Reference Manual

All parameters are specified at 24V, 80A output current, 25ªC ambient and after a 5 minutes run-in time, unless noted otherwise.
4 Rockwell Automation Publication 1606-RM011A-EN-P — February 2014
Bulletin 1606 Switched Mode Power Supplies
3. Input and Output Characteristics
Number of inputs - 2
Number of outputs - 1
Input voltage nom. DC 12-28V ±30% The input circuitry must meet the SELV requirements
stipulated by IEC/EN/UL 60950-1.
Input voltage range - 8.4-36.4Vdc
Voltage drop, input to output typ. 95mV at 2x40A, see Fig. 3-1
typ. 49mV at 2x20A, see Fig. 3-1
typ. 81mV at 1x40A, see Fig. 3-2
Input current nom. 2x 0-40A continuous
nom. 2x 40-65A for 5 seconds
max 2x 65A at continuous overload or short circuit
Peak input current max. 1500A for max. 1ms per input
Output current nom. 80A continuous
nom. 80-130A for 5 seconds
max.
130A at continuous overload or short circuit
Reverse current max. 1mA at 24V, per input, -40°C to +70°C
Reverse voltage max. 40Vdc voltage applied to the output, continuously allowed
Output capacitance typ. 320μF
Note: Ensure that the continuous output current does not exceed 130A. Check the short-circuit current of the power sources and if the
power source can deliver more than 130A together, use an appropriate fuse on the output.
Fig. 3-1 Input to output voltage drop when both inputs draw current
(typical 1+1 redundant case, when the output voltages of the two units are equal or set into “parallel use” mode)
V
A
24V,40A
+
-
"Parallel
Use"
24V,40A
+
-
"Parallel
Use"
V
A
I 1
I 2
U 1
U 2
I 1 I 2 = U 2 U 1 = Voltage Drop U 1 = U OUT -
Output
A
V
I OUT
U OUT
Variable
Load,
0-80A
XLSRED80
Input 1
Input 2
Output
Voltage Drop, typ
0mV
20A 60A
20mV
40mV
60mV
80mV
100mV
120mV
80A40A
Output:
A
.
.
.
2
5
°
C
B
.
.
.
6
0
°
C
2x20A2x10A
Input / Output Current
Input:
2x40A2x30A
0
0
A
B
Fig. 3-2 Input to output voltage drop when only one input draws current
Voltage Drop, typ.
0mV
10A 30A
20mV
40mV
60mV
80mV
100mV
120mV
40A20A
A
.
.
.
2
5
°
C
B
.
.
.
6
0
°
C
Output Current
0
A
B
Voltage Drop U 1 = U OUT -
Not used or
power supply
with lower
voltage
V
A
24V,40A
+
-
I
1
U 1
Output
A
V
I OUT
U OUT
Variable
Load,
0-40A
XLSRED80
Input 1
Input 2
Output