Ground Fault Detect Enable; Enabling Ground Fault Detection - Bosch D9412GV3 Installation Instructions Manual

6 en | Installation
WARNING!
Do not use telephone or electrical ground for the earth ground connection. Use 1.8 mm (14
AWG) to 1.5 mm (16 AWG) wire when making the connection. Do not connect other control
panel terminals to earth ground.
1.5.2

Ground Fault Detect Enable

NOTICE!
To meet UL 864 requirements, enable Ground Fault Detect.
A ground fault is a circuit impedance to earth ground. The control panel has a ground fault
detection circuit that, when enabled, detects ground faults on Terminals 1 to 9 and 11 to 32.
The control panel also detects and annunciates ground faults on any device connected to it.
If a ground fault condition occurs, the keypads display SERVC GND FAULT and the control
panel sends a GROUND FAULT TROUBLE, AREA 1. When the control panel recognizes that the
ground fault condition is corrected, and remains corrected for between 5 to 45 consecutive
seconds, a Restoral Report is sent.
NOTICE!
The D9412GV3/D7412GV3/D7212GV3 Control Panels log and print a Ground Fault event as a
Trouble Point 256 if communicating in Modem IIIa
format, the D7212GV3 generates a Ground Fault (310) event.
1.5.3

Enabling Ground Fault Detection

To enable the Ground Fault Detect Enable feature, lock (close) the S4 Ground Fault Detect
Pin on the control panel (refer to Figure 1.2, Page 6).
Figure 1.2 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.
F.01U.167.105 | 02 | 2010.11 UL Installation Instructions
2
format. If communicating in Contact ID
Bosch Security Systems, Inc.
Control Panels