Non-Point Faults; Fault Not Found - Simplex 4100ES Installation Manual

17.3.1

Non-Point Faults

A non-point fault indicates a ground that cannot be traced to an addressable point (for example, a shield or an audio riser). The earth fault
in this example is not occurring at the audio controller but somewhere in the riser:
CARD 17, ANALOG AUDIO CONTROLLER
AUDIO RISER 1 EARTH FAULT
Non-point faults can be displayed for each of the following items:
• Shield (Flex 50/100 W Amplifier)
• Audio Riser (Digital./Analog Audio Controller; Local Mode Transponder; may also annunciate as "DAR SECONDARY" (Digital Audio Riser
Secondary) on transponder)
• Remote Mic 1 and Push-to-Talk line (Digital./Analog Audio Controller) (other remote mics are not supported)
• Channel Output (IDNet Card; MAPNET Interface Card)
• RUI Channel (Master Controller Card)
• Channel 1 to 3 (TrueAlert Power Supply)
17.3.2 Point Faults
A point fault indicates a ground at a specific addressable point. The example below is a location earth ground search result, where 3 is the
card address, 10 is the point number, and 0 is the sub-point number (not used):
CARD 003, FLEX 50 AMPLIFIER
3-10-0 EARTH FAULT
Point faults can be found at any point in the system that connects to field wiring.
Some IDNet channel point fault examples are illustrated below.
Fault not cleared. The message below shows that an IDNet channel that has been isolated for fault detection still has the earth fault:
CARD 2, IDNET CARD (250 POINTS)
M1, EARTH FAULT SEARCH FAULT CLEAR FAIL
Fault between channel output and first isolator. The message below shows a fault between the IDNet channel output and the first
isolator on the line:
CARD 2, IDNET CARD (250 POINTS)
M1, CHANNEL OUTPUT EARTH FAULT
4009 IDNet NAC Extender/TrueAlert Addressable Controller faults. The message below shows a fault detected on the 4009 IDNet
NAC Extender before the repeater connected to that circuit is turned on:
CARD 2, IDNET CARD (250 POINTS)
M1-18, 4009A NAC EARTH FAULT
Conversely, the following example shows a fault detected after the repeater connected to that circuit is turned on:
CARD 2, IDNET CARD (250 POINTS)
M1-18, 4009A REPEATER EARTH FAULT
IDNet isolator fault. The message below shows a fault detected after the IDNet isolator was turned on:
CARD 2, IDNET CARD (250 POINTS)
M1-3, IDNET ISOLATOR EARTH FAULT
17.3.3

Fault Not Found

If the message in the lower right corner of the LCD reads FAULT NOT FOUND (for a Location Earth Fault Search) or FAULT CLEAR FAIL (for
an IDNet Channel Earth Fault Search), it means the search could not locate the fault, but it acknowledges that a fault exists.
There are three main possibilities behind this message:
• There are one or more internal wiring earth(s) in the system.
• There are system defects (hardware or software, such as a failed isolation circuit).
• An intermittent earth exists in the system (it occurs inconsistently and is therefore difficult to track via diagnostics).
• The cable to the service port may be grounded due to the remote PC's 3-prong plug. Use a non-grounded plug adapter to the remote
PC to get rid of the earth ground.
page 138
4100ES Fire Alarm System Installation Guide
574-848 Rev. BQ