Reference Manual

All parameters are specified at 24V, 0.63A, 230Vac input, 25°C ambient and after a 5 minutes run-in time, unless noted otherwise.
6 Rockwell Automation Publication 1606-RM004A-EN-P - January 2014
Bulletin 1606 Switched Mode Power Supplies
6. Output
Output voltage nom. 24V
Adjustment range min. 24-28V guaranteed
max. 30V *) at clockwise end position of potentiometer
Factory setting 24.5V ±0.2%, at full load, cold unit
Line regulation max. 10mV 85-264Vac
Load regulation max. 100mV static value, 0A 0.63A
Ripple and noise voltage max. 50mVpp 20Hz to 20MHz, 50Ohm
Output capacitance typ. 900μF
Output current nom. 0.63A at 24V, see Fig. 6-1
nom. 0.54A at 28V, see Fig. 6-1
Output power nom. 15W
Short-circuit current min. hiccup mode, see Fig. 6-2
max. hiccup mode, see Fig. 6-2
*) This is the maximum output voltage which can occur at the clockwise end position of the potentiometer due to tolerances. It is not a
guaranteed value which can be achieved. The typical value which can be achieved by turning the potentiometer to the clock-wise end
position is 28.6V.
Fig. 6-1 Output voltage vs. output current,
typ.
Fig. 6-2 Hiccup mode; output current at
shorted output, 230Vac, typ.
Output Voltage
0
0
4
8
12
28V
16
20
24
2
A
2.06.00.1 1.44.08.0 1.2 1.6 1.8
Adjustment
Range
Output Current
Continuous
Hiccup Mode
Output
Current
0
2A
100ms
t
250ms 250ms
Peak current capability (up to several milliseconds)
The power supply can deliver a peak current which is higher than the specied short term current. This helps to start
current demanding loads or to safely operate subsequent circuit breakers.
The extra current is supplied by the output capacitors inside the power supply. During this event, the capacitors will be
discharged and causes a voltage dip on the output. Detailed curves can be found in section 20.1.
Peak current voltage dips typ. from 24V to 15.5V at 1.3A for 50ms, resistive load
typ. from 24V to 17.5V at 3.15A for 2ms, resistive load
typ. from 24V to 11.5V at 3.15A for 5ms, resistive load