Bosch D125B, Руководство по установке

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4 en | Operation Powered loop interface
2018.06 | 4.0 | F.01U.036.340 Installation instructions Bosch Security Systems, Inc.
* Legacy products have not been investigated to comply with the latest UL864 edition.
** indicates products which are not UL Listed for commercial fire applications.
Figure 2.1: D125B Powered loop interface
1 Power-limited, supervised switched
auxiliary power (detector reset)
2 Supervised connection to protective
zone or point on the control panel
3 Supervised connection to protective
zone or point on the control panel
4 Connect to only one common at the
panel
5 Connect to only one common on the
control panel
6 Power-limited, supervised negative to
B loop detectors
7 Power-limited, supervised negative to
A loop detectors
8 Power-limited, supervised positive to B
loop detectors
9 Power-limited, supervised positive to A
loop detectors
10 Earth ground
11 Mounting holes
3 Operation
The module can be powered from the control panel’s switched auxiliary power output or from
an external auxiliary power supply. Currently, the control panels can only supply 12
VDC, but
external power supplies can provide either 12 VDC or 24 VDC.
For wiring details, see Wiring, page 6 .
3.1 Power from the control panel
In this mode, the control panel switched auxiliary power output supplies regulated,
power‑limited, supervised 12
VDC power to the module. The switched power output allows all
detectors connected to the module to be reset by interrupting power using the Reset Sensor
command. See
Wiring for 12 VDC power supplied by the control panel, page 7 .