Frick Vyper 254, Установка, эксплуатация и обслуживание, Страница: 53 / 68

VYPER ™ VARIABLE SPEED DRIVE
MAINTENANCE
100-200 IOM (FEB 09)
Page 53
Power-up must be done by closing the main disconnect
on the Vyper
™
cabinet with all fuses in place. Be sure you
do not have an open fuse, causing loss of power to the
Vyper
™
Logic board which can cause this fault.
• The EPROMs must be correct for each board, and they
must be correctly installed. There are a total of seven (7)
EPROMs in each Vyper
™
system. These EPROMs are
created as a set, and cannot be intermixed. All pins must
be properly inserted into the EPROM sockets.
• Serial data must be established. (See: Serial Communication
Fault” error code). If communications between the Vyper
™
Logic, Filter Logic, and Interface Boards and Quantum panel
does not take place during initialization, Fault 5 message
will appear before any other message can be generated.
Check to see that the serial communications have been
established by selecting the Motor information screen veri-
fying the drive horsepower. A zero displayed value for this
parameter (and all other Vyper
™
parameters) indicates a
serial communications link or EPROM problem.
• If the Harmonic Filter option is included, make sure the
Harmonic Filter Logic board is not in continuous reset.
This will be evidenced by the LEDs on the filter logic
board alternately blinking. To rule out the Harmonic Filter
as the cause of initialization failure, disconnect the filter
by switching the filter logic board’s SW1 switch to the OFF
position, and removing the 16 wire ribbon cable between
the Harmonic Filter logic and Vyper
™
Logic Board.
Fault 8: Vyper - Stop Contacts
Message
Quantum: “Fault 8 “
Quantum LX: “VSD Stop Contacts Fault “
This fault occurs if the No Fault signal from the Vyper
™
is low.
It indicates a fault is present at the Vyper
™
or the Harmonic
Filter, but the communications data contains no Vyper
™
fault
data for twenty seconds. The Frick Interface Board will send
Initialize data requests while this fault is active.
Whenever the Vyper
™
initiates a fault, it first opens the K1
relay on the Vyper
™
Logic board. When the relay opens,
the voltage between wire #53 and #16 will be 115 VAC. If
wire #53 to #16 circuit ever opens without receiving an ac-
companying cause for the trip over the serial link (within 11
communication tries, approximately 22 seconds), this Fault
Code will be displayed. A loose wire is often the cause of
this problem. Check the #1 to #53 horseshoe jumper in the
Control Center and all other wiring involving #53 and #16.
This fault may be replaced with a Serial Communications
fault if the serial link has failed.
Fault 9: Harmonic Filter - logic Board Or Communications
Message
Quantum: “Fault 9 “
Quantum LX: “Harmonic Filter Logic Board or Comms Fault “
This fault occurs if the No Fault signal from the Vyper
™
is low,
indicating a fault is present at the Vyper
™
or the Harmonic
Filter, but the communications data contains no Harmonic
Filter fault data for twenty seconds. The Frick Interface Board
will send Initialize data requests while this fault is active.
This Fault Code can also occur as a background message
when the chiller is running. When this message is displayed,
all filter related values are unavailable. If communications is
reestablished, normal values will again be displayed. If this
problem is encountered, the ribbon cable connecting the
Vyper
™
logic board to the filter logic board should be checked.
The integrity of the shielded communications cable between
the filter logic board and the Interface board should also be
checked. Finally, replacement of the filter logic board, the
Interface board and the Vyper
™
logic board should be tried,
one board per try.
Fault 10: Harmonic Filter - High Total Demand Distortion
Message
Quantum: “Fault 10”
Quantum LX: “Harmonic Filter High Total Demand Distortion’’
This shutdown indicates that the filter is not operating cor-
rectly or the input current to the Vyper ™ /filter system is not
sinusoidal. This fault occurs when any of the three phases of
Total Demand Distortion is greater than 25.0 %, for forty-five
continuous seconds while the Vyper ™ is running. TDD is an
acronym for Total Demand Distortion, a term defined by the
IEEE Std 519-1992 standard as “the total root - sum - square
harmonic current distortion, in percent of the maximum de-
mand load current (15 or 30 min demand)”. In the filter option
supplied by Frick, the displayed TDD is the total RMS value
of the harmonic current supplied by the power mains to the
Vyper ™ system divided by the FLA of the Vyper ™ , in percent.
The harmonic filter option was designed to provide an input
current TDD level of 8% or less for the Vyper ™ system. A
standard Vyper ™ less the optional filter typically has an input
current TDD level on the order of 28 - 30%. Causes for this
shutdown are numerous but it would most likely be caused
by a faulty filter logic board. In order to initiate a chiller run
again, the Quantum ™ LX panel’s compressor switch must
first be placed into the STOP/RESET position.
Fault 11: High Phase B Inverter Baseplate Temperature
Message
Quantum: “Fault 17”
Quantum LX: “High Phase B Inverter Baseplate Temperature”
The phase bank assembly shall contain one heat sink to cool
the three inverter power modules and the converter SCR/
Diode modules. The inverter power modules each contain an
internal temperature sensor (5K ohm at 25°C) to monitor their
baseplate temperatures. The inverter power module base-
plate temperatures shall each be compared in software to a
limit of 175°F (79°C) and if this limit is exceeded the unit shall
initiate a safety shutdown. The fan(s) and water pump shall
remain energized until the inverter power module baseplate
temperature falls below 165°F. The fans and pumps shall be
de-energized when all baseplate temperatures drop below
their reset thresholds.
Fault 12: High Phase C Inverter Baseplate Temperature
Message
Quantum: “Fault 12”
Quantum LX: “High Phase C Inverter Baseplate Temperature”
Same comments as Fault 11 except applying to Phase C
Inverter Baseplate Temperature
Fault 13: low Phase B Inverter Baseplate Temperature
Message
Quantum: “Fault 13”
Quantum LX: “Low Phase B Inverter Baseplate Temperature”
The phase bank assembly shall contain one heat sink to cool
both the inverter power module and the converter SCR/Diode
modules. The three inverter power modules each contain