Datasensing SH4 BASE-STANDARD, Product Reference Manual, Page: 101 / 103

PRODUCT REFERENCE GUIDE
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ESPE (Electro-sensitive protective equipment)
Assembly of devices and/or components working together to activate the protective
disabling function or to detect the presence of something and including at least: a sen -
sor, command/control devices and output signal switching devices.
Force-guided contacts
Relay contacts are force guided when they are mechanically connected so that they
must switch simultaneously on input change.
If one contact of the series remains “welded”, no other relay contact is able to move.
That relay characteristic allows the use of EDM function.
Interlock
Operating state of ESPE in Manual Restart Mode when all beams are free but the Restart
command hasn’t been received yet.
Machine operator
Qualified person allowed to use the machine.
Min. installation distance
Min. distance necessary to allow machine dangerous moving parts to completely stop
before the operator can reach the nearest dangerous point. This distance shall be mea -
sured from the middle point of the detecting area to the nearest dangerous point. Fac -
tors affecting min. installation distance value are machine stop time, total safety system
response time and light curtain resolution.
MPCE (Machine primary control element)
Electrically-powered element having the direct control of machine regular operation so
as to be the last element, in order of time, to operate when the machine has to be
enabled or blocked.
N.O.
Normally opened
N.C.
Normally closed
Normal Operation
Operating state of ESPE when all beams are free, OSSD LED lit GREEN in SL light curtain
OSSD1 and OSSD2 are switched ON.
OSSD (Output signal switching device)
Part of the ESPE connected to machine control system.
When the sensor is enabled during standard operating conditions, it switches to dis
-
abled status.
Protective device
Device having the function to protect the operator against possible risks of injury due to
the contact with machine potentially-dangerous parts.
Qualified operator
A person who holds a professional training certificate or having a wide knowledge and
experience and who is acknowledged as qualified to install and/or use the product and
to carry out periodical test procedures.