Earth Fault Level; Input Monitoring (Resistive Eol/Capacitive Eol) - Honeywell NFS Supra Installation And Operating Manual

NFS Supra

5.4.8 Earth fault level

The system allows to set the earth fault more sensitive, in order to indicate earth leakage fault,
with small potential differences between earthed points or when the devices insulation or the
cable zones do not have the expected values and thus detect in advance the risk of a earth
leakage.
The system can detect earth leakage due to auxiliary 24 Vdc connections or to external devices
communications. After check that there is no earth leakage, the earth fault level can be adjusted
to Low Sensitivity.
Earth fault level configuration:
Select the earth level menu by pressing the (EVACUATE=ON) key
The cyclic change of the function is made by pressing the RESET key.
Led 1 Alarm (Red) = ON = Low Sensitivity (By default)
Led 2 Disablement (Yellow) = ON = Medium
Led 3 Test (Yellow) = ON = High Sensitivity

5.4.9 Input monitoring (Resistive EOL/Capacitive EOL)

The system can monitor the inputs with a 47µF capacitor and the sounders outputs with diodes
to be more stable to EMC and to reduce power consumption in standby. To backward
compatibility, it is possible to configure the input monitoring, between capacitive (Diode in
sounders and 47µF capacitors in zones) or resistive (4k7 Ω).
Input monitoring configuration:
Select EOL input monitoring menu configuration by pressing the (KEYPAD ACCESS=ON +
EVACUATE=ON)
The cyclic change of the function is made by pressing the RESET key.
Led 1 Alarm (Red) = ON = Resistive EOL 4K7
Led 2 Disablement (Yellow) = ON = Capacitive EOL 47µF/Diode (By default)
HLS-MN-025 v.04
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Earth level
change
Reset push-button: Change Option (Access level 3 - Configuration)
Capacitive/
Resistive
Change
Reset push-button: Change Option (Access level 3 - Configuration)
Configuration
Installation and Operating Manual
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