Product category:
AC/DC Power Supplies
News Release from: Puls UK | Subject: ML30 and ML50 power supply units
Edited by the Electronicstalk Editorial
Team on 10 November 2000
Small and more economical DIN rail power
supplies
The new MiniLine switched-mode power supply units, the ML30 and ML50, were developed by Puls in response to significant market requirement for small and more economical lower power units
The new MiniLine switched-mode power supply units, the ML30 and ML50, were developed by Puls in response to significant market requirement for small and more economical lower power units, and complement the existing SilverLine range (60 to 1000kW) Design innovations include new methods of connection using either spring clamps or plug connectors and a revamped cooling design allowing installation in different orientations
This article was originally published on Electronicstalk on 3 Jul 2008 at 8.00am (UK)
Related stories
DIN-rail supplies have voltage drops covered
The latest addition to the Dimension range of DIN-rail power supplies from Puls offers an answer to the age-old problem of the voltage drop inherent in longer cables.
Miniature supplies on the DIN rail
The ML15 range of DIN-rail power supplies offers a choice of 5, 12 and 24V DC single outputs in a tiny 22.5 x 75 x 91mm housing.
Thermal considerations require minimal derating due to additional ventilation holes in the housing and sophisticated internal construction.
Power can be increased further using forced ventilation.
Excellent EMC performance (conducted and radiated) is not affected by the plastic housing and the units comply with the most stringent EMC standards EN50081, EN50082, EN60950, and EN50178.
Further reading
Supplies cut the cost of DIN-rail power
The C-Dimension Series of DIN-rail power supplies are considerably lower in cost than standard units, but with only minor reductions in functionality.
DIN-rail supplies come with conformal coating
Coating provides higher operational safety and reliability in a number of installation environments.
The new 24-28V/30W and 50W power supply units are exceptionally small: w x h x d = 45 x 75 x 91 mm - comparable competitor units are twice the volume.
Fast, simple connection using new spring clamps enable the MiniLine units to be connected (or disconnected) in seconds, without the need for tools, and with complete reliability.
The spring clamp maintains constant, perpetual pressure against the cable, and, even in the toughest of conditions (such as vibration) retightening is unnecessary, and no corrosion forms at the point of contact.
There is no need for cable end sleeves (ferrules), unless required.
Alternatively, the ML50.111 (50W) uses a plug connector with screw terminals, allowing the unit to be quickly connected or replaced without the need for rewiring.
The MiniLine series has many additional features already standard in the higher power range.
The wide-range-Input (100-240V AC nominal voltage, permitted limits: 85-264V AC/ 85-375V DC), a wide temperature range (-10 to +70C) and approvals including the CB Scheme, UL1950, and UL508 enable their use almost anywhere in the world.
Puls Overload Design means the units do not switch off at overload, but continue to supply up to 1.5 times the rated current in order to start up heavy loads (such as motors or DC/DC convertors).
This exclusive design therefore saves both unnecessary expense and valuable space.
The 50W units feature DCok signal output for remote monitoring.
Designed as a source of current, this output can directly control a 24V relay (inductive resistance under 700ohm) or an LED with protective resistor.
It can also be used by external logic for other control purposes, with the recovery diode needed for relay controls already built in to the unit.
Standard units can be paralleled for an increase in output power, however the ML50.101 can be used for parallel operation with load sharing.
By means of a slightly inclined 'soft output' characteristic curve (1V voltage drop between no-load operation and full load) the load is evenly distributed over the power supply units operating in parallel.
In this mode the units are more heat efficient and thus have a longer and more reliable lifespan.
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