Manualsbrain.com
  1. Manuais
  2. Marcas
  3. Puls
  4. ML50.100 Power Supply
  5. Guia De Especificação

Puls ML50.100 Power Supply Guia De Especificação

Download
Página de 20
 
 
 
ML50.100, ML50.109 
 
MiniLine 
 
24V, 2.1A, S
INGLE 
P
HASE 
I
NPUT
 
 
 
Mar. 2007 / Rev. 1.0  DS-ML50.100-EN 
All parameters are specified at 24V, 2.1A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted. 
www.pulspower.com   Phone +49 89 9278 0    Germany 
18/20 
Please note: This simple way to build a redundant system has two major disadvantages: 
- 
The faulty power supply can not be recognized. The green LED will still be on since it is reverse-powered from 
the other power supply. 
- 
It does not cover failures such as an internal short circuit in the secondary side of the power supply. In such a 
situation the defective unit becomes a load for the other power supplies and the output voltage can not be 
maintained any more.  
This above conditions can be avoided by utilizing decoupling diodes which are included in the decoupling module 
MLY02.100. 
Other recommendations for building redundant power systems: 
a) 
Use separate input fuses for each power supply. 
b) 
Monitor the individual power supply units. A DC-ok output is included in the ML50.100, ML50.101 and 
ML50.111. In all other cases, use the redundancy module YRM2.DIODE which has a monitoring circuit for each 
input included. 
c) 
When possible, connect each power supply to different phases of the mains network. 
 
27.6. D
AISY 
C
HAINING OF 
O
UTPUTS
 
Daisy chaining (jumping from one power supply output to the next) is allowed as long as the maximum current 
through one terminal pin does not exceed 13A. If the current is higher, use a separate distribution terminal block. 
 
Fig. 27-5   Daisy chaining of outputs 
 
Fig. 27-6   Using distribution terminals 
 
Power
Supply
+  +
-  -
Input
Output
Load
+
-
max 13A!
Power
Supply
+  +
-  -
Input
Output
 
 
Load
+
-
Distribution
Terminals
Power
Supply
+  +
-  -
Input
Output
Power
Supply
+  +
-  -
Input
Output
 
 
27.7. C
HARGING OF 
B
ATTERIES
 
The power supply can be used for float-charging of lead-acid or maintenance free 24V VRLA batteries. 
Instructions for charging batteries: 
a) 
Ensure that the ambient temperature of the power supply does not exceed 50°C. 
b) 
Set the output voltage on a disconnected load, very precisely to the end-of-charge voltage according to the 
expected battery temperature. 
End-of-charge voltage 
27.8V 
27.5V 
27.15V 
26.8V 
Battery 
temperature 
10°C 20°C 30°C 40°C 
c) 
Use a 4A or 6A circuit breaker (or blocking diode ) between the power supply and the battery. 
d) 
Ensure that the output current of the power supply is below the allowed charging current of the battery. 
e) 
Use only matched batteries when putting 12V types in series. 
f) 
The return current to the power supply is typ. 10.7mA at 25Vdc
 
when the power supply is switched off (except in 
case a blocking diode is utilized).