Samlex America SEC-4825BRM - Manual (Page 28)

28 | SAMLEX AMERICA INC. SAMLEX AMERICA INC. | 29
Section 8 | troubleshooting Guide
1. GENERAL
Symptom Possible Cause Remedy
ON/OFF Switch is ON
and is lighted. One or
more “PSM Status” LED
(s) is not lighted
Associated Power supply Module has
become defective.
• The unit will still operate normally
as the remaining working module(s)
will share a higher load. If backup
battery is connected, it will supply
balance load if the load is higher
than the combined capacity of the
remaining working module(s)
• If backup battery is not connected,
the output voltage will drop if the
value of load current is more than
the rated combined current limit
values of the remaining working
module(s)
Remove the defective module(s) and
replace with new module(s)
ON/OFF Switch is ON
and is lighted. One or
more “PSM Status”
LED(s) fl ash
• The output voltage of individual
modules is not equal
• Internal static load is not suffi cient
for effective activation of Master/
Slave operation for forced current
share
• Forced Share Control Circuitry of
the module(s) is defective
• Adjust the output voltage of all the
modules to exactly 55V as explained
in the Adjustment Procedure at
page 15
• If after carrying out the above
adjustment, the problem still exists
under no load, then apply 5A load.
If fl ashing stops under load, it means
that the internal static load is not
suffi cient for effective activation of
Master/Slave operation. Disregard
fl ashing under no load as the
module(s) will operate normally
• If the fl ashing continues even after
loading, the module(s) are defective.
Please call Technical Support
2. OPERATION AS A SIMPLE POWER SUPPLY - ONLY LOAD IS CONNECTED.
NO EXTERNAL BATTERY AND NO BATTERY BACKUP.
Symptom Possible Cause Remedy
ON / OFF Switch is ON
• Switch is NOT lighted
• No DC output
No AC power from the
AC outlet
AC Input Breaker on the unit is
tripped (2, Fig 2.1)
Check AC power is available at the AC
outlet. Breaker feeding the AC outlet may
have tripped. Reset the breaker
If the breaker trips again, the input
section is damaged. Please call Tech
Support
11001-SEC-4825BRM-0114.indd 28 14-01-07 1:15 PM