Installation | en
9
Bosch Security Systens, Inc.
UL Installation Guide
2016.07 | 04 | F.01U.291.483
Figure 2.2: Ground Fault Detect (S4)
Callout - Description
1 - S4 Locked (Closed). Control panels detects ground faults.
2 - S4 Unlocked (Open). Control panel does not detect ground faults.
2.5.4
Ground Fault Impedance Specifications
The table below provides the impedance specifications for detecting ground faults when any
terminal or field wiring is shorted to ground.
Impedance
Control Panel Detects Ground Fault
≤ 300 Ω
Yes
300 Ω to 200 k Ω
Detection depends upon the terminal
≥ 200 k Ω
No
Tab. 2.1:
Ground Fault Impedance Specifications
2.5.5
Locking the Reset Pin
Locking the reset pin disables the control panel. When the reset pin is locked, the control
panel is disabled. CALL FOR SERVICE appears in some keypad displays (SDI2 keypads display
enter Installer Passcode) when the pin is locked down.
On-board outputs (Terminals 6 and 7) and off-board outputs deactivate when the control
panel is disabled. Terminal 8 has power when the output is deactivated. Activation interrupts
power at that terminal. The on-board output (Terminal 8) remains deactivated when the reset
pin is locked in the disable position.
Unlocking the reset pin from the locked position resets the control panel. The control panel
resets all its timers, counters, indexes, and buffers. Any points that restore after a reset do not
generate Restoral Reports.
If the reset pin is placed in the Lock position, and all areas are armed, the control panel will
not answer RPS over a phone line unless the Answer Armed program item has a value other
than zero in it. No entry is required for network or RPS Enhanced direct connection
communication. Refer to RPS Parameters in RPS Help.
Summary of Contents for D7412GV4
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