20
21
-1
1
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Power Supply PS1000-A6-24.20.R
Application Notes
25.2
Adjusting the Output Voltage
A voltage adjustment potentiometer can be found behind the flap on the front of the unit.
However, it is not recommended to change the output voltage since load sharing between
devices connected in parallel can only be achieved by a precise setting of the output voltages.
The factory settings allow precise load sharing and only qualified personnel should change
the adjustment potentiometer.
The maximum output voltage which can occur at the clockwise end position of the
potentiometer due to tolerances is 30V. It is not a guaranteed value which can be achieved.
The typical value is 29.5V.
Current values between 24 and 28V can be interpolated.
Figure 25.4 Adjustment range of the output voltage
The output voltage shall only be changed when absolutely necessary, e.g., for battery charging
as described in the next chapter.
Lower end of the specified adjustment range
Output voltage
nom.
24.0V
Due to the soft output voltage regulation characteristic
(parallel mode feature) a setting to 24.0V results
to an output voltage of 23.8V
±0.2%
at 24A and 25.0V
±0.2%
at no load. See Figure 25.4.
Output current
min.
24A
At 45°C
min.
20A
At 60°C
min.
15A
At 70°C
Reduce output current linearly b45°C and +70°C.
Upper end of the specified adjustment range
Output voltage
nom.
28.0V
Due to the soft output voltage regulation characteristic
(parallel mode feature) a setting to 28.0V results
to an output voltage of 27.7V
±0.2%
at 20.6A and 29.2V
±0.2%
at no load. See Figure 25.4.
Output current
min.
20.6A
At 45°C
min.
17.1A
At 60°C
min.
13.0A
At 70°C
Reduce output current linearly b45°C and +70°C.
Output Voltage Range
, typ.
0A
20.8A
25.0V
24.0V
29.2V
23.8V
27.7V
28.0V
24.2A
17.1A
Specified
Adjustment
Range
Output Current
20.0A
a) 480W point
b) 576W point
a)
b)
b)
a)
