Supply Faults; Earth Faults; Double Address; System Fault - Zeta NPAD 2 Installation Manual

PREMIER AD INSTALLATION MANUAL.
Check that the base contacts are clean and free from dirt & corrosion
If possible, try a replacement head (remembering to set the correct address)

15.4 SUPPLY FAULTS

a. BATTERY FAULT
Loss of Battery power – Remedy
i.
ii.
b. CHARGER FAULT
Loss of Mains power – Remedy
i.
ii.
iii.
c. LOW BATTERY
Low Battery voltage detected – Remedy
i.
ii.
iii.
Other possible causes of supply faults are:-
Wrong Charging Voltage.
The charging voltage should be 28.3V off load at 22-24
potentiometer VR1
Overcharged Batteries.
Remove the batteries and measure the voltage. If it is reading over 27.4 then the batteries
are overcharged. Try to run the panel on batteries only for half an hour or so to try to
discharge the batteries. If this doesn't solve the problem, replacement batteries will be
required.

15.5 EARTH FAULTS

An EARTH fault indicates that something is shorting to earth
(usually through the cable screen). Disconnect the earth
screens one at a time to determine the problem line.
(Note: connecting other equipment , eg an oscilloscope , to
the panel can give an earth fault)
The Screen will indicate if it is a Positive or Negative voltage shorting to earth (Earth Fault Pos or
Earth Fault Neg).
***DO NOT DISCONNECT THE MAINS EARTH CONNECTION. THIS WILL CAUSE A PROBLEM
WITH THE PANELS OPERATION***

15.6 DOUBLE ADDRESS

This indicates that a double address has been detected. This usually happens if a head is replaced
during maintenance, and its address has been wrongly set. The panel will report 2 fault addresses,
one will be the double address, and the other will be a missing device. As a further aid to finding the
fault, the panel will light the LEDs of any detectors with a double address (Call points, Sounders & I/O
units will not be indicated as they have no panel controlled LED to light up)

15.7 SYSTEM FAULT

A system fault is an abnormal microprocessor running condition due to various unexpected
phenomena.
This will result in the panel attempting to correct itself. Should this fault occur, the System Fault LED,
General Fault LED, General Fault relay and fault internal buzzer will be constantly active until the
control keyswitch is turned from off position to control enable position. This should cause this fault
condition to reset. If not, consult your supplier.
Approved Document No: GLT.MAN-105A
Issue : 2.02 Authorised: GH
Check battery fuse FS2.
Check that battery connections are secure.
Check mains fuse (Conn 6).
Check that main power is present.
Check charger fuse FS1.
Check battery voltage. (should be around 26-27V)
Check that 2 x 12v batteries are connected in SERIES) to give 24V
Check that charger fuse FS1 is ok
Date: 16/07/2007
Software:PANEL:R1107 & LOOP:R1062
*** FAULT
1 of 1
Battery Fault
*** FAULT
1 of 1
Mains/Charger Fail
o
C. If it has been altered, reset using
*** FAULT
1 of 1
Earth Fault Pos
***
***
***
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