Carrier 48LC Series Controls, Start-Up, Operation And Troubleshooting page 63

EQUIPMENT MODEL NUMBER (EQ_MOD)
Position 1,2 Position 7,8
48 04
48 04
48 04
48 04
48 04
48 04
48 05
48 05
48 05
48 05
48 05
48 05
48 06
48 06
48 06
48 06
48 06
48 06
50 04
50 04
50 04
50 04
50 04
50 04
50 05
50 05
50 05
50 05
50 05
50 05
50 06
50 06
50 06
50 06
50 06
50 06
For proper operation, there are three jumper wires that must
remain 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
(ALERTS/FAULTS  RESET FAULT/ALERT = 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 detected by the VFD's
diagnostics but this problem will not require 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.
LC 04- - 06 VFD Troubleshooting
When communication is successful, the SystemVut control will
provide alerts and faults that correlate to the VFD's warnings and
alarms. Table 33 shows the list of the SystemVu controller faults
Table 32 – LC 04- -06 VFD Motor Default Configurations
Position 10 Position 12
2 5
2 6
2 1
3 5
3 6
3 1
2 5
2 6
2 1
3 5
3 6
3 1
2 5
2 6
2 1
3 5
3 6
3 1
2 5
2 6
2 1
3 5
3 6
3 1
2 5
2 6
2 1
3 5
3 6
3 1
2 5
2 6
2 1
3 5
3 6
3 1
the SystemVut controller
Nominal
Motor Voltage
Horse Power
MOTPWRHP MOTVOLT
1.7 230
1.7 460
1.7 575
2.4 230
2.4 460
2.4 575
1.7 230
1.7 460
1.7 575
2.9 230
2.9 460
3.7 575
2.4 230
2.4 460
2.4 575
2.9 230
2.9 460
3.7 575
1.7 230
1.7 460
1.7 575
2.4 230
2.4 460
2.4 575
1.7 230
1.7 460
1.7 575
2.9 230
2.9 460
3.7 575
2.4 230
2.4 460
2.4 575
2.9 230
2.9 460
3.7 575
and alerts and how they map to the VFD warnings and alarms.
Table 33 also lists the possible causes of these cases.
VFD Diagnostics (with Keypad)
The drive detects error situations and reports them using:
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 (parameters
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)
63
Motor Current
Motor Nominal
(Must--- Hold
Speed
Amps)
MOTCUR MOTNOMSP
5.8 1725
2.9 1725
3.1 1725
7.9 1725
2.9 1725
3.4 1725
5.8 1725
2.9 1725
3.1 1725
9.2 1725
4.6 1725
4.2 1725
7.9 1725
4 1725
3.4 1725
9.2 1725
4.6 1725
4.2 1725
5.8 1725
2.9 1725
3.1 1725
7.9 1725
2.9 1725
3.4 1725
5.8 1725
2.9 1725
3.1 1725
9.2 1725
4.6 1725
4.2 1725
7.9 1725
4 1725
3.4 1725
9.2 1725
4.6 1725
4.2 1725
VFD Max Amps
VFD1MAXA
6.7
3.3
3.6
9.1
4.6
3.9
6.7
3.3
3.6
10.6
5.3
4.8
9.1
4.6
3.9
10.6
5.3
4.8
6.7
3.3
3.6
9.1
4.6
3.9
6.7
3.3
3.6
10.6
5.3
4.8
9.1
4.6
3.9
10.6
5.3
4.8