High-frequency AC/DC Switching Power Supplies SW21
SW21 switching power supplies are direct current converters designed for industrial applications with high-frequency PWM control and the use of IGBTs.
Designed and built for continuous operation at full load, they are ideal for heavy-duty applications such as metal surface treatments, electrochemical processes, water treatment, and all applications requiring precise and reliable direct current control.
Technical Features
- Linear direct current delivery
- Pulsed current delivery
- Current ramp management
- Ah and Amin management
Available communication protocols:
- Profinet
- Modbus TCP/IP
- Ethernet
- others on request
- Data collection capability via OPC UA server
- Control capability within the LAN via PC, tablet, or smartphone
- High-precision regulation
- High response speed
- Power factor 1
- Reduced size and weight
Touch version
- Pulsed current operation with adjustable parameters.
- Display of Ah for dosing pump management.
- Programmable and storable work cycles with voltage and current ramps.
Available functions are:
- Turn the rectifier on and off
- Set operation to constant voltage or constant current
- Set a desired Ah level with contact for activation of a possible doser
- Display the delivered voltage and current
- Display the partial and total Ah delivered
- Display the rectifier status and any alarms
- Set the work cycle
Set the work cycle
The direct voltage delivery modes with which a work cycle can be composed are the following:
Rise ramp
It is possible to set a rise time for the direct voltage to achieve a controlled increase of the working current at the start of the process. Adjustable.
Pulsed operation
For all or only a certain phase of the work cycle, it is possible to provide pulsed current delivery. The adjustable parameters are the pulse amplitude (limited by the rectifier’s rated value) and the pulse duration time. The pulse time is typically set between 200–800 ms. Faster pulses are affected by the inductance of the connection to the tank and are increasingly attenuated as the pulse speed increases.
Constant current operation
In constant voltage/current operation, the rectifier stabilizes the set voltage or current against variations in mains voltage and load. Constant voltage/current operation can be applied for the entire work cycle or for part of it.
