222
APPENDIX D — VFD INFORMATION
ALARMS (GREEN LED FLASHING)
For less severe errors, called alarms, the diagnostic display is ad-
visory. For these situations, the drive is simply reporting that it
had detected something unusual. In these situations, the drive:
• flashes the green LED on the drive (does not apply to
alarms that arise from control panel operation errors)
• sets an appropriate bit in an Alarm Word parameter (0308
or 0309)
• overrides the control panel display with the display of an
alarm code and/or name
Alarm messages disappear from the control panel display after
a few seconds. The message returns periodically as long as the
alarm condition exists.
CORRECTING FAULTS
The recommended corrective action for faults is shown in the
Fault Codes Table AG. The VFD can also be reset to remove
the fault. If an external source for a start command is selected
and is active, the VFD may start immediately after fault reset.
To reset a fault indicated by a flashing red LED, turn off the
power for 5 minutes. To reset a fault indicated by a red LED
(not flashing), press RESET from the control panel or turn off
the power for 5 minutes. Depending on the value of parameter
1604 (FAULT RESET SELECT), digital input or serial com-
munication could also be used to reset the drive. When the
fault has been corrected, the motor can be started.
HISTORY
For reference, the last three fault codes are stored into parame-
ters 0401, 0412, 0413. For the most recent fault (identified by
parameter 0401), the drive stores additional data (in parameters
0402 through 0411) to aid in troubleshooting a problem. For
example, a parameter 0404 stores the motor speed at the time
of the fault. To clear the fault history (all of Group 04, Fault
History parameters), perform the following procedure:
1. In the control panel, Parameters mode, select parameter 0401.
2. Press EDIT.
3. Press the UP and DOWN buttons simultaneously.
4. Press SAVE.
CORRECTING ALARMS
To correct alarms, first determine if the Alarm requires any
corrective action (action is not always required). Use Table AH
to find and address the root cause of the problem.
If diagnostics troubleshooting has determined that the drive is
defective during the warranty period, contact ABB Automation
Inc., at 1-800-435-7365, option 4, option 3. A qualified techni-
cian will review the problem with the caller and make a deter-
mination regarding how to proceed. This may involve dis-
patching a designated service station (DSS) representative
from an authorized station, dispatching a replacement unit, or
advising return for repair.
VFD Maintenance
If installed in an appropriate environment, the VFD requires
very little maintenance.
Table AI lists the routine maintenance intervals recommended
by Carrier.
HEAT SINK
The heat sink fins accumulate dust from the cooling air. Since a
dusty sink is less efficient at cooling the drive, overtemperature
faults become more likely. In a normal environment check the
heat sink annually, in a dusty environment check more often.
Check the heat sink as follows (when necessary):
1. Remove power from drive.
2. Remove the cooling fan.
3. Blow clean compressed air (not humid) from bottom to top
and simultaneously use a vacuum cleaner at the air outlet
to trap the dust. If there a risk of the dust entering adjoin-
ing equipment, perform the cleaning in another room.
4. Replace the cooling fan.
5. Restore power.
MAIN FAN REPLACEMENT
The main cooling fan of the VFD has a life span of about
60,000 operating hours at maximum rated operating tempera-
ture and drive load. The expected life span doubles for each
18°F drop in the fan temperature (fan temperature is a function
of ambient temperatures and drive loads).
Fan failure can be predicted by the increasing noise from fan bear-
ings and the gradual rise in the heat sink temperature in spite of
heat sink cleaning. If the drive is operated in a critical part of a
process, fan replacement is recommended once these symptoms
start appearing. Replacement fans are available from Carrier.
To replace the main fan for frame sizes R1 through R4, per-
form the following (see Fig. D):
1. Remove power from drive.
2. Remove drive cover.
3. For frame sizes R1 and R2, press together the retaining
clips on the fan cover and lift. For frame sizes R3 and R4,
press in on the lever located on the left side of the fan
mount, and rotate the fan up and out.
4. Disconnect the fan cable.
5. Install the new fan by reversing Steps 2 to 4.
6. Restore power.
To replace the main fan for frame sizes R5 and R6, perform the
following (see Fig. E):
1. Remove power from drive.
2. Remove the screws attaching the fan.
3. Disconnect the fan cable.
4. Install the fan in reverse order.
5. Restore power.
INTERNAL ENCLOSURE FAN REPLACEMENT
The VFD IP 54 / UL Type 12 enclosures have an additional in-
ternal fan to circulate air inside the enclosure.
To replace the internal enclosure fan for frame sizes R1 to R4,
perform the following (see Fig. F):
1. Remove power from drive.
2. Remove the front cover.
3. The housing that holds the fan in place has barbed retain-
ing clips at each corner. Press all four clips toward the cen-
ter to release the barbs.
4. When the clips/barbs are free, pull the housing up to
remove from the drive.
5. Disconnect the fan cable.
6. Install the fan in reverse order, noting the following: the
fan airflow is up (refer to arrow on fan); the fan wire har-
ness is toward the front; the notched housing barb is
located in the right-rear corner; and the fan cable connects
just forward of the fan at the top of the drive.
Summary of Contents for Weathermaster 48P2030-100
Page 130: ...130 Fig 19 Typical Power Schematic Sizes 040 075 Shown ...
Page 131: ...131 Fig 20 Main Base Board Input Output Connections ...
Page 132: ...132 Fig 21 RXB EXB CEM SCB Input Output Connections ...
Page 133: ...133 Fig 22 Typical Gas Heat Unit Control Wiring 48P030 100 Units Shown ...
Page 134: ...134 Fig 23 Typical Electric Heat Wiring 50P030 100 Units Shown ...
Page 135: ...135 Fig 24 Typical Power Wiring 115 V ...
Page 136: ...136 Fig 25 Typical Gas Heat Section Size 030 050 Units Shown ...
Page 138: ...138 Fig 27 Component Arrangement Size 030 035 Units ...
Page 139: ...139 Fig 28 Component Arrangement Size 040 075 Units ...
Page 140: ...140 Fig 29 Component Arrangement Size 090 100 Units ...