SENS MicroGenius S2/S4 Technical Manual
26
alarm definitions.
8.3.
LCD Panel
A two line by twenty-character LCD is included with every charger and provides precision digital
ammeter and voltmeter as well as information about input, output, charging status and alarms. The
voltmeter is accurate to +2% and the ammeter is accurate to +5%. The display is readable with or
without ambient lighting and operates automatically, requiring no operator intervention.
The LCD is fully operational from -20
°
C to +40
°
C. It may temporarily become unreadable below -20
°
C but
should recover as temperature increases. LCD life is reduced with sustained operation above 65°C.
8.4.
Alarm Definitions
See Table 11 for a description of LED indicator activity. Unless noted otherwise, the following alarms are
displayed on the LCD panel. LEDs indicate an alarm on any output on chargers with multiple outputs. The
front panel LCD will indicate the alarm and which output is affected.
8.4.1.
AC Line Failure
Indicates AC input voltage is not applied or is outside of allowed 90-265 VAC range. Activates solid
red AC LED. Alarm/communications circuit board AC FAIL relay contacts change to Fail state after
delay when alarm is assigned to relay contacts.
8.4.2.
High DC Voltage
Indicates DC output voltage is above factory alarm setpoint (see Table 12) or the configured level
if setpoint is adjusted using keypad or SENS Setup Utility. Activates solid yellow DC LED.
Alarm/communications circuit board HIGH DC relay contacts change to Fail state after delay when
alarm is assigned to relay contacts.
Table 12 – Factory High DC Setpoints
Configuration Code*
Battery Type
High DC Setpoint
12V
24V
GEN
AGM
16.00
32.00
FLA
16.00
32.00
NCD
16.00
32.00
HCB
16.00
32.00
Ultracapacitor
17.00
28.00
MAR
VRLA
14.64
29.28
AGM
14.82
29.64
NCD
16.00
32.00
NGN
VRLA
14.64
29.28
AGM
14.82
29.64
NCD
16.00
32.00
PSP
N/A
13.20
26.40
*Configuration Code displayed on charger label
