Specifications

Battery Charger Operation | en 29
Bosch Security Systems B.V. Installation and Operation manual 180110011Aa | V1.1 | 2011.05
8.1.4 Battery temperature compensation
The battery charger has battery temperature compensation. The temperature is measured by
the external temperature sensor (see section 6.6 ).
Figure 8.4 Temperature compensation for Vfloat
The temperature compensation for V
float
is:
For PLN-24CH12: -40 mV /
o
C @ 25
o
C.
For PRS-48CH12: -80 mV /
o
C @ 25
o
C.
8.2 Commissioning the system
Use the following procedure to commission the system:
1. Switch-on the mains circuit breaker (battery fuse breaker is off).
2. Check the output voltage on the main and auxiliary outputs:
– PLN-24CH12: ≈ 27.3 Vdc
– PRS-48CH12: ≈ 54.6 Vdc
3. Switch-on the battery fuse breaker L (Refer to table 6.1 ). After approx. 2.5 seconds the
battery relay is activated.
4. The battery charger is operating correctly when the 3 LEDs on the front panel are green.
If not, refer to the troubleshoot section 9 .
28.5 / 56.9
27.2 / 54.4
26.2 / 52.4
-10-20 0 10 20 30 40 50 60 70
V
float
Temp
NOTICE!
To avoid start-up problems of the battery charger, the main and auxiliary output current
should be < 12 A.