User manual

CD5.241, CD5.241-S1
CD–Series
DC/DC Converter; 24V, 5A
Jan. 08 / Rev. 1.1 DS-CD5.241-EN / All parameters are specified at 24V, 5A and 24Vdc input at 25°C ambient unless otherwise noted.
www.pulspower.com Phone [phone] Germany
19/22
27.5. SERIES OPERATION
DC/DC converters can be connected in series to increase the output voltage.
Fig. 27-5 Schematic for series operation
Instructions for use in series:
Unit B
-
+
Load
+
-
Input
Output
-
+
Unit A
Earth
(see notes)
Input
Output
a) It is possible to connect as many units in series as needed,
providing the sum of the output does not exceed 150Vdc.
b) 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.
c) For serial operation use DC/DC converters of the same type.
d) Earthing of the output is required when the sum of the output
voltage is above 60Vdc.
e) Keep an installation clearance of 15mm (left/right) between
two DC/DC converters and avoid installing the DC/DC
converters on top of each other.
Note:
Avoid return voltage (e.g. from a decelerating motor or
battery) which is applied to the output terminals.
27.6. PARALLEL USE TO INCREASE OUTPUT POWER
Several DC/DC converter can be paralleled to increase the output power.
Fig. 27-6 Schematic for parallel operation
Instructions for parallel use:
Unit B
-
+
Load
+
-
Fuse
*)
Fuse
*)
-
+
Unit A
Input
Output
Input
Output
a) Use only DC/DC converters from the same series (C-Series) or
consult PULS.
b) Adjust the output voltages of all power supplies to
approximately the same value (±200mV).
c) A fuse (or diode) on the output is only required if more than
three units are connected in parallel.
d) Do not load terminals with more than 25A. Follow wiring
instructions according to chapter 27.7
e) Ensure that the ambient temperature of the power supply does
not exceed 45°C.
27.7. DAISY CHAINING OF OUTPUTS
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 25A. If the current is higher, use a separate distribution terminal block.
Fig. 27-7 Daisy chaining of outputs
Fig. 27-8 Using distribution terminals
DC/DC
Converter
+ + - -
Input
Output
Load
+ -
max 25A!
DC/DC
Converter
+ + - -
Input
Output
Load
+ -
Distribution
Terminals
DC/DC
Converter
+ +
- -
Input
Output
DC/DC
Converter
+ +
- -
Input
Output