Table of Contents
Advertisement
FUNCTIONS
Manual Restart
After the ESPE has detected an opaque object in the controlled area, the light curtain
begins its normal functioning only after the activation of the RESTART signal (usually
connected to a normally open push button) and after the object has been removed
from the controlled area; see the restart timing diagram below:
OSSDs
INTERLOCK STATUS
RESTART SIGNAL
The outputs go ON after a time that is the maximum value between the recovery time
and the time of restart high (more or equal to 0.5 s), so this time can be any between
0.5 s and 5 s.
In the timing diagram above the object is already removed.
56
SH4 ADVANCED
Figure 31: OSSDs behavior in Manual Restart Mode and Restart Pattern
CAUTION: Carefully assess risk conditions and reset modes. In applications
protecting access to dangerous areas, the automatic reset mode is poten-
tially unsafe if it allows the operator to pass completely beyond the sensi-
tive area.
In this case, the manual reset or, for example, the manual reset of the SE-
SR2 relay (see "Safety Units" on page 123) is necessary.
NOTE: Please carefully read the instructions for the correct functioning
before powering the light curtain on.
0.5 s
ON
OFF
ON
OFF
ACTIVE
INACTIVE
Advertisement
Table of Contents
