Allen-Bradley 1606-XLB480E, Manual, Page: 9 / 26

Rockwell Automation Publication 1606-RM104A-EN-P - July 2020 9
Output
The output provides a SELV/PELV rated voltage, which is galvanically isolated
from the input voltage.
The output is designed to supply any kind of loads, including capacitive and
inductive loads. If capacitors with a capacitance > 3 F are connected to the
output, the unit might charge the capacitor in an intermittent mode. Example
capacitors with a capacitance > 3 F may include electric double layer capacitors
(EDLCs or UltraCaps).
The output is electronically protected against overload, no-load, and short-
circuits. If there is a protection event, audible noise may occur.
(1) At heavy overloads (when output voltage falls below 13V), the power supply delivers
continuous output current for 2…5 s. After this, the output is switched off for approximately
7 s before a new start attempt with duration of 1 s is automatically performed. This cycle is
repeated as long as the overload exists. If the overload has been cleared, the device operates
normally.
Attributes Values Notes
Output voltage Nom DC 24V —
Adjustment range
Min 24…28V Guaranteed value
Max 30V
This is the max output voltage that can occur at the clockwise end position of the potentiometer
due to tolerances. It is not guaranteed that this value can be achieved.
Factory settings Typ 24.1V ±0.2%, at full load and cold unit
Line regulation Max 10 mV Between 90V and 300V AC
Load regulation Max 100 mV Between 0 A and 20 A, static value, see Figure 7
Ripple and noise voltage Max 100 mVpp Bandwidth 20 Hz to 20 MHz, 50 Ohms
Output current
Nom 20.0 A At 24V and an ambient temperature below 55 °C (131 °F)
Nom 12.5 A At 24V and 70 °C (158 °F) ambient temperature
Nom 17.1 A At 28V and an ambient temperature below 55 °C (131 °F)
Nom 10.7 A At 28V and 70 °C (158 °F) ambient temperature
— Derate linearly between 55…70 °C (131…158 °F)
Overload behavior
— Continuous current For output voltage above 13V DC, see Figure 7
—
Intermittent current
(1)
For output voltage below 13V DC, see Figure 7
Overload/ short-circuit current
Max 27.5 A Continuous current, see Figure 7
Typ 30 A
Intermittent current peak value for 1 s typ
Load impedance 50 mOhm, see
Figure 8 Discharge current of output capacitors is not included.
Max 11 A Intermittent current average value (R.M.S.) Load impedance 50 mOhm, see Figure 8
Output capacitance Typ 6 800 μF Included inside the power supply
Back-feeding loads Max 35V
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 7 - Output voltage vs. output current, typ Figure 8 - Short-circuit on output, intermittent current, typ
Output voltage
30 A
24V
Output current
13V
0V
5 A 10 A 15 A 25 A 0 A
Adjustment range
28V
A
B
20 A
A: continuous current
B: intermittent current
Output
Current
0
30 A
7 s 7 s
7 s 1 s 1 s 2-5 s
t
Short -circuit
Normal
operation
Normal
operation
First
pulse