Bosch B4512 Installation Manual

80 en | System wiring diagrams Control Panels
2018.07 | 16 | F.01U.287.180 Installation Manual Bosch Security Systems, Inc.
Maximum cable lengths
Follow these rules when wiring the SDI2 bus:
– The SDI2 bus requires the use of unshielded cable from 12 AWG to 22 AWG (0.65 mm to
2 mm).
– Refer to the SDI2 device or keypad documentation for the allowable maximum distance
from the control panel.
– Maximum overall cable lengths are listed in the following table:
Cable capacitance Overall cable length Cable capacitance Overall cable length
pF/ft ft m pF/ft ft m
< 17 7500 2286 27 5185 1580
18 7500 2286 28 5000 1524
19 7350 2240 29 4828 1472
20 7000 2134 30 4700 1433
21 6666 2032 31 4516 1376
22 6363 1939 32 4400 1341
23 6086 1855 33 4242 1293
24 5800 1768 34 4100 1250
25 5600 1707 35 4000 1219
26 5385 1641 36 3800 1158
Table18.9: Maximum cable length
Notice!
Use unshielded cable only.
Maximum capacitance of 140nF (140,000 pF) per system. Contact the wire manufacturer for
the capacitance ratings of the wire being used.

Bosch B4512 Specifications

General

Control Panel Type	Hybrid
Wired Zones	8
Outputs	2
Programmable Outputs	2
Onboard Ethernet	Yes
Cellular Communication	Optional
Series	B Series
Partitions	2
Type	Control Panel
Model	B4512
Manufacturer	Bosch
Input Voltage	16.5 VAC
Communication Formats	Contact ID, SIA
Power Supply	16.5 VAC
Backup Battery	12 V, 7 Ah
Operating Temperature	0°C to +50°C
Weight	1.5 kg
Compatibility	Bosch accessories