Rockwell Automation Allen-Bradley 1606-XLDF240F, Справочное руководство

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Rockwell Automation Publication 1606-RM124A-EN-P - September 2021 9
DC/DC Converter - 48V/48V, 5 A, 240 W Reference Manual
Hold-up Time
The input side of the DC/DC converter is equipped with a bulk capacitor that
keeps the output voltage alive for a certain time period when the input voltage
dips or is removed. The bulk capacitor can be discharged by loading the DC/DC
converter on the output side or through a load that is parallel to the input.
There is no protection in the DC/DC converter that helps prevent current from
flowing back to the input terminals. If prevention is needed, use an external
diode.
At no load, the hold-up time can be up to several seconds. During this time, the
green DC-OK lamp is also on.
Output current Nom
6 A At 48V and an ambient temperature below 45 °C (113 °F)
.
5 A At 48V and 60 °C (140 °F) ambient temperature
.
3.8 A At 48V and 70 °C (158 °F) ambient temperature
.
5.2 A At 56V and an ambient temperature below 45 °C (113 °F)
.
4.3 A At 56V and 60 °C (140 °F) ambient temperature
.
3.2 A At 56V and 70 °C (158 °F) ambient temperature
.
Overload behavior — Continuous current —
Overload/short-circuit current Max 7 A Continuous current, short-circuit impedance <90 m Ω
.
Output capacitance Typ 1750 µF Included inside the power supply.
Back-feeding loads Max 63V
The unit is resistant and does not show malfunctioning when a load feeds back
voltage to the power supply . It does not matter whether the power supply is on or off.
The absorbing energy can be calculated according to the built-in, large-sized output
capacitor.
Figure 6 - Output Voltage Versus Output Current at
48V DC Input Voltage, Typical
Figure 7 - Current Limitation Versus Input Voltage,
(46V Constant Voltage Load), Typical
Output Voltage (V)
0
4 5 6
8
16
24
56
32
40
48
8 3 1 2 0 7
Adjustment
Range
Output Current (A)
5.0
6.0
7.0
30 35 45 50 60
Input Voltage (V DC)
Output Current (A)
6.5
55
5.5
40
Attributes Values Notes
Hold-up Time
Typ 14 ms At 48V DC input voltage, 48V, 2.5 A output; see Figure 8 .
Min 11 ms At 48V DC input voltage, 48V, 2.5 A output; see Figure 8 .
Typ 7.7 ms At 48V DC input voltage, 48V, 0.5 A output; see Figure 8 .
Min 6.2 ms At 48V DC input voltage, 48V, 5 A output; see Figure 8
.
Figure 8 - Hold-up Time Versus Input Voltage Figure 9 - Shutdown Test Setup
0
3
9
12
18
36 40 44 48 56
Input Voltage (V DC)
Hold-up Time (ms)
52
(a)
(b)
(c)
(d)
6
15
(a) 48V, 2.5A, typ.
(b) 48V, 2.5A, min.
(c) 48V, 5A, typ.
(d) 48V, 5A, min.
Load
DC
Source
+
-
Input
Output
+
-
+
-
S1
1606-XLDF240F