Bosch D720B Especificaciones descargar pdf (Pagina 6)

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F.01U.167.105 | 02 | 2010.11 UL Installation Instructions Bosch Security Systems, Inc.

1.5.2 Ground Fault Detect Enable

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.

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)

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.

NOTICE!

To meet UL 864 requirements, enable Ground Fault Detect.

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. If communicating in Contact ID

format, the D7212GV3 generates a Ground Fault (310) event.

Callout Description

1 S4 Locked (Closed). Control panels detects ground faults.

2 S4 Unlocked (Open). Control panel does not detect ground faults.

1 2 3 4 5 6 7 8 9 10 11 ... 27 28

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Bosch D720B Especificaciones Pagina 6