Honeywell SYA14 Series Manual page 572

INCORRECT INSTALLATION
The distances between sensors SM1 & SM2 and the safety light curtain shall be
calculated taking into account the size of the object which must be detected : the
object must interrupt the safety light curtain detection beams, before releasing both
sensors SMs. The distance between the first sensor SM1 and the protective field
must be smaller than the size of the vehiculed object, otherwise the muting sequence
stops as soon as the first sensor SM1 is released and the intrusion of the object inside
the protective field leads to the immediate stoppage of the machine.
Figure 3.4 : One-way muting using two sensors
mechanical guarding
A B
with :
A : distance between SM1 and SM2, t
B : distance between SM2 and ESPE, t
C = B + L, t = C/V
C
where V is the object velocity, L is the object length
and t , t , & t are the object transit times.
A B C
FACTORY SETTINGS
•
The muting module is set in the conveyor mode on delivery.
•
The maximum timing tmax allowed between SM sensors is set to 1 seconde on
delivery. It can be modified to the following values : 2 s, 4 s, or 8 s.
• The setting of the timing tmax also sets the muting maximum duration ∆max. In the conveyor
mode available on delivery , the muting duration is set to 2 mn on delivery. It can be modified to
the following values : 4, 8 or 60 mn.
•
Refer to chapter 2.4.2 SM inputs, to select tmax and ∆max.
38
< ∆ mn max.
t
C
!
SM1
8 ms < t < tmax
A
SM2
t < 6 s max.
B
OSSDs
ESPE
Muting
lamp
OSDs
Muting MUTING
module
C
∆max & tmax :
= A/V
A
see chapter 2.4.2 SM inputs
= B/V
B
107004-15 EN FR26 ROW 0899 Printed in France
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