Rockwell Automation Allen-Bradley 1606-XLDF240F, Справочное руководство

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Rockwell Automation Publication 1606-RM124A-EN-P - September 2021 7
DC/DC Converter - 48V/48V, 5 A, 240 W Reference Manual
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. When additional
external input filters are used, a superimposed AC voltage can be generated on
the input terminals of the DC/DC converter, which might cause a unit
malfunction. Therefore, additional input filters are not recommended. To
avoid the resonant effects, the minimal resistance of the supplying network
that depends on the inductance of the input network, must be above the
boundary curve in
Figure 4 .
Turn-on overshoot Max 500 mV See Figure 2
.
Input capacitance Typ 1650 µF
Installed inside the device, external capacitors on the input
are allowed without any limitations.
External input protection
The device is designed, tested, and approved for branch circuits up to 50 A without an
additional protection device. If an external fuse is used, do not use circuit breakers
smaller than 10 A B- or
C-Characteristic. Smaller circuit breakers can cause a nuisance tripping of the circuit
breaker.
Attributes Values Notes
Figure 1 - Input Voltage Range Figure 2 - Turn-on Behavior, Definitions
Turn-on
17.5V DC
V
IN
P
OUT
Shut-down
32.4V DC
15.5V DC
18.0V DC
Rated input range
35.0V DC
Start-up
Delay
Rise
Time
Overshoot
-5%
Output
Voltage
Input
Voltage
Figure 3 - Input Current Versus Output Load
Figure 4 - External Input Filter Requirements to Avoid Filter Instabilities
6 1 2 3 4
0
2
4
6
8
5
Output Current (A)
Input: 48V DC
Input Current (A), typ.
Input: 36V DC
1 mΩ
10 mΩ
100 mΩ
1 Ω
0.1 1 10
Inductance of the supplying network (mH)
Resistance of the Supplying Network
(a) max
(b) typ
(a)
(b)