User Instructions

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4
1.3 Description of components and power supply connectors.
Table 1. Components of the PCB of the power supply (see Fig. 2).
Componen
t No.
Description
F
BAT
fuse in the battery circuit, T2A / 250V
BUZZER – acoustic indicator
PANEL – Output terminal of the external optical indication
TEMP – battery temperature sensor jack
LED lights - optical indication:
AC – AC voltage
AUX – 24V DC output voltage
PSU – PSU failure
APS – battery failure
ALARM – collective failure
LB – battery charging
F
AUX
fuse in the battery circuit, 24V DC, F500mA / 250V
jumper; switching on acoustic indication
- indication ON
- indication OFF
Description: jumper on, jumper off
Jumper for configuring the relay contacts: NC or NO.
- contact closed in case of failure
- contact open in case of failure (factory setting)
Terminals of technical outputs
EPS – technical output of AC power failure indication
PSU – technical output of power supply failure indication
APS – technical output of battery failure indication
ALARM – technical output of collective failure indication
The 1..8 Connector for connecting the CST BUS
The RJ45 connector for connecting the call station (microphone)
Fig. 2. The view of the printed circuit board of the power supply unit.