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The PxtTX acts as a short-time, uninterruptible power supply for DC intermediate circuits, especially protected against suspended particles in the air.
Contact
Michael Koch GmbH
Telefon: +49 7251 96 26-200
| Kriterium | PxtTX |
|---|---|
| Weight | 6.0 kg (stand alone) |
| 9.6 kg (stand alone with 1 energy module) | |
| 13.3 kg (stand alone with 2 energy modules) | |
| Dimensions H x B x T | 297 x 100 x 167 mm (stand alone) |
| 297 x 100 x 276 mm (stand alone with 1 energy module) | |
| 297 x 100 x 385 mm (stand alone with 2 energy modules) | |
| Protection class | IP 20 – closed housing |
| Ambient temperature | -10°C to +65°C (transport, storage) |
| 0°C to +40°C (in operation) | |
| Humidity | ≤ 95% (transport, storage) |
| ≤ 85% (in operation) | |
| Cooling | Heatsink convection. Monitoring heatsink temperature |
| Limitation for installations in elevated areas | < 2000 m NN: No limitations / overvoltage category III |
| > 2000 m NN: reduction of performance / overvoltage category II | |
| Min. starting voltage level for the system (DC link or Energy storage) | Approx. 45 VDC, e.g. to communicate with the system |
| Min. Operating voltage level UZmin | UZStart 180 VDC, e.g. to communicate with the system System ready for operation at UZ > 460 VDC |
| Max. Operating voltage level UZmax | 1000 VDC (IEC) |
| Operation conditions | For start: UZ > UC |
| 24 VDC Eingang | Galvanically isolated For communication tasks with PxtTX without connecting it to DC link or energy storage, e.g. for setting parameters at the desk (Note: not protected against polarity reversal) |
| Energy of integrated capacities | 0 kJ (stand alone) |
| 2 kJ (stand alone with 1 energy module) | |
| 4 kJ (stand alone with 1 energy modules) | |
| Expansion of capacities | Expandable with PxTEX for PxTTX in steps of 2kJ |
| Capacity monitoring | Parameterizable |
| Max. Energy Storage current Ic | 5 A (IEC) continuous |
| 40 A for 3s (Ieff = 5 A continuous current | |
| at tZCycle = 240s / maximum 4 times per hour | |
Max. Power Pmax | 2.25 kW (IEC) continuous PC = PZ |
| Operation frequency level | in operation load-dependent reduction down to 7.5 kHz Manually adjustable up to 18 kHz (with reduction of power) |
| Load monitoring | DC link side and energy storage side (in each case I²t) |
| Connection DC link | Front, top |
| Connection for PxtEX oder NEV | front, bottom |
| Communication | 3 digital In 3 digital Out K-Bus interface for operating data output 4 LEDs SD-Card Reset-button for restart Boot-button for boot loading from SD-Card Option: PXTMX plug-on module for fieldbus communication etc. |
| Visualization | Charging indicator for each Energy module (flashing LED according to voltage level) |
| Firmware-Updates | On Koch company site (Fabrikle) or with SD-Card at customers site |
| Protection | Internal fuses Individual protection of each energy module |
| Precharging circuit | Connection directly to DC link interference-free possible, independent from further precharging circuits |
| Reverse polarity protection | To DC link: In case connecting with reverse polarity PxtTX blocks and disconnects the DC link side from energy storage side |
| Charging protection | To DC link in case of UZ < UC |
| Max. cable length to DC link | 2 m |
| Max. cable length to energy storage modules | 20 m |
| Parallel operation | Theoretically unlimited number of devices Self-adjusting Automated Master-/Slave-setting for communication |
| Retrofit | Can be retrofitted into existing systems |
| Typeplate/Device information | Electronic via QR-Code: Further device specific information Management-features |
| Internal digital storage | Operation hours meter |
With a current load capacity of 5 amperes effective continuous and 40 amperes peak for 3 seconds compared to the storage unit, which may have a maximum voltage of 450 volts DC, the PxtTX device can generate up to 18 kilowatts of power. The device has a closed housing to provide special protection against suspended particles in the air. Heat is dissipated by convection via heat sinks.
The device can be equipped ex works with a storage volume of two or four kilowatt seconds. Built into the device as standard is the automatic detection of the brake transistor switch-on voltage threshold, which enables the device to work with all commercially available frequency inverters and servo controllers in a plug play manner. The extensive safety features of the PxtTX protect against reverse polarity of the DC link connections, against the connection of loaded memories and against overloading the system on both the memory and DC link sides. Internal fuses are standard.
The PxtTX device is equipped with an SD memory card, an external 24-volt power supply, status indicators via LEDs, boot loading and reset options and 6 digital I/Os. This is supplemented by output functions via a USB module.
The main application is that of a short-term UPS for electrical drives in an environment with suspended particles in the air. The device is specially protected against this with a closed housing and convection heat dissipation.
The main area of application of the PxtTX is the compensation of so-called brownouts, i.e. the bridging of short voltage dips as well as the safe and defined standstill of the electrical drive system during blackouts.
