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V301 high-power current source
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Example of an application: Manufacturing of CD matrices
Galvanikbäder mit Prozeßsteuerung und Überwachung
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Pure nickel matrices for the pressing of CDs
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Product description
New development of a 1Q process current source
This was designed for applications requiring a high degree of accuracy, low current ripple and broad power bandwidth.
As a rule, such applications involve:
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Process current sources in galvanisation |
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Magnetic field controlling |
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The testing of fuses |
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Programmable welding equipment |
Performance data:
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Current can be regulated between 0 - 150A at 24V to 48V |
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Control accuracy better than 0.3% of final value |
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Current ripple smaller than 0.6% |
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Power bandwidth approx. 100Hz |
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Continuous output power max. 7.2kW |
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Degree of efficiency exceeding 94% |
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Activation:
To avoid interference, the external command variable for the output current is measured with the aid of a difference input. A current monitor output is available for higher level monitoring and controlling functions.
Particular attention was paid to the DC isolation of both control and operating unit so that interference in the power stage can be kept away from the control unit and monitoring unit.
Monitoring functions:
The unit is only ready for operation when all monitoring functions show "OK":
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All 3 phases must be present |
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The main DC voltage must be high enough |
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Overcurrent monitoring with memory function. |
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The output current must not exceed the |
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predefined maximum. |
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Degree of efficiency: 94% and higher |
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Ready status is DC isolated |
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Enable input compatible for the main control |
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is DC isolated |
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Output current 150A:
Channel 1:5V/Div. current monitor
+10VDC corresponds to 150A
Channel 2: 0mV/Div.
current monitor shows
the ripple of 60mVpp
at 24kHz, corresponds to 0.6%,
also at 150A
The oscillogram demonstrates the
high degree of purity of the output current.
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