Bosch B9512G - Page 99

Control Panels System wiring diagrams | en 99
Bosch Security Systems, Inc. Installation and System Reference Guide 2016.06 | 08 | F.01U.303.996
You can wire modules via home run, daisy chain, or single level T-tap anywhere on the SDI2
bus.
2 2 2
3
2
2 2
2
4
2
2
2
5
1
2 2
RESETZONEX
TAMPER
SDI2
PWR+/R
A/Y
B/G
COM/B
PWR+/R
A/Y
B/G
COM/B
24
25
26
27
28
29
23
26
SDIx
ire
olice
ting
RESETZONEX
TAMPER
SDI2
PWR+/R
A/Y
B/G
COM/B
PWR+/R
A/Y
B/G
COM/B
25
26
28
29
30
23
27
SDIx
ire
olice
ting
24
ZONEX TMPR
SDIx SDI2
MODULE RELEASE
MOD-2
MOD-1
Figure18.25: SDI2_Wiring_Recommendations
Callout ᅳ Description
1 ᅳ Control panel
2 ᅳ SDI2 device (module or keypad)
3 ᅳ Daisy chain wiring
4 ᅳ Single-level T-tapped wiring
5 ᅳ Home run wiring
Notice!
There can only be a difference of 2 volts (maximum) between the AUX power terminals of the
control panel or power supply and the device for the modules and keypads to work properly
under all conditions.
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.