User Instructions

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3. Connect the RJ45-RJ45 cable from the call station of the "CST BUS" to the "MIC" jack on the power supply
board.
Fig. 4. Connecting the call station to the power supply.
4. Mount the mounting brackets to the call station paying attention to their correct position in relation to the
right "P" and left "L" sides.
5. Connect the transmission cable (from the DSO „CST-BUS” control panel) to the "IN" connector on the
power supply board (mark 1..8).
6. If needed, connect the device cables to the technical outputs:
- EPS FLT; technical output of 230V AC power failure indication
- PSU FLT; technical output of power supply failure indication.
- APS FLT; technical output of battery failure indication
- ALARM; technical output of collective failure of the PSU
When technical outputs require reverse operation – move the configuration jumpers
(Table 1, point 8).
7. Insert the battery in the designated compartment of the enclosure (Fig. 3 [3]). Connect the battery with the
power supply board paying special attention to the correct polarity.
8. Mount the temperature sensor near or directly on the battery.
9. Switch on the 230V AC supply. The corresponding LEDs on the front panel of the power supply should be
lit: green AC and green DC.
10. Once the tests and operation control have been completed, the enclosure can be locked
2.3. The procedure for checking the power supply.
1. Check the indication displayed on the front panel of the power supply unit:
a) The AC LED should remain lit to indicate the presence of the supply voltage.
b) The DC LED should remain lit to indicate the presence of the output voltage.
c) LED light DAMAGE off.
2. Check the output voltage after 230V AC power failure.
a) Simulate the lack of 230VAC mains voltage by disconnecting the appropriate switch in the
electrical installation.
I. The AC LED should go out
II. The DC LED should remain lit to indicate the presence of the output voltage.
III. After approximately 10s the EPS and ALARM technical outputs will change status into
opposite.
IV. Acoustic indication will be activated.
b) Turn on the 230V AC mains voltage again. Indication should return to the initial status within a
few seconds.
3. Check whether the lack of continuity in the battery circuit is properly indicated.
a) Disconnect the battery cable (230V AC mains supply) during normal operation of the power
supply unit.