Datasensing SH4 BASE-STANDARD, Product Reference Manual, Page: 46 / 103

FUNCTIONS
38
SH4 BASE-STANDARD
Manual Restart (Standard models only)
After the ESPE has detected an opaque object in the controlled area, the light curtain
begins its normal functioning only after a proper signal pattern on RESTART input (
pin 1
,
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:
Figure 6: OSSDs behavior in Manual Restart Mode and Restart Pattern
The outputs go high 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.
Configuration of Restart mode
The configuration of Restart mode is done by connecting the MAN_AUTO signal ( pin 8 ,
red ) to one of the OSSD as described below:
• OSSD1, pin 5 ( grey ) to setting the automatic restart function
• OSSD2, pin 6 ( pink ) to setting the manual restart function
CAUTION
Carefully assess risk conditions and reset modes. In applications protect -
ing access to dangerous areas, the automatic reset mode is potentially
unsafe if it allows the operator to pass completely beyond the sensitive
area.
In this case, the manual reset or, for example, the manual reset of the SE-
SR2 relay (see “Couple arms” on page 79) is necessary.
OSSDs
INTERLOCK STATUS
RESTART INPUT
0.5 S
ON
OFF
ON
24V
0V
OFF