Datasensing SH4 BASE-STANDARD, Product Reference Manual, Page: 45 / 103

RESTART MODE
PRODUCT REFERENCE GUIDE
37
RESTART MODE
An opaque object detected by the beams causes the switching of the OSSD outputs (i.e.
the opening of the safety contacts - SAFE condition).
The restart of the ESPE (i.e. the closing of the OSSD safety contacts -
NORMAL OPERA -
TION ) can be carried-out in two different ways:
Automatic Restart (All models)
When an opaque object is detected, the ESPE enters in OFF state. Then, after the object
has been removed from the controlled area, the ESPE returns in ON state.
The response time is the time between the object introduction in the protected area
and the OSSDs achieving the OFF state.
The recovery time is the time within OSSDs go in the ON state after the object is
removed.
NOTE: These times are function of length and they'll be treated later (con -
sult the “Available Models and Response Times” for further details).
OSSDs
FREE
INTERCEPTED
ON
OFF
Recovery Time
Response Time
> 80 ms
OPTICAL PATH