Fault Status; Overrange Status - Prosense DPX Series User Manual

6.4 Fault Status:

The panel reports FAULT status in below cases:
• In case any of the detector connections lost
• In case any of the detector measurement level goes below minimum level
• In case any of the detector goes in to fault state
• In case any panel self-test routine reports a fault
• In case panel main power lost and while panel is working with battery power
• In case panel main power supply fails
Fault status has been detected by panel when an input signal is 2mA for detectors connected
to 4-20mA analogue input channels. Detectors connected to MODBUS channels provide fault
state via digital communication. Panel will activate FAULT relay and FAULT LED in case of any
fault. Panel will also activate Fault LED for related zone if the fault status detected on a
detector channel. The fault status signal level for analogue channels can be defined by user.
Panel will activate SYS-FAULT LED if panel cannot manage its own state. The FAULT Relay will
be activated at same time.
Fault relay is normally energised, and it will be de-energised when any of the internal fault
detection measures detects a fault. The Fault LED will be activated also when line power is
lost and system runs with battery power. It is also possible to get an alarm when control
panel totally loses the power.

Overrange Status:

6.5
The panel reports overrange status in case any of the detectors reported measurement
higher than defined measurement range. This status has been detected by panel when an
input signal is over range (> 20mA) for analog input channels and modbus connected
detectors provide measurement level or overrange status via digital communication. The
overrange status signal level for analogue channles can be defined by user.
Overrange status is reported on display with "OVRNG" message and OVER RANGE LED on
related zone will be lit. The overrange condition is highes measurement level that panel can
understand and overrange level is higher than alarm levels. The alarm LEDs and relays will be
activated before panel reports overrange condition.
PRS-UM-DP-X-EN-Rev1.0-17.11.2021
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