SENS MicroGenius S2/S4 Technical Manual
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Table 11 – LED Definitions
OFF OFF
AC and DC not applied or charger failed or
alarm/communications circuit board cannot
communicate with main circuit board
AC good, DC good, in Float Mode
AC good, in Dynamic Boost Mode
AC good, DC in current limit (max charge)
AC good, HELIX Eco-Float mode
FLASH LONG-2X SHORT GREEN
AC good, HELIX Refresh Charge mode
AC good, battery commissioning mode active
AC good, battery check in progress
AC good, battery check failure
*SOLID GREEN SOLID RED
AC good, charger fail or overvoltage shutdown
(charger disabled)
AC good, reverse polarity detected on output
*SOLID GREEN SOLID YELLOW
AC good, high or low DC voltage (above/below
alarm setpoint)
*SOLID GREEN FLASHING GREEN/RED
AC good, system DC output good, some individual
charger module(s) in alarm state
*SOLID GREEN FLASHING YELLOW
AC good, low incompatible battery error (charger
disabled)
AC good, output limited by high temperature
*SOLID GREEN DOUBLE FLASH RED
AC good, load sharing DC negative connection
open or load sharing charger address fault
SOLID RED SOLID YELLOW
AC fail, high or low DC voltage (above/below
alarm setpoint)
SOLID RED SOLID RED
AC fail, charger fail or overvoltage shutdown
(charger disabled)
SOLID RED FLASHING YELLOW
AC fail, low incompatible battery error (charger
disabled)
ALTERNATING FLASHING YELLOW
Illegal jumper configuration
Missing or invalid code (boot load required)
ALTERNATING FLASHING GREEN
*AC LED will flash green when charger is in ultracapacitor mode.
8.2. Individual Alarm Relay Contacts
The alarm/communications circuit board offers five alarm discrete Form C contacts. The Form C relay
contacts change state when alarms are activated. Alarm relay assignments are custom configurable to
any of the alarm functions listed in section 8.4
. See charger inside cover label for original factory alarm
relay assignments. See Tables 7-9 for typical alarm relay assignments.
Relays will change state for an alarm on any output on chargers with multiple outputs. The front panel
LCD will indicate which output is in an alarm state. Alarm setpoints are configured separately for each
output using the keypad.
By default, the relay contacts change state 30 seconds after the onset of a fault. The relay delay is
configurable using the front panel keypad (see section 9.10) or the SENS Setup Utility. See section 8.4
for