UL
- cUL
- C-Tick
- TUV FS
- SEMI F47
- ROHS
Enclosure & Ambient Operating Temperatures
- IP20, NEMA/UL Type 0 = 0-50° C (33-122°F) = All Frames, All Ratings
- IP20, NEMA/UL Type 0 Front/IP66, NEMA UL Type 4X Back/Flange = 0-40° C (33-104°F) = All Frames, All Ratings
- IP54, NEMA/UL Type 12 = 0-40˚ C (32-104˚ F) = Frames 2-5