Output

The output provides an SELV/PELV nominal voltage that is electrically isolated from the input voltage.

The output is designed to supply any type of load, including capacitive and inductive loads. If extremely large capacitors such as EDLCs (electrical double-layer capacitors or "UltraCaps") with a capacitance > 10 mF and 2.5 A or > 5 mF with 5 A additional current load are connected to the output, the device could charge the capacitor in an intermittent mode.

The output is electronically protected against overload, no-load and short circuit. Noise may be audible in the case of a protective event.

Output voltage

Nom.

DC 24 V

 

Adjustment range

Min.

24 - 28 V

Guaranteed value

Max.

30 V 2)

In end position of the potentiometer, clockwise.

Factory settings

Typ.

24.1 V

±0.2 %, under full load and cold device

Line regulation

Max.

10 mV

180 - 300 Vac

Load regulation

Max.

150 mV

0 A → 5 A, static value, see fig. Output voltage to output current, typical

Residual ripple and ripple voltage

Max.

100 mVpp

20 Hz to 20 MHz, 50 Ohm

Output current 3)

Nom.

5 A

At 24 V and ambient temperature below 55 °C

Nom.

4.3 A

At 28 V and ambient temperature below 55 °C,

Nom.

3.1 A

At 24 V and ambient temperature below 70 °C

Nom.

2.7 A

At 28 V and ambient temperature below 70 °C

Overload characteristics

Continuous current

Output voltages > 2... 10 Vdc (depending on the input voltage), see fig. Output voltage to output current, typical

Hiccup mode 1)

Output voltage < 2... 10 Vdc (depending on the input voltage), see fig. Output voltage to output current

Short circuit current

Max.

9.8 A

Continuous current, see fig. Output voltage to output current, typ.

Typ.

9.2 A

Peak value of the current in intermittent operation for typically 60 ms
Load impedance 50 mOhm, see Fig. Output voltage over output current, typ.
The discharge current of the output capacitors is not included.

Max.

3.5 A

RMS value of the current in intermittent operation,
load impedance 50 mOhm, see fig. Output voltage to output current, typ.

Output capacity

Typ.

2,050 µF

Included in the power supply

Back-feeding loads

Max.

35 V

This power supply is stable and will not malfunction if a load is feeding back voltage to the power supply. It is irrelevant whether the power supply is switched on or off. The absorbent energy can be calculated according to the large built-in output capacitor.

1) Hiccup mode
In case of heavy overload (if the output voltage drops below 2 ... 10 V, depending on the input voltage), the power supply provides output current for 30 ms. The output is then switched off for about 160 ms before a new switch-on attempt is automatically made. This cycle is repeated as long as the overload persists. After the overload has been rectified, the device will operate normally.

2) This is the maximum output voltage that can occur in the end position of the potentiometer in clockwise direction due to tolerances. It is not a guaranteed value that can be achieved.

3) Linear derating between +55 °C and 70 °C ambient temperature

Output 1:
Output voltage over output current, typ.; intermittent operation, short circuit at output