Puls ML15.241 Power Supply Guia De Especificação
ML15.241
MiniLine
24V,
0.63A,
S
INGLE
P
HASE
I
NPUT
22.6. P
ARALLEL
U
SE FOR
R
EDUNDANCY
Power supplies can be paralleled for redundancy to gain higher system availability. Redundant systems require a
certain amount of extra power to support the load in case one power supply unit fails. The simplest way is to put two
power supplies in parallel. This is called a 1+1 redundancy. In case one power supply unit fails, the other one is
automatically able to support the load current without any interruption. Redundant systems for a higher power
demand are usually built in a N+1 method. E.g. five power supplies, each rated for 0.63A are paralleled to build a
2.52A redundant system.
certain amount of extra power to support the load in case one power supply unit fails. The simplest way is to put two
power supplies in parallel. This is called a 1+1 redundancy. In case one power supply unit fails, the other one is
automatically able to support the load current without any interruption. Redundant systems for a higher power
demand are usually built in a N+1 method. E.g. five power supplies, each rated for 0.63A are paralleled to build a
2.52A redundant system.
Please note: This simple way to build a redundant system does not cover failures such as an internal short circuit in
the secondary side of the power supply. In such a case, the defect unit becomes a load for the other power supplies
and the output voltage can not be maintained any more. This can only be avoided by utilizing decoupling diodes
which are included in the decoupling module MLY02.100.
the secondary side of the power supply. In such a case, the defect unit becomes a load for the other power supplies
and the output voltage can not be maintained any more. This can only be avoided by utilizing decoupling diodes
which are included in the decoupling module MLY02.100.
Recommendations for building redundant power systems:
a)
Use separate input fuses for each power supply.
b)
Monitor the individual power supply units.
c)
1+1 Redundancy is allowed up to an ambient temperature of 60°C
N+1 Redundancy is allowed up to an ambient temperature of 45°C
N+1 Redundancy is allowed up to an ambient temperature of 45°C
d)
It is desirable to set the output voltages of all units to the same value (± 100mV) or leave it at the factory setting.
22.7. S
ERIES
O
PERATION
Power supplies of the exact same type can be connected in series for higher
output voltages. It is possible to connect as many units in series as needed,
providing the sum of the output voltage does not exceed 150Vdc. Voltages
with a potential above 60Vdc are not SELV any more and can be dangerous.
Such voltages must be installed with a protection against touching. Earthing of
the output is required when the sum of the output voltage is above 60Vdc.
Avoid return voltage (e.g. from a decelerating motor or battery) which is
applied to the output terminals. Keep an installation clearance of 15mm (left /
right) between two power supplies and avoid installing the power supplies on
top of each other. Do not use power supplies in series in mounting
orientations other than the standard mounting orientation (input terminals on the bottom and output terminals on
top of the unit). Pay attention that leakage current, EMI, inrush current, harmonics will increase when using multiple
power supplies.
output voltages. It is possible to connect as many units in series as needed,
providing the sum of the output voltage does not exceed 150Vdc. Voltages
with a potential above 60Vdc are not SELV any more and can be dangerous.
Such voltages must be installed with a protection against touching. Earthing of
the output is required when the sum of the output voltage is above 60Vdc.
Avoid return voltage (e.g. from a decelerating motor or battery) which is
applied to the output terminals. Keep an installation clearance of 15mm (left /
right) between two power supplies and avoid installing the power supplies on
top of each other. Do not use power supplies in series in mounting
orientations other than the standard mounting orientation (input terminals on the bottom and output terminals on
top of the unit). Pay attention that leakage current, EMI, inrush current, harmonics will increase when using multiple
power supplies.
Earth
Unit A
AC
DC
Unit B
AC
DC
-
+
-
+
Load
+
-
22.8. I
NDUCTIVE AND
C
APACITIVE
L
OADS
The unit is designed to supply unlimited inductive loads.
The max. capacitive load depend on the steady state output current. At 0.6A output current, the output capacity
should not be larger than 660μF and at 0.3A output current not larger than 2 500μF. In case of larger capacitors, the
unit can show start-up attempts or start-up problems.
should not be larger than 660μF and at 0.3A output current not larger than 2 500μF. In case of larger capacitors, the
unit can show start-up attempts or start-up problems.
Oct. 2009 / Rev. 1.2 DS-ML15.241-EN
All parameters are specified at 24V, 0.63A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
All parameters are specified at 24V, 0.63A, 230Vac input, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
www.pulspower.com Phone +49 89 9278 0 Germany
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