Carrier WeatherExpert 48N2 Controls, Start-Up, Operation, Service, And Troubleshooting page 119

cycled at very fast rates, the set point could be maintained very
precisely. Since it is not desirable to cycle compressors more
than 6 cycles per hour, slow change override takes care of keep-
ing the PID under control when "relatively" close to set point.
EXV INFORMATION DISPLAY TABLE
The EXV information display table provides information on
the unit cooling EXVs.
VFD INFORMATION DISPLAY TABLE
The VFD information display table provides information on
the supply fan VFD and exhaust fan VFD. See Table 86.
OUTDOOR FAN VFD DISPLAY TABLE
The outdoor fan VFDs display table provides information on
the outdoor fan VFD. Specifically the motor commanded
speed, 0 to 100%.
MODE TRIP HELPER
The Mode Trip Helper table provides information on the unit
modes and when the modes start and stop. See Table 87. This
ITEM
VFDS
VFD INFORMATION
S.VFD
SUPPLY FAN VFD (VFD 1)
SPD VFD1 Actual Speed %
RPM VFD1 Actual Motor RPM
FREQ VFD1 Actual Motor Freq
AMPS VFD1 Actual Motor Amps
TORQ
VFD1 Actual Motor Torque
PWR
VFD1 Actual Motor Power
VDC VFD1 DC Bus Voltage
V.OUT VFD1 Output Voltage
TEMP VFD1 Transistor Temp (C)
RUN.T VFD1 Cumulative Run Time
KWH
VFD1 Cumulative kWh
LFC
VFD1 Last Fault Code
E.VFD EXHAUST FAN VFD (VFD 2)
SPD VFD2 Actual Speed %
RPM VFD2 Actual Motor RPM
FREQ VFD2 Actual Motor Freq
AMPS VFD2 Actual Motor Amps
TORQ
VFD2 Actual Motor Torque
PWR VFD2 Actual Motor Power
VDC VFD2 DC Bus Voltage
V.OUT VFD2 Output Voltage
TEMP VFD2 Transistor Temp (C)
RUN.T VFD2 Cumulative Run Time
KWH
VFD2 Cumulative kWh
LFC VFD2 Last Fault Code
O.VFD OUTDOOR FAN VFDS
SPD.A MtrMaster A Commanded %
SPD.B MtrMaster B Commanded %
Table 86 — VFD Information Display Table
EXPANSION
0-100
0-30000
0-500
0-999
–200-200
–150-150
0-1000
0-1000
0-150
0-65535
0-65535
0-65535
0-100
50-30000
10-500
0-999
–200-200
–150-150
0-1000
0-1000
0-150
0-65535
0-65535
0-65535
0-100
0-100
119
information can be used to help determine why the unit is in
the current mode.
CCN/LINKAGE DISPLAY TABLE
The CCN/Linkage display table provides information on unit
linkage. See Table 88.
COMPRESSOR RUN HOURS DISPLAY TABLE
The Compressor Run Hours Display Table displays the number
of run time hours for each compressor. See Table 89.
COMPRESSOR STARTS DISPLAY TABLE
The Compressor Starts Display Table displays the number of
starts for each compressor. See Table 90.
SOFTWARE VERSION NUMBERS DISPLAY TABLE
The Software Version Numbers Display Table displays the
software version numbers of the unit boards and devices. See
Table 91.
RANGE UNITS
% VFD1_SPD
VFD1RPM
VFD1FREQ
amps VFD1AMPS
% VFD1TORQ
kW VFD1PWR
voltage VFD1VDC
voltage VFD1VOUT
VFD1TEMP
hours VFD1RUNT
VFD1KWH
VFD1LFC
% VFD2_SPD
VFD2RPM
VFD2FREQ
amps VFD2AMPS
% VFD2TORQ
kW VFD2PWR
voltage VFD2VDC
voltage VFD2VOUT
VFD2TEMP
hours VFD2RUNT
VFD2KWH
VFD2LFC
% MM_A_VFD
% MM_B_VFD
CCN POINT WRITE STATUS