VYPER
™
VARIABLE SPEED DRIVE
MAINTENANCE
100-210 IOM (JUL 09)
Page 66
module for shorted transistors. This is done by measuring
resistance from wires 519, 518, and 517 to the filter’s posi-
tive bus, checking in both polarities - and from 519, 518, and
517 to the filter’s negative bus in both polarities. None of the
readings should be less than 5 ohms.
Fault 52: Harmonic Filter High Phase B Current
Message
Quantum: “Fault 52”
Quantum LX: “Harmonic Filter High Phase B Current Fault”
Same as Fault 51 except for applying to Phase B.
Fault 53: Harmonic Filter High Phase A Current
Message
Quantum: “Fault 53”
Quantum LX: “Harmonic Filter High Phase A Current Fault”
Same as Fault 51 except for applying to Phase A.
Fault 54: Harmonic Filter Phase Locked Loop
Message
Quantum: “Fault 54”
Quantum LX: “Harmonic Filter Phase Locked Loop Fault”
This shutdown indicates that a circuit called a “phase locked
loop” on the Filter Logic board has lost synchronization with
the incoming power line for a period of time. This is normally
an indication that one of the Filter’s incoming power fuses is
blown. Check filter power fuses 14FU, 15FU and 16FU if this
shutdown occurs. If the fuses are OK, then check the output
of the line voltage isolation board at connector J5, pins 1,
2, and 3 on the Filter logic board. With 480 VAC present on
the input to the line voltage isolation board, approximately
5.2 VAC should be present from pins 1 to 2, pins 2 to 3, and
pins 3 to 1.
Fault 56: Harmonic Filter Logic Board Power Supply
Message
Quantum: “Fault 56”
Quantum LX: “Harmonic Filter Logic Board Power Supply”
This shutdown indicates that one of the low voltage power
supplies on the Filter Logic board have dropped below
permissible operating voltage range. The filter logic board
receives power from the Vyper
™
Logic board via the ribbon
cable which connects the two. The power supplies for the logic
boards are in turn derived from the secondary of the 120 to
24 VAC transformer which in turn is derived from the 480 to
120 VAC control transformer. If this shutdown occurs, check
the CR10 LED, labeled “Power Supply OK”. If CR10 is not
illuminated, check the ribbon cable connecting the filter logic
board to the Vyper
™
Logic board. If the CR10 LED is illumi-
nated, the logic board is faulty and requires replacement.
Fault 65: Harmonic Filter Precharge High DC Bus Voltage
Message
Quantum: “Fault 56”
Quantum LX: “Harmonic Filter Logic Board Power Supply”
The DC link voltage will reach at least 525 VDC within 5
seconds after the precharge relay is pulled in on the 60 Hz
519 filter and at least 425 VDC within 5 seconds on the 50 Hz
519 filter. If these voltages are not reached, the Quantum
™
LX
panel displays Fault 65.
Fault 66: Harmonic Filter Precharge Low DC Bus Voltage
Message
Quantum: “Fault 66”
Quantum LX: “Harmonic Filter Precharge Low DC Bus
Voltage”
The DC link voltage will reach at least 50 VDC within 100
msec after the precharge relay has been pulled in on the
60 Hz 519 filter and at least 41 VDC within 100 msec on
the 50 Hz 519 filter. If these voltages are not reached, the
Quantum
™
LX panel displays Fault 66.
This shutdown requires that two minimum voltage thresholds
must be exceeded in order to complete precharge. During
precharge the filter’s DC bus voltage must be equal to or
greater than 50 VDC (41 VDC for 50 HZ) 1/10 second after
the filter precharge relay is energized. Also, the filter’s DC
bus voltage must be equal to or greater than 525 VDC (425
VDC for 50 HZ) within 5 seconds after the filter precharge
relay is energized. The unit is shut down and this message is
generated if this condition is not met. If this shutdown occurs,
check the filter precharge relay, filter precharge resistors,
and the wiring between the filter logic board and the filter
precharge relay.
Fault 67: Harmonic Filter DC Current Transformer 1
Message
Quantum: “Fault 67”
Quantum LX: “Harmonic Filter DC Current Transformer 1”
During initialization, the output voltage of the two DCCT’s that
sense the filter’s input current will be monitored and compared
against a level of ± 147 mv (± 6010 A to D counts). If the
offset error falls outside this range, the unit will trip and the
Quantum
™
LX panel displays Fault 67. If a DCCT error fault is
not encountered, an average of eight readings on each DCCT
output will be taken and used for DCCT offset compensation.
The three phases of VSD input current are sensed by two cur-
rent transformers. The three phases of filter input current are
sensed by two D.C. current transformers. The third filter input
current is derived from the equation I
f2
= -I
f1
–I
f3
.
Fault 68: Harmonic Filter DC Current Transformer 2
Message
Quantum: “Fault 68”
Quantum LX: “Harmonic Filter DC Current Transformer 2”
Same as Fault 67 except applying to Harmonic Filter DC
Current transformer 2.
Fault 69: Harmonic Filter High Baseplate Temperature
Message
Quantum: “Fault 69”
Quantum LX: “Harmonic Filter High Baseplate Temp Fault”
The Filter’s power module baseplate temperature (see Ap-
pendix I for thermistor temperature vs. A to D count) will feed
plug J6 on the Harmonic Filter Logic board. This temperature
is compared in software to a limit of 175°F (79°C) and if the
limit is exceeded, the unit trips and the Quantum
™
LX
panel
displays Fault 69.
A thermistor sensor is located inside the IGBT Module on
the filter power module. If at anytime this thermistor detects
a temperature of 175°F (79°C) or higher, a shutdown will
occur. A manual reset is required by pressing the “Overtemp
Reset” push button located on the Filter Logic board. The
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