User manual

QS3.241
Q-Series
24V, 3.4A, SINGLE PHASE INPUT
Nov. 2006 / Rev. 1.0 DS-QS3.241-EN
All parameters are specified at 24V, 3.4A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted..
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8. OUTPUT
Output voltage
nom. 24V
Adjustment range
min. 24-28V guaranteed, multi turn potentiometer
max. 30V at clockwise end position of potentiometer
Factory setting
24.1V
±0.2%, at full load, cold unit
Line regulation
max. 10mV 60 to 300Vac
Load regulation max. 100mV static value, 0A Æ 3.4A Æ 0A
Ripple and noise voltage
max. 50mVpp 20Hz to 20MHz, 50Ohm
Output capacitance typ. 1 500µF
Continuous power capability
Output current
nom. 3.4A at 24V, see Fig. 8-1
nom. 3.0A
at 28V, see
Fig. 8-1
Output power nom. 80W 24V, continuous
nom. 84W 28V, continuous
Short-circuit current
min. 3.5A load impedance 250mOhm, see Fig. 8-1
max. 4.2A load impedance 250mOhm, see Fig. 8-1
BonusPower
®
, short term power capability (up to typ. 4s)
The power supply is designed to support loads with a higher short-term power requirement without damage or
shutdown. The short-term duration is hardware controlled by an output power manager. The BonusPower
®
is
repeatedly available. Detailed information can be found in chapter 26.1 .
Once BonusPower
®
has been stopped by the output power limiter, a timer disables the next BonusPower
®
capability.
The recovery timer will start as soon as the output voltage reaches the adjusted value again, which usually happens
after the load has been reduced.
Output current
nom. 5A at 24V, see Fig. 8-1
nom. 4.5A
at 28V, see
Fig. 8-1
Output power
nom. 120W 24V, short term
nom. 126W 28V, short term
Short-circuit current
min. 5.2A load impedance 250mOhm, see Fig. 8-1
max. 6.0A load impedance 250mOhm, see Fig. 8-1
Bonus time typ. 4s at 24V, 5A, duration until the output voltage dips,
min 3s see Fig. 8-2
max. 5s
BonusPower
®
recovery time
typ. 7s overload free time to reset power manager, see Fig. 8-3
Peak current capability (up to several ms)
The power supply can deliver a peak current which is higher than the specified 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 chapter 26.2.
Peak current voltage dips
typ. from 24V to 20V at 6.8A for 10ms
typ. from 24V to 12.5V
at 13.5A for 2ms
typ. from 24V to 7.5V
at 13.5A for 5ms