PS-15DR Installation Guide Rev.B.doc
2013-04-23
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1. P
RODUCT
D
ESCRIPTION
The PS-15DR is dedicated for electronic equipment which require 12VDC buffered source of supply.
At nominal condition PS-15DR can provide up to 1.5A output current with no time limit.
Although the PS-15DR was designed and tested for Roger Access Control System (RACS), anyway it
can be used with any other applications requiring buffered supply source, in such cases an
integrator or installer must verify that PS-15DR will operate satisfactory in given application.
2. C
ONSTRUCTION
PS-15DR is a switching mode power supply that can provide better efficiency then regular linear
regulators. Also, due to lack of power transformer, it offers lower weight and size. Device enclosure
is made from fire retardant polycarbonate plastic which protects user from high voltages existed
inside the case and separates internal electronic module from unintentional penetration. For device
and user safety electronic circuit employs overvoltage, overcurrent and thermal protection. Device
contains screw type terminal blocs and front panel with LED indicators. PS-15DR enclosure is
adapted for DIN 35mm (T35) standard rail and should be powered directly from 230VAC/50Hz AC
line.
2.1 Output current
PS-15DR maximal output current is ambient temperature dependent. For nominal ambient
temperature range of +5°C to +30°C device can deliver up to 1.5A with no time limit. At higher
temperatures maximal output current decreases according to tradeoff characteristic as presented
on Fig.1. For the highest allowed tempe40°C device can provide 1A only.
Note: In case of overload power supply switches off and remains in this state as long as overload
exists. In such a case entire load current is sourced from the reserve battery (if connected). If the
overload is continued for long time enough it can lead to discharge of battery and total lack of
supply on AUX output.
Fig.1 Tradeoff characteristic between nominal output current (I
N
) and ambient temperature (t
amb
)
