Yaskawa VS-616G5 Series Revision F Programming Manual Manual de usuario descargar pdf (Pagina 112)

112 VS-616G5 Programming Manual

Section L: Protection Parameters

L5 Automatic Restart

Selects operation when the frequency reference from the control circuit terminal is reduced by 90%

within 400ms.

L5 Automatic Restart

After a fault occurs, the inverter and its fault detection circuit can be reset. The automatic restart func-

tion allows the inverter to continue operation after certain faults.

Setting Range: 0 to 10

Factory Default: 0

Sets the number of automatic restart attempts. Setting to “0” disables this function.

Automatic Restart Operation

· When a fault is detected, the inverter output shuts OFF for the minimum baseblock time (L2-03).

The digital operator displays the fault while the inverter output is shut OFF.

· While the minimum baseblock time elapses, the fault is reset automatically and speed search starts

from the previous output frequency before the fault occurred.

· When the total number of faults exceeds the number of automatic restart attempts, the faults are not

reset automatically and the inverter output remains OFF. At this time, a fault contact output is acti-

vated.

The inverter can be set to automatically restart after the following faults occur:

· Overcurrent (OC)

· Overvoltage (OV)

· Undervoltage PUV (UV1)

· Ground fault (GF)

· Regenerative transistor fault (rr)

However, automatic restart is not available for the following faults:

· Control circuit undervoltage (UV2) · Excessive speed deviation (DEV)

· MC answer-back fault (UV3) · PG disconnection (PGO)

· Load short-circuit (SC) · Parameter setting error (OPR)

· Heatsink overheat (OH) · Communication error (CE)

· Run command fault (EF) · External fault (EF3 to EF8)

· Overspeed (OS)

The number of restart attempts is reset to 0 when:

· A fault does not occur for more than 10 minutes after restart.

· A fault reset command is input from the control circuit terminal or the digital operator.

· Power is cycled.

L4-05 Operation When Frequency Reference Loss Ref Loss Sel

A A A A

Setting Description

0 Stop (factory default).

1 Run at 80% of the previous frequency reference.

L5-01 Number of Automatic Restart Attempts Num of Restarts

B B B B

1 2 ... 107 108 109 110 111 112 113 114 115 116 117 ... 161 162

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