SAMLEX AMERICA INC. | 59
TAbLe 9.2: PRoTeCTIonS
SYMPToM
“Status” LeD -
GReen
“Fault”
LeD - ReD
buzzer Alarm
Remarks
Bad Battery:
i) DC input voltage < 5v for G4-2012A or
< 10v for G4-2524A/G43524A
ii) External DC input fuse blown due to over-
load / reverse polarity (AC input is available)
CAUTIon! Reverse polarity is likely to cause
permanent damage and is not covered by
warranty.
OFF
ON
Constantly ON
•
LCD displays "Bad Battery"
•
Disconnect AC input power
•
Disconnect DC input connection
•
Recharge battery using external
charger/replace battery / fuse
•
Reconnect battery and AC input
power
Wiring Error
OFF
ON
Constantly ON
•
LCD displays "Wiring Error"
•
AC input wiring from Utility /
Generator wrongly connected to
AC output terminals
•
Connect wiring correctly
Protections And Fault Diagnostics Provided by The LCD Alphanumeric Display
Details of diagnostic alphanumeric messages displayed on the LCD related to critical shut down due to fault conditions are given in Table 9.3 below. More
details on the thresholds for activation of these shut down conditions and associated LED / buzzer activations are given in Table 9.2 on page 57 to 59. When
the unit shuts down, it will be required to be reset manually. To reset, switch OFF the unit, remove the cause of the defect and switch ON again.
In some cases, the unit may get latched and will not switch OFF. In such cases, remove the DC & AC input connections, wait for 5 minutes, reconnect
and then switch ON.
TAbLe 9.3: PRoTeCTIonS AnD ASSoCIATeD LCD DISPLAY MeSSAGeS
Short circuit on AC output side in Utility / Generator Mode AC input gets disconnected due to tripping of Circuit Breaker marked “Charger” (40A
for G4-2012 and G4-2524 and 60A for G4-3524). Pass-through load will be transferred
to the Inverter Section. Inverter Section will shut down due to electronic short circuit
protection.
•
LCD displays: “ Fault Mode, Short Circuit”
Short circuit in Charger Section in Utility / Generator
Mode
The unit will shut down due to electronic short circuit protection if short circuit lasts for
> 10 sec:
•
Transfer Relay will be de-energized:
•
Charging will be stopped
•
AC by-pass output will be shut down
•
LCD displays: Fault Mode, Short Circuit”
Short circuit on AC output side in Inverter Mode
Inverter will shut down due to electronic short circuit protection if short circuit condition
lasts for > 10 sec.
•
LCD displays: “ Fault Mode, Short Circuit”
SECTION 9 |
Protections, Operational
Monitoring & fault diagnosis
