Unipower Sageon Micro Power Module User Manual

Troubleshooting Sageon Micro Power Module Manual
PM990-4207-00, Rev 6
6-1
6. TROUBLESHOOTING
Symptom Likely Causes Action
Rectifiers do not power up – no
LEDs lit on front panel
AC power is not connected or
internal fuse blown or rectifier not
properly plugged in.
Re-insert rectifier(s) and make sure
the rear connections are good.
Confirm that AC power is available
to the rectifier backplanes. Replace
the recti
fier module if the unit is
suspected to have failed.
No output current from rectifiers and
the Green LED on each rectifier
blinks occasionally
AC power either <70VAC or
>320VAC. An internal relay will be
heard open and close periodically if
the AC voltage is excessive.
Check that the AC supply voltage
and connection arrangement are
correct and match the expected
system supply wiring.
Over-
temperature alarm or fan
failure alarm present
High ambient temperature.
Fan air intake/exhaust vents are
blocked or a fan is jammed with a
foreign object or excessive dust.
Check the ambient temperature and
improve site cooling if possible.
Check and remove obstructions from
the air vents. Replace the module or
remove and replace the fan
assemblies in the module (requires
only that the rectifier lid be
removed)
LVDS will not close
One or more batteries are reverse
polarity.
No battery is connected to the
battery distribution module.
Fuse link blown in the battery
distribution module (BDM).
Controller setting for
LVDS is
“Open”.
Controller
setting for LVDS is
“Auto” and the DC bus voltage was
< LVDS trip threshold and has not
increased to the float voltage.
Check battery wiring polarity.
Connect a battery.
Check that the Controller is powered
up even when no rectif
ier is
operational. If not, service the fuses
in the BDM.
Change the Controller LVDS setting
to “Closed” or “Auto”.
Power up the rectifiers and reduce
the load until the bus voltage
increases to the float voltage.
Load or Battery circuit breaker
alarm does not set when the breaker
is opened or is incorrectly alarmed
as battery switch instead of load trip
or visa-versa.
No battery or load is connected to
the circuit breaker connection.
Alarm link in BDM is incorrectly
configured.
Check load and battery connections
to the BDM and that the alarm links
are correctly configured.
Battery or Ambient temperature
sensor reading is indicated as “Not
Available”
Sensor / cable faulty.
Sensor connector reversed.
No sensor installed.
Turn cable connector around and
reconnect.
Replace faulty sensor assembly.
Battery current indicated does not
match independent measurement.
Full-
scale current of the DC hall
effect current transducer is
incorrectly set and will result in an
error larger than +/- 5% at more than
50% full-scale current.
Change the setting of the “FS Batt
Curr” value in the Base Menu of
Controller to the correct full-scale
value.

Unipower Sageon Micro Power Module Specifications

Input Power

input voltage	85-300VAC
inrush current	<9A RMS per rectifier
power factor	>0.98 for >50% output power

Output Power

output voltage for -48VDC systems	adjustable range 42.0V to 59.5V
output voltage for +24VDC systems	adjustable range 21.0V to 30.0V
efficiency for 48VDC systems	>90% at 100% output power

Environmental Conditions

operating temperature	-40°C to +70°C
full power temperature range	-40°C to +55°C
storage/transport temperature	-40°C to +70°C

Mechanical Dimensions

width	483mm (19”)
depth	355mm (14”)
height	88mm – 352mm (3.4” – 13.6”) depending on configuration