Keyence Visual KV Series Bedienungsanleitung PDF herunterladen (Seite 29)

Chapter 1 Configuration and Specifications

1-5

Visual KV

Series

1.2.2 AC Power Specifications

1. Includes the internal current consumption and current consumption of expansion units.

Note: The maximum output capacity available with the AC type service power

output is the output capacity of each basic unit subtracted by the internal current

consumption of the basic unit, connected expansion units, and connected peripheral

units.

Visual KV Series operation at power interruption

■ Drop in supply voltage

When the supply voltage drops, the Visual KV Series stops operating and the

output turns off.

■ Detection of instantaneous power interruption

• An AC type basic unit continues operating against instantaneous power interrup-

tion of less than 40 ms. A DC type basic unit continues operating against

instantaneous power interruption of less than 2 ms.

• An AC type basic unit may or may not accept instantaneous power interruption of

40 ms or more. A DC type basic unit may or may not accept instantaneous power

interruption of 2 ms or more.

• When accepting instantaneous power interruption, a basic unit stops operating

and the output turns off.

■ Automatic recovery

• Once the supply voltage recovers, the Visual KV Series restarts operation auto-

matically.

Note: If the supply voltage increases gradually or drops, the Visual KV Series may

repeat operation and then stop. If problems continue to occur with equipment and

other operations from repetitive starts and stops, provide a protection circuit so that

the output shuts down until the voltage reaches the rated value.

■ Time until start of operation

• The time period from when the power is turned on until operation starts varies

depending on the conditions, including the supply voltage, system configuration,

and operating environment. The minimum time is approximately 1.2 ms.

• When a user program is changed, it will be saved in the EEPROM when the

power is next turned on. Therefore, in such a case, the time period from when the

power is turned on until operation starts is longer than usual.

1.2 Specifications

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Rated voltage

Instantaneous power interruption:

Less than 40 ms

Rated voltage

▲

Rated voltage

Instantaneous power interruption:

40 ms or more

Rated voltage

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