General Monitors FL4000H, Quick Start Manual

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Model FL4000H
3.8 Powering of the FL4000H
After connecting to a 24 VDC power source, the unit will go through a power up delay of
approximately 15 seconds. The LEDs will blink in alternating red – green sequence, the unit will
output an analog signal of 0mA (3.5 mA with HART or 1.25 mA for HART with small current
enabled) and the fault relay will be in the de-energized state. If the unit is configured with relays
energized, the relays will de-energize for approximately 0.5 seconds. Upon completion of the
power on sequence, the green LED will alternate - on for 5 seconds and off for 0.5 seconds to
indicate a READY status.
3.9 Power up Grounding of the Test and Relay Reset Lines
During power up, grounding the reset relay line for approximately 1 second forces the Modbus
parameters on both channels to go to their default values of: 19,200 Baud, 8-N-1 format, and
Unit ID = 1.
During power up, grounding the test line for approximately 1 second forces the unit to use the
dipswitch settings rather than use the settings stored in the flash memory. These settings are
for the energized/de-energized relay state, the alarm delay, and the unit sensitivity.