Johnson Controls Frick Vyper 305/254 Horsepower, Руководство пользователя, Страница: 62 / 72

VYPER ™ VARIABLE SPEED DRIVE
MAINTENANCE
100.200-IOM (SEP 13)
Page 62
in the Quantum ™ LX panel, and all other wiring involved in
energizing #24 in the Vyper ™ cabinet. Also check to ensure
that the serial communications wiring between the micro
board and the Interface board, and Vyper ™ Logic board and
the Interface board are connected properly.
Fault 39: Vyper High Converter Heat Sink Temperature
Message
Quantum: “Fault 39”
Quantum LX: “VSD High Converter Heat Sink Temp Fault”
A thermistor sensor is located behind the last SCR/Diode
block on the copper chill plate of the Vyper
™
Power Unit. If
at anytime this thermistor detects a temperature of 170°F
(76°C) or higher, 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 160°F (71°C). This shutdown requires a manual reset
via the Reset push button on the Vyper
™
Logic board.
Fault 40: Vyper Invalid Current Scale Selection
Message
Quantum: “Fault 40”
Quantum LX: “VSD Invalid Current Scale Selection Fault”
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 ™ being
employed 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,
Fault 40, will be generated. The proper jumper configuration
is shown on the wiring label for the Vyper ™ .
Fault 41: Vyper Low Inverter Base plate Temperature
Message
Quantum: “Fault 41”
Quantum
™
LX: “VSD Low Inverter Base plate Temp Fault”
The phase bank assembly heatsink temperature and the in-
verter 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
™
LX Panel will
display the message Fault 41. 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. This
feature provides the Service Dept. with a means to run the
water pump while filling the cooling system (by pulling Vyper
™
logic board plug P2). In most case the problem will be broken
wiring or an open thermistor. Check the circuit for continuity
at Vyper
™
Logic board plug J2. Also make certain that one side
of the circuit is not shorted to the enclosure.
Fault 42: Vyperdrive - Serial Communication
Message
Quantum: “Fault 42”
Quantum LX: “VSD Serial Communications Fault”
When requesting Status data, the response data from the
Vyper
™
includes a bit that indicates whether communications
were lost from the Frick Interface Board to the Vyper
™
. If this bit
is high for 22 consecutive seconds, this fault occurs. This fault
also occurs whenever a receive, timeout, or checksum fault
is detected on the Vyper
™
communications, for twenty con-
tinuous seconds. While this fault is active, the Frick Interface
Board will send Initialize data requests in order to reestablish
the communications link. All serial input data is also cleared.
This message is generated when communications between
the Quantum ™ LX Panel and the Frick Interface board, or the
Frick Interface board and Vyper ™ Logic board is disrupted
for a least 22 seconds. Check the shielded cable between
J11 on the Vyper ™ Logic board and J8 on the Frick Interface
board. Check for continuity and also check to see that none
of the conductors are shorted together or shorted to ground.
The terminal block in the lower left corner of the Vyper ™
cabinet serves as a junction point for this cable, and it is
possible for strands of wire to bridge across the terminals
at this location. If all wiring is intact, this problem may also
be caused by electrical noise. Ensure that the chiller and the
Quantum ™ LX Panel are properly ground through the Vyper ™ .
Make certain the shield for this cable is tied to chassis ground
at the Quantum ™ LX panel end only via a green chassis
ground screw. The shield should not go to ground through
the Frick Interface board. If all of this has been done and
communications cannot be established, even at power-up,
you may have a bad communications driver on either the
Vyper ™ Logic or the Frick Interface boards. Change out both
the Frick Interface and Vyper ™ Logic boards. If the Serial
Receive fault problem only occurs intermittently during times
when the unit is running, the culprit could be electrical noise.
If the Harmonic Filter is installed then the fault can be gener-
ated when the communications between the Vyper
™
Logic
board and the Harmonic Filter Logic board, or the Harmonic
Filter Logic board and the Frick Interface board is disrupted.
Also check J8 on the filter logic board and J9 on the Frick
Interface board. Repeat the above procedure for the Vyper
™
serial cable on the Harmonic Filter serial cable.
Fault 43: Vyper
™
Precharge Lockout
Message
Quantum: “Fault 43”
Quantum LX: “VSD Precharge Lockout”
If the Vyper ™ fails to meet the precharge criteria (refer to
precharge faults below), then the precharge circuit will
wait for a period of 10 seconds. During this time, the unit’s
cooling fans and coolant pump remain energized in order to
cool the input SCR’s. Following this 10-second cool-down
period, precharge will again be initiated. The unit will attempt
to meet the precharge criteria three consecutive times. If
the Vyper ™ fails to meet the precharge criteria on three
consecutive tries, the Vyper ™ will shut down, lock out, and
display this message. In order to initiate precharge again,
the Quantum ™ LX panel’s compressor switch must first be
placed into the STOP/RESET position.
Fault 44: Vyper
™
Low Converter Heat Sink Temperature
Message
Quantum: “Fault 44”
Quantum LX: “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,
the message displayed will be Fault 44. In addition, if both
temperatures fall below the 37°F limit, the unit will trip and
the fan(s) and water pump will be energized. This feature
provides the Service Dept. with a means to run the water
pump while filling the cooling system (by pulling VSD logic
board plug P2).
A thermistor sensor is located behind the last SCR/Diode
block on the copper chill plate of the Vyper
™
Power Unit. If at
anytime this thermistor detects a temperature of 37°F (3°C)