Bosch PRA-CSE User Manual

184 en | Maintenance and service PRAESENSA
2019.11 | V1.00 | Installation manual Bosch Security Systems B.V.
19.3.3 Multifunction power supply
To replace a defective multifunction power supply PRA-MPSx in a running system proceed as
follows:
Prepare the new multifunction power supply
1. Unpack the new multifunction power supply (same model as the one to be replaced).
2. Supply mains power to the new device.
3. Connect a (laptop) PC to the new multifunction power supply.
4. Start the PRAESENSA Firmware Upgrade Tool (FWUT) and upgrade the device to the
required firmware version; this is the same version as the original device was using.
– See the PRAESENSA configuration manual.
Exchange the multifunction power supply
1. Disconnect all cables from the original device:
– First disconnect the NTC temperature sensor. This will stop charging the battery.
– Then disconnect the battery cables, the negative terminal first, followed by the
positive terminal. Be careful not to short circuit the battery.
– Disconnect all control input and control output connectors.
– Disconnect all Ethernet cables.
– Then disconnect the mains cable. All connected amplifiers will turn off and a
connected system controller too, unless it is redundantly powered from another
power supply.
– Finally disconnect the 48V cables to the amplifiers and the 24V cables to other
devices (if any).
– If present, remove the FSP fiber transceiver from the original device for re‑use.
2. Remove the original multifunction power supply from the rack and put the new device in
the rack.
3. Connect all cables to the new device:
– First connect the 48V from the amplifiers and the 24V cables (if any).
– Then connect the mains cable. The amplifiers and other devices (if any) will be
powered.
– Finally connect the other cables: battery cables, temperature sensor, control inputs
and outputs, Ethernet cables.
– If it was present, insert the SFP fiber transceiver and connect the optical fibers.
4. Connect the PC to the system, either to a spare port of the system controller or to one of
the PRA-MPSx.
5. Go to the System composition web page and click Rediscover to discover the new
multifunction power supply. The multifunction power supply is now discovered but not
yet assigned.
6. The location of the original multifunction power supply is still present and shows the
hostname of the original device.
7. Select under hostname the new hostname of the new multifunction power supply.
8. Press the Submit button on the System definition page to add the device to the
configuration.
9. Press Save and restart to store and activate the new configuration.
10. Acknowledge and reset the faults in the system. If faults associated to the multifunction
power supply can be acknowledged and reset, this means that the connection and
configuration is correct.
11. The new multifunction power supply is now operational.
12. Perform a test by making calls to the zones associated to amplifiers powered from the
new multifunctional power supply and check the audio presence.

Bosch PRA-CSE Specifications

General

Brand	Bosch
Model	PRA-CSE
Category	Security System
Language	English