Keyence SL-V Series User Manual download pdf (Page 31)

2-7

Functions and Features

SL-V-M-NO2-E

2-4 Interlock Function

Interlock is a function to prevent that the OSSD automatically goes to the ON-state from the OFF-state.

You can prevent the unintended start-up and/or the unintended restart of the machine if the interlock is

applied to the SL-V.

You can determine whether the interlock function is enabled at start-up, at restart or both through the

SL-V Configurator (SL-VH1S).

In this sentence, start-up and restart means as follows.

Start-up:

1) When the power is supplied

2) When the SL-V is restored from lockout condition thorough reset input

Restart:

1) When the OSSD goes back to the ON-state from OFF-state, except for the start-up

On the other hand, you can also determine whether the interlock function is enabled at start-up and at

restart through the wiring method.

The setting of combination for start and restart interlock is as follows.

(X: available -: not available)

 Start mode

Automatic start mode: Interlock function does not work. The SL-V starts operation automatically without

the reset operation.

The OSSD goes to the ON-state automatically if the SL-V detects no interruption in the detection zone at

start-up.

This mode can be used for the machine that nobody can go into or approach the hazardous area with

only passing through the protection zone, or can be used if the safety-related part of a control system

other than the SL-V, such as safety relay unit, can ensure the safety with other means.

Manual start mode: Interlock function works. The SL-V starts operation if the SL-V receives the reset

operation.

The OSSD keeps the OFF-state at start-up (Interlock condition). It is necessary to perform the reset oper-

ation when the SL-V detects no interruption in the detection zone, in order that the machine starts opera-

tion. Because of reset operation, the OSSD goes to the ON-state, and then interlock condition is

terminated.

Unexpected/Unintended start-up of the machine or machinery can be prevented.

 Restart mode

Automatic reset mode: Interlock function does not work. The SL-V starts operation automatically without

the reset operation.

The OSSD goes to the ON-state automatically at restart if the object detected by the SL-V is removed

from the detection zone.

Interlock Setting method

Start

Interlock

Restart

Interlock

SL-V wiring SL-VH1S

Automatic Automatic X X

Manual Automatic - X

Automatic Manual - X

Manual Manual X X

Cable

Self-diagnosis

Series Connection

Interlock

AUX

EDM

Wait

State Information

Alert

Clear/Blocked

Suspension

Fixed

Reduced

Monitoring

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Keyence SL-V Series User Manual Page 31

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