Bosch D7024 User Manual

D7024 | Operation and Installation Guide | 2.0 Overview
10 Bosch | 7/05 | 31499J
The 24 VDC current requirements for the D7030, D7033 and D7035 are shown at 75% of the 12 VDC level shown
on the specification sheets for these models. The D7024 regulates 24 VDC power from the battery to 12 VDC for
these accessories.
The required battery size to support the system can be calculated using Ta b l e 3 and Ta b l e 4 .
2.11 Standby Current Load
1. Use Ta b l e 4 to estimate the size of the battery required to support the standby load.
2. Use the second table to estimate the size of the battery required to support the alarm load.
3. Add the results for the total battery size.
4. Select the next larger standard battery for the system.
If the results show a requirement for a battery over 40 Ah, reduce the current or add an external power supply.
Refer to Ta b l e 5 on page 11 for the units in amp hours (Ah). The calculations include a 20% derating factor.
D7032 8-Point LED Annunciator Expander 1 mA 90 mA
D7033 Keypad 80 mA 100 mA
D7039 Multiplex Expansion Module 150 mA 150 mA 150 mA 150 mA
D7042/B Addressable 8-Point Input 8 mA 8 mA
D7050 Photo Smoke Detector 0.50 mA 0.56 mA
D7050-TH Photo Smoke Detector 0.50 mA 0.56 mA
D7045 Multiplex Pull Station 0.55 mA 0.55 mA
D7044 Multiplex Single Input Fire 0.55 mA 0.55 mA
D7052 Multiplex Dual Input Fire 0.55 mA 0.55 mA
D7053 Multiplex I/O Module Fire 0.70 mA 0.70 mA
Smoke Detectors
Bells, Horns, and so on
Other Sensors
Other
Grand Total
Standby Current
Grand Total
Alarm Current
* Add 30 mA for each relay activated.
Table 3: Standby Battery Capacity Calculations
Table 4: Calculating the Required Battery Size
Grand Total Standby Current (in amps) CS
Total Hours of Standby Required (24 or 60) HS
Total Standby Capacity (multiply CS X HS) TS= CS X HS
Grand Total Alarm Current (in amps) CA
Total Hours of Alarm Time Required (usually 0.083 or 0.25) HA
Total Standby Capacity (multiply CA X HA) TA= CA X HA
Total Capacity Required (add TA + TS) TC = TA + TS
Required Capacity with 20% Derating (TC X 1.2) C = TC X 1.2

Bosch D7024 Specifications

General

Brand	Bosch
Model	D7024
Category	Control Panel
Language	English