Hitachi L300P Uživatelský manuál stáhnout pdf (Strana 205)

L300P Inverter

Troubleshooting

and Maintenance

6–3

Troubleshooting

Tips

The table below lists typical symptoms and the corresponding solution(s).

Symptom/condition Probable Cause Solution

The motor

will not run.

The inverter

outputs U, V, W

are not supplying

voltage.

• Is the frequency command source

A001 parameter setting correct?

• Is the Run command source A002

parameter setting correct?

• Make sure the parameter

setting A001 is correct.

• Make sure the parameter

setting A002 is correct.

• Is power being supplied to terminals

[R], [S], and [T] ([L1], [L2], and

[L3])? If so, the POWER lamp should

be ON.

• Check terminals [R], [S], and

[T] ([L1], [L2], and [L3]), then

[U], [V], and [W] ([T1], [T2],

and [T3]).

• Turn ON the power supply or

check fuses.

• Is there an error code

EXX.X

displayed?

• Press the Func. key and deter-

mine the error type. Eliminate

the error cause, then clear the

error (Reset).

• Are the signals to the intelligent input

terminals correct?

• Is the Run Command active?

• Is the [FW] terminal (or [RV])

connected to P24 (via switch, etc.)

• Verify the terminal functions

for C001 - C005 are correct.

• Turn ON Run command

enable.

• Supply 24V to [FW] or [RV]

terminal, if configured.

• Has the frequency setting for F001

been set greater than zero?

• Are the control circuit terminals [H],

[O], and [L] connected to the potenti-

ometer?

• Set the parameter for F001 to a

safe, non-zero value.

• If the potentiometer is the

frequency setting source, verify

voltage at [O] > 0V.

• Is the RS (reset) function or FRS (free-

run stop) function ON?

• Turn OFF the command(s).

Inverter outputs

U, V, W are

supplying voltage.

• Is the motor load too heavy? • Reduce load or test the motor

independently of the load.

The direction of the motor is

reversed.

• Are the connections of output termi-

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

correct?

• Is the phase sequence of the motor

forward or reverse with respect to

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

• Make connections according to

the phase sequence of the

motor. In general:

FWD = U-V-W, and REV=U-

W-V.

• Are the control terminals [FW] and

[RV] wired correctly?

• Is parameter F004 properly set?

• Use terminal [FW] for forward,

and [RV] for reverse.

• Set motor direction in F004.

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