FireClass Prescient III - Link for Earth Fault

EQUIPMENT: FIRECLASS Prescient III WRITTEN BY: RKP
PUBLICATION: OMFCPRES3IN CHECKED BY: AP
ISSUE No. & DATE: 0 02/02/12
PAGE 14 of 43
Of-Line device. Allows backward compatibility
when replacing older systems with this panel.
3.12.1.17. N/C LOW PRESSURE I/P
Switch OFF:- The Gas Low input monitors a
normally open switch, i.e. activated by a 680R
resistor.
Switch ON:- The Gas Low input monitors a
normally closed switch i.e. activated by
disconnection of the 680R resistor.
3.12.2. Link For Earth Fault Monitoring
This is a single jumper link located at the bottom
right of the control board (J22). When present, it
allows the panel to monitor for earth faults on the
cables coming into the panel. If this link is
REMOVED, it physically isolates the internal
control board from earth, thus disabling the
external earth fault monitoring facility.
3.13 Fault LEDs
SHUTDOWN 3 FAULT
SHUTDOWN 2 FAULT
SHUTDOWN 1 FAULT
ACTUATOR 2 FAULT
ACTUATOR 1 FAULT
EXT SNDER FAULT
SNDER 2 FAULT
SNDER 1 FAULT
AUTO/MAN FAULT
FIELD MR FAULT
PANEL MR FAULT
SLU FAULT
ABORT FAULT
HOLD FAULT
GAS TRAPPED FLT
ISOLATION VALVE FLT
GAS LOW FAULT
GAS RELEASED FLT
CONFIG ON
GAS SIGNAL FLT
MAINS FAULT
BATT/CHARGE FAULT
Twenty-two yellow LEDs are mounted on the control
board to indicate the following faults:
SHUTDOWN 3
FAULT
Illuminates for an open or short
circuit fault on the 3
rd
Stage
monitored Output.
SHUTDOWN 2
FAULT
Illuminates for an open or short
circuit fault on the 2
nd
Stage
monitored Output.
SHUTDOWN 1
FAULT
Illuminates for an open or short
circuit fault on the 1
st
Stage
monitored Output.
ACTUATOR 2
FAULT
Illuminates for an open or short
circuit fault on the Actuator 2
Output.
ACTUATOR 1
FAULT
Illuminates for an open or short
circuit fault on the Actuator 1
Output.
EXT SNDER
FAULT
Illuminates for an open or short
circuit fault on the Extinguishing
Sounder Output.
SNDER 2
FAULT
Illuminates for an open or short
circuit fault on the General Sounder
2 Output.
SNDER 1
FAULT
Illuminates for an open or short
circuit fault on the General Sounder
1 Output.
AUTO/MAN
FAULT
Illuminates for any open or short
circuit fault on the Auto/Manual
Input.
FIELD MR
FAULT
Illuminates for any open or short
circuit fault on the Manual Release
Zone Input.
PANEL MR
FAULT
Illuminates for any open or short
circuit fault on the Panel Mounted
Manual Release.
ABORT FAULT
Illuminates for any open or short
circuit fault on the Emergency Abort
input.
HOLD FAULT
Illuminates for any open or short
circuit fault on the Emergency Hold
input.
GAS TRAPPED
FLT
Illuminates for any open or short
circuit fault on the Gas Trapped
input.
ISOLATION
VALVE FLT
Illuminates for any open or short
circuit fault on the Isolation Valve
input.
GAS LOW
FAULT
Illuminates for any open or short
circuit fault on the Gas Low input.
GAS
RELEASED FLT
Illuminates for any open or short
circuit fault on the Gas Released
input.
SLU FAULT
Illuminates for a fault on any Status
Lamp Unit.
CONFIG ON
Illuminates when either the CONFIG
I/S INPUTS or the CONFIG SLU
DIL switch is in the ON position. It
indicates that the EEPROM on
control board is write-enabled.
GAS SIGNAL
FLT
Illuminates for any open or short
circuit fault on the Gas Released
Signal output.
MAINS FAULT
Illuminates if the AC mains input
voltage to the power supply is lost
or is less than the required
minimum for correct operation of the
power supply.
BATT/CHARGE
FAULT
Illuminates for any of the faults
described in section 3.11.
The General Fault LED on the Display board also
pulses for any of the above faults.
3.14 Internal Buzzer
The internal buzzer provides an audible indication to
compliment the visual indications provided via the
LEDs on the panel. The buzzer has various modes
as follows:
1. Fault Indication - Pulse, 1 second On, 3
seconds OFF
The buzzer can be silenced.
2. Alarm Indication – Pulse, 1 second On, 1
second OFF
The buzzer can be silenced.
3. Buzzer Pulse End Of Delay - Pulse, ½
second On, ½ second OFF (Optional)
The buzzer cannot be silenced.