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Redundancy Power Supply - 24V, 10 A, 240 W, Single-phase Input
26
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 power supplies 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.
Lower end of the specified adjustment range
Output voltage
Output current
Reduce output current linearly between +45 °C and +70 °C.
Upper end of the specified adjustment range
Output voltage
Output current
Reduce output current linearly between +45 ...70 °C (+113 ...158 °F)
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.
Current values between 24 and 27V can be interpolated.
Figure 33 - Adjustment Range of the Output Voltage
The output voltage shall only be changed when absolutely necessary. For
example, battery charging, described next.
Rockwell Automation Publication 1606-RM110A-EN-P - July 2020
Due to the soft output voltage regulation
characteristic (parallel mode feature) a setting
Nom
24.0V
to 24.0V results to an output voltage of
23.8V±0.2% at 24 A and 25.0V±0.2% at no load.
See
Min
12 A
At 45 °C (113 °F)
Min
10 A
At 60 °C (140 °F)
Min
7.55 A
At 70 °C (158 °F)
Due to the soft output voltage regulation
characteristic (parallel mode feature) a setting
Nom
27.0V
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
10.6 A
At 45 °C (113 °F)
Min
8.9 A
At 60 °C (140 °F)
6.7 A
At 70 °C (158 °F)
Output Voltage Range, typ.
28.2V
27.0V
26.7V
Spec
d
Adjustment
Range
25.0V
24.0V
23.8V
Output Current
Figure
33.
Figure
33.
a) 240W point
b) 288W point
a)
b)
a)
b)
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