6–3

L2002 Inverter

Troubleshooting TipsThe table below lists typical symptoms and the corresponding solution(s).
Symptom/condition

 

Probable CauseSolution

 

 

 

 

 

 

 

 

 

 

 

• Is the frequency command source

• Make sure the parameter

 

 

 

A001 parameter setting correct?

setting A001 is correct.

 

 

• Is the Run command source A002

• Make sure the parameter

 

 

 

parameter setting correct?

setting A002 is correct.

 

 

 

 

 

 

• Is power being supplied to termi-

• Check terminals [L1], [L2],

 

 

 

nals [L1], [L2], and [L3/N]? If so,

and [L3/N], then [U/T1],

 

 

 

the POWER lamp should be ON.

[V/T2], and [W/T3].

 

 

 

 

• Turn ON the power supply

 

 

 

 

or check fuses.

 

 

 

 

 

 

 

•

Is there an error code E X X

• Press the Func. key and

 

The inverter

 

displayed?

determine the error type.

 

 

 

Eliminate the error cause,

 

outputs [U], [V],

 

 

then clear the error (Reset).

 

[W] are not

 

 

 

 

• Are the signals to the intelligent

• Verify the terminal functions

 

supplying

 

 

input terminals correct?

for C001 – C005 are correct.

 

voltage.

 

 

• Is the Run Command active?

• Turn ON Run Command

The motor

 

 

• Is the [FW] terminal (or [RV])

enable.

will not run.

 

 

 

connected to [PCS] (via switch,

• Supply 24V to [FW] or [RV]

 

 

 

 

 

 

etc.)

terminal, if configured.

 

 

 

 

 

 

• Has the frequency setting for F001

• Set the parameter for F001

 

 

 

been set greater than zero?

to a safe, non-zero value.

 

 

• Are the control circuit terminals

• If the potentiometer is the

 

 

 

[H], [O], and [L] connected to the

frequency setting source,

 

 

 

potentiometer?

verify voltage at [O] > 0V.

 

 

 

 

 

 

• Is the RS (reset) function or FRS

• Turn OFF the command(s).

 

 

 

(free-run stop) function ON?

 

 

 

 

 

 

 

Inverter outputs

•

Is the motor load too heavy?

• Reduce load, and test the

 

[U], [V], [W]

 

 

motor independently.

 

are supplying

 

 

 

 

voltage.

 

 

 

 

 

 

 

 

 

The optional

•

Are the operational settings

• Check the operator type

 

remote operator

 

between the remote operator and

setting.

 

is used (SRW).

 

the inverter unit correct?

 

 

 

 

 

 

 

• Are the connections of output

• Make connections according

 

 

 

terminals [U/T1], [V/T2], and

to the phase sequence of the

 

 

 

[W/T3] correct?

motor. In general:

 

 

• Is the phase sequence of the motor

FWD = U-V-W, and

The direction of the motor is

 

forward or reverse with respect to

REV=U-W-V.

 

 

 

[U/T1], [V/T2], and [W/T3]?

 

reversed.

 

 

 

 

 

 

 

• Are the control terminals [FW] and

• Use terminal [FW] for

 

 

 

[RV] wired correctly?

forward, and [RV] for

 

 

• Is parameter F004 properly set?

reverse.

 

 

 

 

• Set motor direction in F004.

 

 

 

 

 

Troubleshooting Maintenance and