Carrier 48HC 04-28 Controls, Start-Up, Operation And Troubleshooting page 125

APPENDIX C — VARIABLE FREQUENCY DRIVE (VFD) (cont)
UNIT
UNIT SIZE
VOLTAGE
(Digits 7 & 8)
(Digit 12)
208/230v(5)
24 460v(6)
575v(1)
208/230v(5)
28 460v(6)
575v(1)
For proper operation, there are three jumper wires that must re-
main installed and the VFD must be set to the auto mode. The
3 jumpers are shown on the unit schematic and are connected
through a plug called PL25. These jumpers set the VFD to start
enabled, run enabled, and tie the common bus together. The
VFD has 2 LEDs on its front panel to indicate operating status.
See below and VFD Troubleshooting section for details on
VFD faults and alarms. The VFD faults can be reset with the
VFD keypad or through
(AlarmsR.CUR =Yes).
The Green LED on steady indicates power is on the VFD,
flashing Green indicates an alarm condition detected. Alarms
are advisory in nature. These indicate a problem has been de-
tected by the VFD's diagnostics but this problem will not re-
quire a shutdown.
The Red LED steady or flashing indicates a fault condition is
detected. A fault is a significant internal situation for the VFD
or Motor. Faults will typically shutdown the motor.
VFD Diagnostics
The drive detects error situations and reports them using:
Table U — VFD Motor Default Configurations (cont)
UNIT STATIC
OPTION
VFD1NVLT
(Digit 10)
(N.VLT)
V-Low (1) 230
V-Medium (2) 230
V-High (3) 230
H-Low (5) 230
H-Medium (6) 230
H-High (7) 230
V-Low (1) 460
V-Medium (2) 460
V-High (3) 460
H-Low (5) 460
H-Medium (6) 460
H-High (7) 460
V-Low (1) 575
V-Medium (2) 575
V-High (3) 575
H-Low (5) 575
H-Medium (6) 575
H-High (7) 575
V-Low (1) 230
V-Medium (2) 230
V-High (3) 230
H-Low (5) 230
H-Medium (6) 230
H-High (7) 230
V-Low (1) 460
V-Medium (2) 460
V-High (3) 460
H-Low (5) 460
H-Medium (6) 460
H-High (7) 460
V-Low (1) 575
V-Medium (2) 575
V-High (3) 575
H-Low (5) 575
H-Medium (6) 575.0
H-High (7) 575.0
the ComfortLink controls
COMFORTLINK CCN POINT (DISPLAY MENU ITEM)
VFD1NAMP VFD1NFRQ
(N.AMP) (N.FRQ)
13.6 60Hz
17.1 60Hz
23.5 60Hz
13.6 60Hz
17.1 60Hz
23.5 60Hz
6.4 60Hz
8.6 60Hz
11.9 60Hz
6.4 60Hz
8.6 60Hz
11.9 60Hz
6.0 60Hz
7.6 60Hz
9.0 60Hz
6.0 60Hz
7.6 60Hz
9.0 60Hz
13.6 60Hz
17.1 60Hz
23.5 60Hz
13.6 60Hz
17.1 60Hz
23.5 60Hz
6.4 60Hz
8.6 60Hz
11.9 60Hz
6.4 60Hz
8.6 60Hz
11.9 60Hz
6.0 60Hz
7.6 60Hz
9.0 60Hz
6.0 60Hz
7.6 60Hz
9.0 60Hz
1. Green and red LEDs on the body of the drive (located
under the keypad)
2. Status LED on the control panel
3. Control panel display
4. The Fault Word and Alarm Word parameter bits (parame-
ters 0305 to 0309)
The form of the display depends on the severity of the error.
The user can specify the severity for many errors by directing
the drive to ignore the error situation, report the situation as an
alarm, or report the situation as a fault.
FAULTS (RED LED LIT)
The VFD signals that it has detected a severe error, or fault, by:
1. Enabling the red LED on the drive (LED is either steady
or flashing)
2. Setting an appropriate bit in a Fault Word parameter (0305
to 0307)
3. Overriding the control panel display with the display of a
fault code
4. Stopping the motor (if it was on)
5. Sets an appropriate bit in Fault Word parameter 0305-
0307.
125
VFD1NRPM VFD1NPWR
(N.RPM) (N.PWR)
1740 5.3
1760 5.0
1760 7.5
1740 5.3
1760 5.0
1760 7.5
1740 5.3
1760 5.0
1760 7.5
1740 5.3
1760 5.0
1760 7.5
1725 5.3
1745 5.0
1750 7.5
1725 5.3
1745 5.0
1750 7.5
1740 5.3
1760 5.0
1760 7.5
1740 5.3
1760 5.0
1760 7.5
1740 5.3
1760 5.0
1760 7.5
1740 5.3
1760 5.0
1760 7.5
1725 5.3
1745 5.0
1750 7.5
1725 5.3
1745.0 5.0
1750.0 7.5
VFD1MAXA
(MAX.A)
15.6
19.7
27.0
15.6
19.7
27.0
7.4
9.9
13.7
7.4
9.9
13.7
6.9
8.7
10.4
6.9
8.7
10.4
15.6
19.7
27.0
15.6
19.7
27.0
7.4
9.9
13.7
7.4
9.9
13.7
6.9
8.7
10.4
6.9
8.7
10.4