The universal frequency inverter EPA Unidrive SP is the evolution of the Unidrive Classic with new features, additional parameters and a more flexible expandability of the drive system. The internal algorithms with their ultra-short cycle times are ringing in a new era with respect to the dynamics of a drive system.
The EPA Unidrive SP works either in the operating modes “open-loop”, “closed-loop vector” or “Servo”, that means it can even default evaluate the feedback signals of an incremental encoder. There are currently 14 different feedback systems (z. B. SinCos, Hiperface, etc.) supported. There are more than 600 parameters to adjust the drive system which are clearly summarized in groups. All devices have a built-in brake chopper and can simultaneously accommodate three optional modules (eg Profibus). The max. output frequency is 3000 Hz.
Technical details:
- 5 operation modes (open-loop, open-loop vector, closed-loop vector, servo,regenerativ)
- Optional keypad, LCD or LED style
- Option modules (für Profibus, DeviceNet, CANOpen, Interbus usw.)
- Smartcard for programming and parameter / makro copying
- Standards and recommendations IEC6100-6-2 & EN61800-3, EN61800-3, IEC61131-2, IEC61131-3, EN954-1 Kat. 3, EN50178, UL508C, EN81-1
- Plug-in terminals allow clean separation of the power and control circuits for EMC compliant Berieb
- Hole through mounting in IP54 available
- Heavy duty and normal load operation (200% overload with 4-pole 3-phase asynchronous and servo motor possible)
- Advanced Line Voltage: 200VAC to 600VAC, 50 / 60Hz
- DC link coupling allows common propulsion and braking
- Separate 48VDC power supply as a safety function for elevators
- Separate 24VDC power supply for supplying the control electronics and the bus line
- Fast scan times of 250μs for the speed setting and 83μs for the torque command
- High performance with enhanced control parameters for positioning tasks
- Selectable gain factors for single and multi-motor drives
- Online autotuning now infinitely
- Speed feedback chooseable
- Switching from open-loop to closed-loop during operation is possible
- Automatic torque correction during acceleration
- Specifying a precision torque
- Maximum output frequency 3000 Hz (open-loop) and 1200Hz (closed-loop)
- 16 kHz switching frequency for whisper-quiet drives
- Second motor parameter set with high-speed switching can be activated
- Support of the serial transmission of data via motor encoder
- 14 different speed feedback systems are supported (incremental encoder, SinCos (single and multi-turn, Hiperface and EnDat, SSI and Grey Code). An additional option module can be inserted for synchronization and positioning tasks. An encoder simulation can be output in different formats. 4 different feedback systems can simultaneously are processed.
- All models have the same control terminals, the digital inputs and outputs comply with the standard IEC61131-2. The high-resolution analog input has 16 bit plus presage (in closed-loop).
- analog inputs: speed setpoint 250μs sampling, two further inputs with 4ms sampling
- analog outputs: Two outputs with 4 ms sampling
- digital inputs: seven inputs with 4ms sampling, two Freeze / trigger / limit inputs with 250μs sampling
- Digital Outputs: Three outputs with 4 ms sampling
- Built-in EMC filter for short motor cables
- Option cards enable gateway solutions
- Application module makes it possible to synchronize several Unidrive SP
- NO motor contactor needed a control input Unidrive SP to EN954-1 Cat. 3 takes over this function