PowerFlex 700 VFD
Hi everyone,
The Allen Bradley PowerFlex 700 is an AC drive designed to control three-phase induction motors. It has a wide range of horsepower ratings and can be used for a variety of applications, including speed and torque control. It also offers specific features and parameters for industries such as lifting, oil wells, and speed and positioning.
The Motor Control options for the PowerFlex 700 include V/Hz control, Sensorless Vector Control, and Vector Control with FORCE Technology. It also has the ability to communicate using Common Industrial Protocol and has an optional User Interface HIM. It is available in enclosures rated IP00, IP20, IP54, and Flange Mount.
Additional features include the ability to control speed and torque with and without encoder feedback, position indexing, and speed profiling, parameter linking functionality, TorqProve for lifting applications, adjustable voltage for non-motor loads, a position regulator, and a 16-step indexing table (with encoder feedback). It also has custom firmware options including Pump Off for oil well applications and Cascade fan/pump. It is certified by UL, cUL, IEC (Designed to Meet), CE, C-Tick, ATEX, RINA (Frames 0-6), ABS (Frames 0-6), Lloyd's Register (Frames 0-6) and SEMI F47 (Frames 0-6).
Normal Duty and Heavy Duty Operation refer to the amount of overload current a drive can handle. In Normal Duty, the drive can handle 110% for 60 seconds and 150% for 3 seconds, compared to a Heavy Duty application where the drive can handle 150% for 60 seconds and 200% for 3 seconds. These percentages refer to the connected motor rating.
Low Speed Operation refers to the operation of the drive when the output frequency is below 4 Hz. At these speeds, the IGBT duty cycle causes heat to build up rapidly in the device. The thermal manager will increase the calculated IGBT temperature and take corrective action to prevent damage. When the drive is in current limit, it reduces the output frequency to reduce the load. However, this strategy is not effective for constant torque loads as reducing the output frequency does not lower the current. In this case, the thermal manager increases the calculated losses in the power module to track the worst case IGBT.
Droop is a feature used to "shed" load in applications with a soft coupling of two motors. The master drive regulates the speed, and the follower uses droop to avoid opposing the master. The input to the droop block is the commanded motor torque, and the output reduces the speed reference. The amount of speed reduction is set by the user in Droop RPM @ FLA. For example, if the setting is 50 RPM and the drive is running at 100% rated motor torque, the droop block would subtract 50 RPM from the speed reference.
The Allen Bradley PowerFlex 700 AC drive has a feature that logs faults, or error events, into a queue. This queue is called the "fault queue" and it records the most recent fault events that occur. Each recorded event includes a fault code, which is a numerical identifier for the specific error, and a fault time of occurrence. The fault code also includes an associated text which describes the fault. The fault queue is a first-in, first-out (FIFO) queue, which means that the most recent entry will always be at the top of the queue. If the queue is full, the oldest entry will be discarded. The fault queue is also saved in nonvolatile storage, which means that it will retain its contents even if there is a power loss or the drive is turned off. This allows for easy retrieval of fault history for troubleshooting and maintenance.
- PowerFlex 700S 700H Drives Hardware Service Manual (pdf)
- PowerFlex 700 - Power Interface Board and SMPS Board Replacement (pdf)
- PowerFlex 70 700 Reference Manual - Vol 1 (pdf)
- PowerFlex 70 700 Parameters (pdf)
- PowerFlex 700 AC Drive Product Profile (pdf)
- PowerFlex 700 AC Drive Sample Specification (pdf)
- PowerFlex 700 AC Drive Technical Data (pdf)
- PowerFlex 700 Active Converter - Power Module (pdf)
- PowerFlex 700 Dynamic Brake Kit (pdf)
- PowerFlex 700 Encoder Installation Instructions (pdf)
- PowerFlex 700 Standard Control User Manual (pdf)
- PowerFlex 70EC 700VC Reference Manual (pdf)
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+ PowerFlex 700 Fault Codes 1 >>
+ PowerFlex 700 Fault Codes 2 >>
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