Satel APS-524 User manual

®
APS-524
POWER SUPPLY
aps524_en 04/16
The APS-524 power supply unit has been designed for use with 24 V DC electrical
installations (e.g. access control systems). Due to application of an energy-efficient pulse
power system, supplied directly from the mains with 230 V AC, the thermal losses have been
minimized, while the reliability have been enhanced. The APS-524 has an input interference
filter and a power factor compensation system, as well as short-circuit and overload
protection.
Precision voltage control, microprocessor-based battery charge status control and automatic
cut-off of the battery function in case of its excessive discharge, enable the battery to be used
longer without any risk of being damaged. It is recommended that two series-connected 12 V
lead batteries, 17 Ah capacity each, be used for operation with the APS-524.
The APS-524 is fitted with four LEDs, which indicate: the mains supply and battery condition,
current overload, and excessive temperature rise. The detected troubles are signaled on the
four OC type outputs and may be additionally signaled by the buzzer. During normal
operation of the APS-524, the signaling outputs are shorted to ground (0V), but when a fault
occurs, the respective output is cut off from the ground. The tamper contact, installed on the
housing, makes it possible to include the APS-524 into the tamper circuit of the alarm
system.
1. Power supply description
Four LEDs are provided on the power supply housing:
1 – [MAINS](green):
ON – normal operation, with 230 V AC voltage present on the input,
OFF – no 230 V AC voltage or F1 fuse blown.
2 – [BATTERY](green):
ON – battery voltage OK,
blinking – battery voltage drop below 22 V,
OFF – no battery or F3 fuse blown (6.3 A).
Note: If there is no load at the power supply output, the LED indication can be
unstable. For a proper battery state indication, at least 200 mA load of the output
is required.
3 – [OVERLOAD] (yellow):
OFF– normal operation.
ON – current consumption in excess of 5 A.
4 – [TEMPERATURE] (red):
OFF – normal operation
blinking – elevated working temperature (above 45 °C) if there is no fan, or fan
trouble (if the fan is installed).
ON – dangerous working temperature (above 65 °C), which may cause
damage to the power supply unit.

2 SATEL APS-524
The APS-524 construction enables to connect a fan, which ensures air circulation that
decreases operation temperature. The fan should have an impulse output, which indicates its
correct operation. When power supply temperature reaches 45 °C, the processor turns on the
fan and, if there is no proper fan rotation, the [TEMPERATURE] LED starts blinking. When the
temperature reaches 65 °C the red [TEMPERATURE] LED goes on and the AWT output goes
into active mode (disconnection from common ground). When the temperature drops below
65 °C the LED goes off, and when it drops below 45 °C the fan turns off.
In normal working condition (the room temperature of the environment) the usage of the fan
in not necessary.
If the power supply output is shorted to the common ground (mount failure, cable fault) the
power supply is turned off – all four LEDs start blinking. This situation last until the failure is
removed. The short circuit may damage the F3 fuse in the battery circuit (if the battery was
connected).
Explanations to Figure 2:
1 – F1 mains fuse T3.15 A – input circuit protection.
2 – F3 fuse T6.3 A – protection of battery charging circuit.
3 – battery connecting cables (red +; black -).
4 – pins for setting power supply working parameters – symbol on the electronics
board denotes shorted pins (jumper on), denotes open pins (jumper off). By default,
jumpers are set on all pins.
AC FAIL DELAY – determination of the time that must elapse from the moment of AC
supply failure to the moment of signaling the same on the AWS output
(1800 or 10 seconds). By default, 1800 seconds.
BATT. CHARGE – determination of the battery charging current (1 A or 2 A). By
default, 1 A.
BATT. CHECK – battery test enabled/disabled. Disabling the test does not disable the
battery discharge control feature. By default, the battery test is enabled.
BEEP – audible trouble signal enabled/disabled. By default, the buzzer is enabled.
5 – buzzer – audible trouble signal.
6 – FAN – connector for connection of a typical 12 V fan (e.g. used in computers).
Fig. 1. Fan connector description.
GND – fan ground
+12V – fan supply output
IMP – impulse input (fan rotation)

APS-524 SATEL 3
Fig. 2. View of electronics board.

4 SATEL APS-524
Description of terminals:
230 and AC – mains power supply inputs (230 V AC).
+U – power supply outputs (27.2–27.6 V DC). Total current capacity of outputs
5 A.
COM – common ground (0V).
AWT – alarm output (OC): excessive permissible working temperature.
AWB – alarm output (OC): low battery voltage – below 22 V.
AWP – alarm output (OC): excessive permissible overload current – current
consumption over 5 A.
AWS – alarm output (OC): loss of 230 V AC – output activation delay 1800 s or
10 s.
2. Installation
Prior to commencement of installation, load balance of the power supply should be drawn up.
The current derived from the APS-524 by external devices must not exceed 5 A.
The power supply should only operate while being permanently connected to mains supply.
Hence, before making the connections it is necessary to familiarize with the electric system in
the facility. For powering the device choose the circuit which is always live. The power supply
circuit should be protected with a proper fuse.
Before connecting a device to the power supply circuit from which it will be
powered, make sure the circuit is not alive.
1. Attach the mounting (plastic) pins to the back side of the housing.
2. Mount the power supply housing in selected location and connect all electric leads .
3. Put the APS-524 board on the pins.
4. Fix the LED board to the housing lid with two steel sheet metal screws (green LEDs in
upward position).
5. Connect the 230 V AC power wires to the 230 V and AC terminals of the APS-524.
Connect the grounding wire to the terminal situated inside, on the rear panel of the metal
housing and marked by the ground symbol .
6. Connect the supply cables for external devices to the terminals +U and COM on the APS-
524 board.
7. If necessary, make use of the trouble signaling outputs (e.g. to control relays or connect
to the control panel zones).
Fig. 3. Schematic view of AWS, AWP, AWB and AWT outputs.
AWS, AWP,
AWB, AWT
AWS, AWP,
AWB, AWT
10 k
4.7 k
10 R
BC847B
SMAJ30

APS-524 SATEL 5
8. By putting jumpers on the AC FAIL DELAY pins, set the time delay after which 230 V AC
mains failure will be signaled on the AWS output (This setting specifies also the AWS
output restore time). Possible time delay settings:
1800 seconds – Pins shorted
10 seconds – Pins open
9. Using the BEEP pins, determine, whether the buzzer is to signal troubles (jumper on), or
not (jumper off).
In order to avoid the risk of electric shock, put and remove jumpers only
in deenergized state, i.e. with power supply disconnected.
10.Connect the batteries according to the color markings.
The green LED [BATTERY] lights up as soon as 230 V power supply is on, however the
battery charge status will only be known after a full test, i.e. after approx. 12 minutes. The
battery charge status check is performed every 4 minutes and lasts some ten to twenty
seconds. During the tests, the processor reduces the power supply voltage to approx.
21 V, and the loads are switched over to battery supply. If the battery voltage drops to
approx. 22 V during three consecutive cycles, the APS-524 will report a trouble, and when
the voltage drops down to 19 V, the APS-524 will disconnect the battery to prevent it from
being fully discharged and damaged.
After completion of the test, the LED will remain ON if the APS-524 detects presence of
a charged battery, or will start blinking if the battery is discharged, or will go out, if there is
no battery supply.
Note:If the battery is not detected after reconnection, the power supply circuit will only
detect the presence of the battery on the AWB output when a full test is
completed (approx. 12 min.).
The battery test may be optionally disabled – to do so, remove the BATT. CHECK
jumper. Disabling the test will also deactivate the battery trouble signaling on the AWB
output, however it will not disable the circuit protecting the battery from complete
discharge.
11.Switch on 230 V AC power supply (if all connections have been made properly, the LEDs
[MAINS] and [BATTERY] should come on, while the LEDs [OVERLOAD] and
[TEMPERATURE] should remain off).
12.Then, you can check the trouble control circuits for proper functioning (with BATT.
CHECK jumper on):
Disconnect mains supply – the [MAINS] LED will go out and the APS-524 will start
audibly signaling the trouble. After the time set on the pins has elapsed, the AWS output
status will change. After restoring the mains, the LED will come on with steady light, the
sound will be muted, and – after expiry of the time set on the pins – the AWS output will
stop signaling trouble.
Disconnect battery – after approx. 12 minutes the green [BATTERY] LED will go out
and the APS-524 will start audibly signaling the trouble. The AWB output will signal
emergency condition. Reconnecting the battery will stop the trouble signaling by the LED
indicator and buzzer after approx. 12 minutes.
When the APS-524 has been installed and tested for operation, its housing can be closed.
As the APS-524 has no isolating switch to disconnect the mains supply, it is
important that the user/owner of the device be advised on how it should be
disconnected from the mains (e.g. by indicating the fuse which protects the
supply circuit).

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3. Technical Data
Type of power supply unit........................................................................................................A
Supply voltage............................................................................................................230 V AC
Rated output voltage.....................................................................................................24 V DC
Current capacity....................................................................................................................5 A
Maximum battery charging current ............................................................................1 A or 2 A
Energy efficiency .......................................................................................................up to 88%
Recommended battery ...................................................................................... 2 × 12 V/17 Ah
Load-carrying capacity, outputs: AWS, AWB, AWP, AWT (OC type) .....................max. 50 mA
Operating temperature range (Class I) ....................................................................+5...+45 °C
Electronics board dimensions............................................................................... 233 x 73 mm
Housing dimensions ..................................................................................403 x 323 x 100 mm
Weight (without battery)...................................................................................... approx. 3.4 kg
WARNING
This is a Class A device. It may cause radio interference in residential environment. In such
cases, the user may be required to apply suitable countermeasures.
The control panel power supply unit has been designed for work with lead
batteries or other batteries with a similar charging curve. Using any other
batteries than recommended may cause a blow-up.
The batteries, when used-up, must not be thrown away, but disposed of as required by the
existing regulations (European Directives 91/157/EEC and 93/86/EEC).
The latest EC declaration of conformity and certificates are available for
downloading on our website www.satel.pl
SATEL sp. z o.o. • ul. Budowlanych 66 • 80-298 Gdańsk • POLAND
tel. + 48 58 320 94 00
www.satel.eu