Table 6 Powerflex 755 Fault Code Descriptions and Corrective Actions (cont)

VFD

 

 

 

 

FAULT

ICVC

 

 

 

CODE

 

 

 

FAULT

FAULT TYPE

DESCRIPTION

CORRECTIVE ACTION

ON VFD

STATE

 

 

 

HIST

 

 

 

 

 

 

 

SCREEN

 

 

 

 

168

 

HeatSinkUnder-

Heatsink temperature sensor is reporting a value

Check heat sink temperature sensor. Check heat

206

below -18.7 C (-1.66 F) or the sensor feedback

Tmp

sink temperature.

 

 

circuit is open.

 

 

 

 

210

206

HW En Jumper

See VFD Fault Code 15

See VFD Fault Code 15

Out

 

 

 

 

211

206

Safety Brd Fault

See VFD Fault Code 15

See VFD Fault Code 15

213

206

Safety Jumper In

See VFD Fault Code 15

See VFD Fault Code 15

291

206

HSFan Lifwe

See VFD Fault Code 15

See VFD Fault Code 15

292

206

InFan Life

See VFD Fault Code 15

See VFD Fault Code 15

293

206

MtrBrg Life

See VFD Fault Code 15

See VFD Fault Code 15

294

206

MtrBrg Lube

See VFD Fault Code 15

See VFD Fault Code 15

295

206

MachBrg life

See VFD Fault Code 15

See VFD Fault Code 15

296

206

MachBrg Lube

See VFD Fault Code 15

See VFD Fault Code 15

315

206

Excess Psn Error

See VFD Fault Code 15

See VFD Fault Code 15

316

206

Node Fault Error

See VFD Fault Code 15

See VFD Fault Code 15

Checking Power Modules and Motor Input with Input Power Off — Use the following procedure to check the drive’s power module circuitry with power off:

1.Turn off and lock out input power. Wait five minutes.

2.Verify there is no voltage at the drive’s input power termi- nals.

3.Using a voltmeter, check the DC bus potential as de- scribed above to ensure the DC bus capacitors are dis- charged.

4.Disconnect the motor from the drive.

5.Check all AC line and DC bus fuses.

6.Use a multimeter to check the input diodes and output IGBTs if a fuse is open.

7.Check motor impedance.

8.Reconnect the motor to the drive.

9.Reapply input power. See Tables 7 and 8.

WARNING

Confirm that the DC bus has discharged before performing diode checks.

Table 7 Diode Checks

 

METER LEAD

METER READING

(+)

 

(-)

 

 

R

 

DC+

0.5 V

S

 

DC+

0.5 V

T

 

DC+

0.5 V

R

 

DC-

infinite (OL)

S

 

DC-

Infinite (OL)

T

 

DC-

Infinite (OL)

U

 

DC+

0.5 V

V

 

DC+

0.5 V

W

 

DC+

0.5 V

U

 

DC-

infinite (OL)

V

 

DC-

Infinite (OL)

W

 

DC-

Infinite (OL)

DC+

 

R

Infinite (OL)

DC+

 

S

Infinite (OL)

DC+

 

T

Infinite (OL)

DC-

 

R

0.5 V

DC-

 

S

0.5 V

DC-

 

T

0.5 V

DC+

 

U

Infinite (OL)

DC+

 

V

Infinite (OL)

DC+

 

W

Infinite (OL)

DC-

 

U

0.5 V

DC-

 

V

0.5 V

DC-

 

W

0.5 V

NOTE: Digital meters require a special diode check function because the current sourced by the meter during a normal resis- tance (Ohms) test is too low to accurately test a diode. Make sure the meter is set to the diode test function. Voltage readings may not be exact as shown in above tables, but look for consistency during each of the 4 tests. When performing a test that should return infinity (OL) as shown in above tables, you may see a value slowly climbing toward infinity. This is a result of the meter charging a capacitor and is normal.

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Carrier 19XRV specifications Diode Checks, Meter Lead Meter Reading

19XRV specifications

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