Leuze electronic
MSI-TB
16
S
[mm]
= Safety distance
t
a
[s]
= Response time of the protective device
t
i
[s]
= Response time of the safety relay
t
m
[s]
= Stopping time of the machine
t
t
[s]
= Test interval time of the safety relay
Table 6.2:
Values for t
i max
With multi-axis installation, the light beams must run parallel to the reference plane (e.g. floor) and must
be aligned mutually parallel.
The beam directions are to be set oppositely in each case (see figure 6.1). Otherwise, the light beams
could cause mutual interference and disturb reliable function.
a
Transmitter
b
Receiver
Figure 6.1: Multi-axis arrangement
t
i max
MSI-TR1B
80
MSI-TR2B
150
MSI-TSB
620
If longer stopping times are determined during regular inspections, an appropriate additional time
must be added to t
m
.
a
a
a
b
b
b
Reflective surfaces can indirectly deflect the transmitter beams to the receiver. In this case, interruption
of the protective field is not detected.
Make certain that all reflective surfaces are the necessary minimum distance away from the protective
field.
