Terminal 8; Usb Power - Bosch B9512G Installation And System Reference Manual

68 en | On-board outputs
When using Output A or Output B to activate notification appliance circuits in UL Listed fire
alarm applications, install a D192G Notification Appliance Circuit (NAC) Module.
Power restricted for Fire and Combined Fire and Burglary Systems
Fire systems are prohibited from using the battery for supplying alarm power. Use the fire
system power formula that follows to calculate the current available for fire and combined fire
and burglary systems.
Fire system power formula
Calculating the current available at Terminals 6 and 7 for fire and combined fire and burglary
systems:
1.
2.
In formula format: 1.4 A – NSC current required (Step 1) = Alarm current available
Refer to Approved applications, page 102 for module or accessory current requirements
10.4.2

Terminal 8

8
Terminal 8 provides continuous positive (+) 12.0 VDC Nominal power. Output C interrupts the
power at Terminal 8 when activated. Use Terminal 8 to power smoke detectors or other
devices that reset by interrupting power.
Verify and reset Output C
The default program sets Output C (Terminal 8) as a verification and reset output. Refer to
Output Parameters and Point Assignments in the control panel Program Entry Guide for
instructions on programming verification and resetting outputs and points.
Performing a sensor reset at a keypad produces a five-second activation of verification and
reset outputs. The control panel ignores verification and resettable points during the five
seconds.
10.5

USB power

USB
In addition to connecting RPS to the control panel for programming, you can use the USB port
on the control panel to power USB-powered devices.
When enabled, the USB port provides 500 mA of 5 V power, which it draws from the control
panel. Ensure that there is enough power for all the powered devices you want to connect to
the system.
Enable USB power by pressing control panel RESET button 3 times, or using the keypad
Installer menu (refer to [7] USB Power, page 163). The USB POWER STATUS LED lights when
power to the USB is turned on. Press the control panel RESET button 3 times to turn power
off, if desired.
2016.06 | 08 | F.01U.303.996
Add together the current draws for all devices connected to Terminals 3, 26, and 30, and
the ZONEX connector. This is the total current required for the normal standby condition
(NSC).
The current available for NSC is 1.4 A. Subtract the NSC current required calculated in
Step 1 from the NSC current available, 1.4 A. The difference is the alarm current available
for Terminals 6 and 7.
3
Installation and System Reference Guide
Control Panels
Bosch Security Systems, Inc.