Rockwell
Automation
1606-XLE240EP 24V, 10A; Single Phase Input
10000126343
(Version 00)
www.ab.com
Page 15
25.
A
PPLICATION
N
OTES
25.1.
P
EAK
C
URRENT
C
APABILITY
Solenoids, contactors and pneumatic modules often have a steady state coil and a pick-up coil. The inrush current demand of the pick-up coil is several
times higher than the steady state current and usually exceeds the nominal output current (including the PowerBoost) The same situation applies, when
starting a capacitive load.
Branch circuits are often protected with circuit breakers or fuses. In case of a short or an overload in the branch circuit, the fuse needs a certain amount
of over-current to trip or to blow. The peak current capability ensures the safe operation of subsequent circuit breakers.
Assuming the input voltage is turned on before such an event, the built-in large sized output capacitors inside the power supply can deliver extra
current. Discharging this capacitor causes a voltage dip on the output. The following two examples show typical voltage dips:
Fig. 25-1 Peak load 20A for 50ms, typ.
Fig. 25-2 Peak load 50A for 5ms, typ.
10ms/DIV
Output
Voltage
Output
Current
24V
0A
20A
18.5V
1ms/DIV
Output
Voltage
Output
Current
24V
0A
50A
12V
Peak load 20A (resistive) for 50ms
Output voltage dips from 24V to 18.5V.
Peak load 50A (resistive) for 5ms
Output voltage dips from 24V to 12V.
25.2.
C
HARGING OF
B
ATTERIES
The power supply shall not be used to charge batteries. Choose 1606-XLS for charging batteries.
