Johnson Controls Frick QUANTUM LX Manual page 100

090-022 O (NOV 09)
Page 100
VDS High Phase C Inverter Baseplate Temp – A thermistor
sensor is located inside the IGBT Module on the Vyper
power unit. If this thermistor detects a temperature of
175°F (79°C) or higher of the Phase C Inverter, a shutdown
will occur. The cooling fans and coolant pump on the
Vyper will continue to run after the shutdown, until the
™
thermistor temperature has dropped to below 165°F
(74°C). This shutdown requires a manual reset via the
Reset push button on the Vyper
VSD Initialization Fault - At power-up, all the boards go
through a process called initialization. At this time,
memory locations are cleared, jumper positions are
checked, and serial communications links are established.
VSD Invalid Current Scale Selection – The J1 connector on
the Vyper ™ Logic board contains jumpers along with wires
from the output CTs. Since the part number of the Logic
board is the same on all horsepower sizes, the jumpers
tell the logic board the size of the Vyper
in order to properly scale the output current. If the jumper
configuration is found by the Logic board to be invalid, the
system will be shut down and the above message will be
generated.
VSD Logic Board Power Supply Fault –
power supplies which power the Logic Board are
monitored via hardware located on the Logic Board. If any
of these power supplies fall outside their allowable limits,
the unit will trip and the Quantum™ LX Panel will display
the fault message.
VSD Logic Board Processor Fault – This shutdown is
generated if a communications problem occurs between
the two microprocessors on the Vyper
this shutdown occurs, replace the Vyper
VSD Low Converter Heatsink Temp Fault – The phase
bank assembly heatsink temperature and the inverter
module base plate temperature are compared to a lower
limit of 37°F. If the inverter base plate temperature or the
converter heat sink temperature falls below 37°F, this
message will be displayed.
temperatures fall below the 37°F limit, the unit will trip
and the fan(s) and water pump will be energized.
VSD Low DC Bus Voltage Fault –
voltage trip level must be set at 500 VDC for 60 Hz and
414 VDC for 50 Hz VSD's. If the DC link drops below this
level, the unit will trip, and the Vyper™ Logic Board will
initiate a system shutdown.
VSD Low Inverter Baseplate Temp Fault – The phase bank
assembly heatsink temperature and the inverter module
base plate temperature are compared to a lower limit of
37°F. If the inverter module base plate temperature falls
below this limit the unit will trip and the Quantum
Panel will display this message.
VSD Low Phase A Inverter Baseplate Temp. – The phase
A heatsink temperature and the inverter module base
plate temperature are compared to a lower limit of 37°F. If
FRICK ® QUANTUM™ LX COMPRESSOR CONTROL PANEL
OPERATION - SERVICE
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In addition, if both
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the inverter module base plate temperature falls below
this limit the unit will trip and the Quantum
display this message. In addition, if both the inverter and
converter temperatures fall below the 37°F limit, the unit
will trip and the fan(s) and water pump will be energized.
VSD Low Phase B Inverter Baseplate Temp. – The phase B
heatsink temperature and the inverter module base plate
temperature are compared to a lower limit of 37°F. If the
inverter module base plate temperature falls below this
limit the unit will trip and the Quantum
display this message. In addition, if both the inverter and
converter temperatures fall below the 37°F limit, the unit
will trip and the fan(s) and water pump will be energized.
VSD Low Phase C Inverter Baseplate Temp. – The phase C
heatsink temperature and the inverter module base plate
temperature are compared to a lower limit of 37°F. If the
inverter module base plate temperature falls below this
limit the unit will trip and the Quantum
display this message. In addition, if both the inverter and
converter temperatures fall below the 37°F limit, the unit
will trip and the fan(s) and water pump will be energized.
VSD Phase A Gate Driver Fault –
assembly shall contain one IGBT gate driver control board.
This board monitors the saturation voltage drop across
the Phase A Gate Driver while gated on. If the IGBT's
Phase A Gate Driver saturation voltage exceeds the
prescribed limit, the gate
determination that a short circuit is present. This in turn
shall cause the unit to trip and the Quantum™ LX Panel
shall display this message. If the driver board's power
supply voltage falls below the permissible limit, this same
message shall be generated.
VSD Phase B Gate Driver Fault –
assembly shall contain one IGBT gate driver control board.
This board monitors the saturation voltage drop across
the Phase B Gate Driver while gated on. If the IGBT's
Phase B Gate Driver saturation voltage exceeds the
prescribed limit, the gate
determination that a short circuit is present. This in turn
shall cause the unit to trip and the Quantum™ LX Panel
shall display this message. If the driver board's power
supply voltage falls below the permissible limit, this same
message shall be generated.
VSD Phase C Gate Driver Fault –
assembly shall contain one IGBT gate driver control board.
This board monitors the saturation voltage drop across
the Phase C Gate Driver while gated on. If the IGBT's
Phase C Gate Driver saturation voltage exceeds the
prescribed limit, the gate
determination that a short circuit is present. This in turn
shall cause the unit to trip and the Quantum™ LX Panel
shall display this message. If the driver board's power
supply voltage falls below the permissible limit, this same
message shall be generated.
VSD Precharge Lockout Fault – If the Vyper
the precharge criteria, then the precharge circuit will wait
™ LX Panel will
™ LX Panel will
™ LX Panel will
The unit's phase bank
driver will make the
The unit's phase bank
driver will make the
The unit's phase bank
driver will make the
™ fails to meet