Rockwell Automation 1606-XLE80E, Руководство пользователя

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Rockwell Automation
1606-XLE80E-2 24V, 3.3A; Single Phase Input
10000108328
(Version 00)
www.ra.rockwell.com
Page 17
26. A
PPLICATION
N
OTES
26.1. 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 protective device 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. 26-1 Peak load 6.6A for 50ms, typ. Fig. 26-2 Peak load 16.5A for 5ms, typ.
10ms/DIV
Output
Voltage
Output
Current
24V
0A
6.6A
12.5V
1ms/DIV
Output
Voltage
Output
Current
24V
0A
16.5A
7V
Peak load 6.6A (resistive) for 50ms
Output voltage dips from 24V to 12.5V.
Peak load 16.5A (resistive) for 5ms
Output voltage dips from 24V to 7V.
26.2. C
HARGING OF
B
ATTERIES
The power supply shall not be used to charge batteries.
26.3. B
ACK
-
FEEDING
L
OADS
Loads such as decelerating motors and inductors can feed voltage back to the power supply. This feature is also called return voltage immunity or
resistance against Back- E.M.F. (Electro Magnetic Force).
This power supply 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 maximum allowed feed back voltage is 35Vdc. The absorbing energy can be calculated according to the built-in large sized output capacitor which
is specified in chapter 9.