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)