F3S-TGR-SBx-KxC series User’s
manual
25
•
The TEST/RESTART button must be located so that the operator can
see the protected area when restarting
,
testing or overriding.
•
The external illuminated indicator for
muting override
enabled must
be located so that it can be seen from all sides of operation.
•
If the
muting
sensors are installed very close to the SLC, care must
be taken that the receivers of the sensors are mounted on the
mirror side of the SLC in order to avoid interference.
•
The system is protected against the possibility of faults due to
damage to the wires; however we recommend laying the cables for
all connections in order to avoid damage to the connection cables.
7.5
TIMING CONSTRAINTS (muting function)
a) The
muting
request must take place with the correct timing
sequence: the Muting A input must be enabled first and then the
Muting B input. The request for the latter must be made within a
maximum of 3 seconds and not before 30 ms (TM) after enabling
Muting A input. Otherwise the
muting
function will not be enabled.
An incorrect sequence on the
muting
inputs will not start the muting
process.
b)
Muting
status can be maintained for an unlimited period of time as
long as the muting signals are valid.
Timing chart
F re e
In te rru p te d
O N
O F F
O N
O F F
O N
O F F
A c tiv e
O F F
S L C
O S S D
M u tin g
In p u t A
M u tin g
In p u t B
M u tin g
S ta tu s
0 .0 3 s e c < T m < 3 s e c
A
muting
request cannot be made if the SLC outputs are open, that
is to say when the beams have been interrupted.
F3S-TGR-SBx-KxC series User’s
manual
26
7.6
Timing constraints (for SLCs with postfix “–MTL” at the ordering
code)
a) The
muting
request must take place with the correct timing
sequence: the Muting A input must be enabled first and then
the Muting B input. The request for the latter must be made
within a maximum of 3 seconds and not before 30 ms after the
enabling of the Muting A input. Otherwise the
muting
function
will not be enabled. An incorrect sequence on the
muting
inputs
will not start the muting process.
b) There are 5 seconds maximum from the activation of muting to
the package entrance in the protected area by interrupting the
SLC. If this time is exceeded, muting function will stop
immediately.
c) As long as a package interrupts the protected area (at least one
beam), the muting function is maintained
d)
Muting
status can be maintained for an unlimited period of time
as long as the muting signals are valid.
Timing chart
Free
Interrupted
ON
OFF
ON
OFF
ON
OFF
Active
OFF
SLC
OSSD
Muting
Input A
Muting
Input B
Muting
Status
Ts< 5 sec
0.03 sec < Tm < 3sec
