SENS MicroGenius S2/S4 Technical Manual
60
AC LED DC LED Symptom
Possible Causes
Recommended Actions
3.
Communication cable is plugged
into the wrong charger port
4.
Wiring is incorrect
5.
Unsupported or incorrect J1939
command
6.
Incorrect address or address
conflict
using the keypad if incorrect address.
2.
Verify that a terminator is installed in port 1 or 2 of
display board J2 (note that a terminator is not
required if the charger is not at the end of the
communication bus).
3.
If step 3 didn’t resolve the issue, verify that
communication cable is connected to port 1 or
port 2 of J2 on the display board. Correct cabling
as required.
4.
If communication cable is connected correctly,
verify that cabling is correct and the J1939 Data
High goes to pin 1 of J2 and that J1939 Data Low
goes to pin 2 of J2.
5.
If cable wiring is correct, verify that requested
command is supported by SENS charger per J1939
table in charger manual.
6.
Check for address conflicts on the network
*SOLID
GREEN
FLASH or
SOLID
GREEN
Basic J1939
communications work but
SENS extended commands
don’t work
1.
SENS extended J1939 commands
are not enabled
1.
Enable SENS extended J1939 commands using
setup utility
*SOLID
GREEN
FLASH or
SOLID
GREEN
Unable to Communicate
using MODBUS
1.
No communication bus
termination installed
2.
Communication cable is plugged
into the wrong charger port
3.
Wiring is incorrect
4.
Incorrect MODBUS settings
(baud rate, type (RTU or ASCII),
address)
1.
Verify that a terminator is installed in port 1 or 2 of
display board J2 (note that a terminator is not
required if the charger is not at the end of the
communication bus).
2.
If terminator is installed, verify that
communication cable is connected to port 1 or
port 2 of J2 on the display board. Correct cabling
as required.
3.
If cable is connected correctly, verify that cabling is
correct and that D1 (A) goes to pin 5 of
J2 and that Modbus –D0 (B) goes to pin 4 of J2.
4.
If cable wiring is correct, verify that charger and
application MODBUS settings are as required.
Adjust settings using setup utility as required.
*SOLID
GREEN
SOLID
RED
AC good, charger fail or
overvoltage shutdown
1.
Charger has experienced an
unexpected fault
2.
Programmed setting are
incorrect (OVSD set too low)
3.
Charger module failure
1.
Remove both AC and DC power for 1 minute, then
reapply power.
2.
If fault remains, check overvoltage shutdown
settings and again remove both AC and DC power
for 1 minute, then reapply power.
3.
If steps 1 and 2 don’t resolve issue, a charger
module failure is the likely cause. Replace module.
*SOLID
GREEN
FLASHING
RED/YELL
OW
Charger’s output is not
enabled
1.
A battery is connected to the
charger output with reverse
polarity
1.
Correct DC polarity applied to DC output terminal
block/breaker.
*SOLID
GREEN
SOLID
YELLOW
AC good, high battery
voltage
1.
Alarm setpoint incorrect for
application
2.
DC voltage is high due to an
external source such as an
alternator
1.
Check that charger battery settings and alarms are
set appropriately for the application and battery
under charge.
2.
If settings and alarms are correct, check and
correct battery / load voltage (consider battery
surface charge, alternator, and any connected
equipment).
*SOLID
GREEN
SOLID
YELLOW
AC good, low battery
voltage
1.
Alarm setpoint incorrect for
application
2.
Battery discharged or defective
1.
Check that charger battery settings and alarms are
set appropriately for the application and battery
under charge.
2.
If settings and alarms are correct, check and
correct battery / load voltage (consider loads and
any connected equipment).
*SOLID
GREEN
FLASHING
GREEN/
RED
AC good, system DC output
good, some individual
charger module(s) in alarm
state
1.
One or more system chargers
has an alarm.
1.
Troubleshoot issue using fault code from individual
charger module(s).
*SOLID
GREEN
FLASHING
YELLOW
AC good, low incompatible
battery error (charger
disabled)
1.
Voltage range improperly set
1.
Check that charger voltage range is set correctly
for the battery. After making any correction to the
range setting, remove both AC and DC power for 1
minute, then reapply power.
*SOLID
GREEN
FLASHING
GREEN/YE
AC good, output power
limited
1.
Charger power is reduced to
protect charger due to high
1.
Reduce operating environment temperature.
Charger will automatically increase power as
