MDS Power VTCi320, Инструкция по установке и эксплуатации, Страница: 10 / 12

Troubleshooting
The VTCi320 is designed to provide years of reliable service and to auto-recover in the
event of an operational failure. In the event of malfunction, the unit is fitted with eight LED
indicators and an audible alarm to help diagnose the cause of the issue. Below is a list of
potential issues, and how to repair them.
NO DC POWER DETECTED
IP TEMP
25
DEV
75
FAIL
FLT
LO V
OP
50
No DC Power Detected
The converter is not detecting any power on the input. Using a
multimeter, check that the power source is working. Check that
the input fuse hasn’t blown. If the fuse is blown, replace it with
the recommended fuse listed on the label. If the LEDs still do not
glow, then there is likely an internal failure and the unit will have
to be returned for service.
Low Input Voltage Indication
The voltage converter has detected that the input voltage has
dropped below the minimum level needed for normal operation.
The unit will shut off and wait for the voltage to recover.
OVERTEMP
IP TEMP FAIL LO V
IP TEMP
25
DEV
75
FAIL
FLT
LO V
OP
50
Over Temperature Indication
The voltage converter has detected that its internal temperature
is above safe operating limits. It will shut off until the
temperature has returned to normal limits. If this happens
frequently, the unitmay need to be remounted for better air
circulation.
FAULT INDICATORS BLINKING
Converter Failure Indication
The microprocessor has detected a condition that prevents the
converter from operating. Try disconnecting the input power
and re-connecting it. If this does not clear the fault, the cause is
likely an internal component failure and the unit will have to be
returned for service.
CONVERTER FAILED
25
DEV
75
FLT OP
50
IP TEMP FAIL LO V
OVERLOAD/SHORT CIRCUIT
IP TEMP
25
DEV
75
FAIL
FLT
LO V
OP
50
Output Overload/ Short Circuit
If the voltage converter is overloaded and the output voltage
has dropped drops below nominal voltage range for the unit, the
output will cycle on/off until the overload condition is removed.
LOW VOLTAGE
25
DEV
75
FLT OP
50
IP TEMP FAIL LO V
10