Bosch D125B - Page 9

Powered loop interface Wiring | en 9
Bosch Security Systems, Inc. Installation instructions 2018.06 | 4.0 | F.01U.036.340
5.3.1 Wiring a B Series panel
Figure5.4: Wiring two-wire loops for power supplied by an external auxiliary power supply controlled by a relay and a B Series
panel
1 Power‑limited, supervised switched
auxiliary power from Output A (NC) of
the control panel
1
2 Supervised connection to Zone B
power from an on‑board point of the
panel
3 Supervised connection to Zone A
power from an on‑board point of the
panel
4 Connection with terminal 5 to only one
common on the panel
5 Connection with terminal 4 to only one
common on the panel
6 Power-limited, supervised negative to
B loop detectors (see Wiring sensor
loops, page 6)
7 Power-limited, supervised negative to
A loop detectors (see Wiring sensor
loops, page 6)
8 Power-limited, supervised positive to B
loop detectors (see Wiring sensor
loops, page 6)
9 Power-limited, supervised positive to A
loop detectors (see Wiring sensor
loops, page 6)
10 Earth ground
11 Output A (NC) of the control panel
controls the relay
12 For 24V applications, cut this wire