VYPER
™
VARIABLE SPEED DRIVE
MAINTENANCE
S100-200 IOM (MAY 08)
Page 58
Fault 83: Harmonic Filter Serial Communication
(Warning Only)
Message
Quantum: “Fault 83”
Quantum LX: “ Harmonic Filter Serial Communication (Warn-
ing Only)”
When requesting Status data, the response data from the
Harmonic Filter includes a bit that indicates whether commu-
nications were lost from the Vyper
™
to the Harmonic Filter. If
this bit is high for twenty consecutive seconds, this warning is
indicated. This warning is also indicated whenever a receive,
timeout, or checksum fault is detected on the Harmonic Filter
communications, for twenty continuous seconds.
This message can also occur as a background message
when the chiller is running. When this message is displayed,
all fi lter related values are unavailable. If communications is
reestablished, the message will disappear, and 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.
Fault 84: Harmonic Filter Input Frequency Out of
Range (Warning Only)
Message
Quantum: “Fault 84”
Quantum LX: “Harmonic Input Frequency Out of Range
(Warning Only)”
The power line frequency detected by the Vyper harmonic
fi lter is outside the range of 58 to 62 Hz (60 Hz) or 49 to 51
Hz (50 Hz) and the Quantum
™
LX panel displays Fault 84.
This message automatically clears when the line frequency
is within range.
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