Datasheet

CD10.241
CD-Series
DC/DC Converter 24V/24V, 10A, 240W
22.6. REQUIREMENTS FOR THE SUPPLYING SOURCE
In certain circumstances, the input filter of the DC/DC converter can show a resonant effect which is caused by the
supplying network. Especially when additional external input filters are utilized, a superimposed AC voltage can be
generated on the input terminals of the DC/DC converter which might cause a malfunction of the unit. Therefore,
additional input filters are not recommended. To avoid the resonant effects, the minimal resistance of the supplying
network which depends on the inductance of the input network, shall be above the boundary curve in Fig. 22-3.
Fig. 22-3 External input filter requirements to
avoid filter instabilities
1 mOhm
10 mOhm
100 mOhm
1 Ohm
0.1mH 1mH 10mH
Inductance of the supplying network
Resistance of the
supplying network
(a) max.
(b) typ.
(
a
)
(
b
)
22.7. SERIES OPERATION
22/25
DC/DC converters 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 DC/DC-
converters and avoid installing the DC/DC-converters on top of each other. Do not use DC/DC-converters in series in
mounting orientations other than the standard mounting orientation (input terminals on the bottom and output
terminals on top of the unit).
Unit A
Input
Output
Unit B
-
+
-
+
+
-
Input
Output
Load
Apr. 2018 / Rev. 1.2 DS-CD10.241-EN All parameters are typical values at 24V, 10A, 24Vdc input voltage, 25°C ambient and
after a 5 minutes run-in time unless otherwise noted.
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