5. Safety-related function
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i. -|Transparent setting guide|-
5.1 Interlock
Interlock is safety-related function, when OSSD output is switched to OFF state due to power on or, blocked beams or an error
occurs during operation, keeping its OFF state when the beams are clear or the error is fixed.
The interlock is reset by auto-reset or manual reset.
5.1.1 Auto-reset
Auto-reset is a function that the OSSD is switched to ON state when all beams are clear without a reset input or power on
again. The manual reset (start interlock and restart interlock) is deactivated.
Be sure to use the auto-reset in the environment where an operator cannot enter the detection zone or hazardous zone.
※T
ON
, T
OFF
: OSSD response time
OSSD
Self-test
T
OFF
T
OFF
T
ON
T
ON
Light curtain
Clear
Blocked
ON
OFF
Power on
※
Self-test completes within 2 seconds.
※
For more information on response itme of OSSD output, see "2.2 Models"
5.1.2 Manual reset
One of start interlock or restart interlock is activated.
(When using the setting switch, the start interlock and restart interlock are activated or disactivated simultaneously.)
When using the manual reset, the interlock condition is released when reset iput is applied after entering the interlock
condition and all beams are clear. The OSSD output is switched from OFF state to ON state. The Interlock condition cannot be
released when beams are blocked.
When using a combination of muting or override function, the interlock condition is reset when the override function is
activated.
5.1.2.1 Start interlock
When the power is on, OSSD output remains OFF state regardless of the state of light curtain.
The interlock condition is released by applying the reset input. Apply reset input for more than 250ms.
(In this case, the reset-hold function is deactivated.)
OSSD
Light curtain
Reset input
min.
250ms
max. 50ms
※1
Interlock condition
Clear
Blocked
ON
OFF
ON
OFF
Power
on
※
1: It may differ depending on the series connection.
Entry condition of start interlock:
•
When power is on
•
Performs self-test after lockout reset
•
Performs self-test after changing PC settings
