TDK-Lambda GENESYS 15KW, Руководство пользователя

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83532002 Rev H
5.2.2. Constant Current Mode
a) In Constant-Current mode, the Power Supply regulates the Output current at the
selected value, while the voltage varies with the load requirement.
b) While the Power Supply is operating in Constant-Current mode, the CURRENT
LED on the front panel is illuminated.
c) Adjustment of the Output current can be made when the power supply output is
enabled (Output On) or disabled (Output Off).
−
Disabled Output (Off): Press the PREV button and then rotate the Current
encoder knob. The CURRENT meter will show the programmed current for 5
seconds after the adjustment has been completed. Then the VOLTAGE meter
will display “OFF”.
−
Enabled Output (On) with Power Supply in Constant-Voltage mode: Press the
PREV button and then rotate the CURRENT encoder knob. The CURRENT
meter will show the programmed current limit for 5 seconds after the
adjustment has been completed, and will then return to show the actual
Output current.
−
Enabled Output with Power Supply in Constant-Current mode: Rotate the
CURRENT encoder knob to adjust the current limit.
d) Adjustment resolution can be set to Coarse or Fine adjustment. Press the FINE
button to select between Coarse and Fine resolution. The FINE LED turns On
when the resolution is set to FINE.
5.2.3. Automatic Crossover
If the Power Supply operates in Constant-Voltage mode, while the load current is
increased to greater than the Output current limit setting, the Power Supply will
automatically switch to Constant-Current mode. If the load is decreased to less than
the Output current limit setting, the power supply will automatically switch back to
Constant-Voltage mode.
5.3. Over Voltage Protection (OVP)
The OVP circuit protects the load in the event of a remote or local programming error or a
Power Supply failure. The protection circuit monitors the voltage at the power supply
sense points thus providing the protection level at the load. Upon detection of an Over-
Voltage condition, the power supply output will shut down.
5.3.1. Setting the OVP Level
The OVP can be set when the Power Supply output is Enabled (On) or Disabled (Off).
To set the OVP level, press the OVP/UVL button, so that the CURRENT meter shows
“OUP”. The VOLTAGE meter shows the OVP setting level. Rotate the VOLTAGE
encoder knob to adjust the OVP level. The display will show “OUP” and the setting
value for 5 seconds after the adjustment has been completed and will then return to
its previous state.
To preview the OVP setting, press the OVP/UVL pushbutton so that the CURRENT
display will show “OUP”. At this time, the VOLTAGE display will show the OVP
setting. After 5 seconds, the display will return to its previous state.
The minimum setting level is approximately 105% of the set Output voltage. The
maximum setting levels are shown in Tables 8-8 and 8-11.