ASCOM Ascotel 2025 System Manual page 785

ascom Ascotel 2025/2045/2065
Fitting and Connecting the UPS-12V Module
Hazard:
Once the UPS-12V module is connected to the battery or the UPS-12V
module is connected to the battery, there are hazardous voltages inside
the PBX housing. Make sure the cover in the power supply area is
securely closed before connecting the battery.
1. Disconnect the PBX from the power supply.
2. Remove the cover of the power supply area.
3. Mount the angle bracket with the provided screws.
4. With the jumper on the UPS-12V module, set the required charge current lim-
iting (1 A or 2 A).
5. Fit the battery cable without battery connected to the UPS-12V module. Make
sure the polarity is correct!
6. Connect the UPS-12V module with the PBX. To do that connect the cable to
the primary connector and secondary connector (see Fig. 4.12).
7. Use the provided screws to fasten the UPS-12V module to the angle bracket.
8. Secure the cover to the power supply area.
9. Connect the PBX to the 230 VAC power supply.
10. Connect the battery. Make sure the polarity is correct!
11. Check the UPS functions by interrupting the power supply a few minutes. The
PBX must continue to run without interruption. After switching off the power
supply, the event message "PBX on DC power supply" must appear.
Note:
When disconnecting a system with a UPS-12V module from the power
supply, the battery must always be first disconnect. When connecting,
always connect the mains voltage first and then the battery.
4.14 PBX Power Supply HBT_20321104_04/B0_en