Rockwell Automation Publication 450L-UM001D-EN-P - December 2019 37
Safety Function Chapter 4
Table 8 - Status of OSSDs for Different Cases of Reduced Resolution in Combination with Fixed
Teach in Blanking
Resolution with Blanking
Tabl e 9 shows resolution of a 450L-E safety light curtain for different blanking
mode combinations.
Table 9 - Resolution
Case 1 23456789101112
IR-
Beam
Reduced
Resolution
Deactivated
Reduced Resolution 1 Beam and
Teach-in Fixed Blanking
Reduced Resolution 2 Beams
and Teach-in Fixed Blanking
N
N+1
N+2
N+3
N+4
N+5
N+6
Status
OSSDs
ON ON ON OFF OFF ON ON ON ON OFF OFF OFF
ATTENTION: Actuation of the reduced resolution mode, changes the
resolution of the 450L-E safety light curtain.
GuardShield
Resolution
(No Blanking) Configured Blanking Type Configured Resolution
14 mm (0.56 in.)
No blanking 14 mm (0.56 in.)
Fixed blanking
Single object: 28 mm (1.11 in.)
Multiple objects: 42 mm (1.66 in.)
Reduced resolution one Beam 23 mm (0.91 in.)
Reduced resolution one Beam in combination
with Fixed Teach-In blanking
42 mm (1.66 in.)
Reduced resolution two Beams 33 mm (1.30 in.)
Reduced resolution two Beams in combination
with Fixed Teach-in blanking
52 mm (2.05 in.)
30 mm (1.19 in.)
No blanking 30 mm (1.19 in.)
Fixed blanking
Single object: 53 mm (2.09 in.)
Multiple objects: 82 mm (3.23 in.)
Reduced resolution one Beam 44 mm (1.74 in.)
Reduced resolution one Beam in combination
with Fixed Teach-In blanking
82 mm (3.23 in.)
Reduced resolution two Beams 63 mm (2.49 in.)
Reduced resolution two Beams in combination
with Fixed Teach-In blanking
100 mm (3.94 in.)
IMPORTANT After each configuration or reconfiguration of a GuardShield safety light
curtain, the configuration of the safety light curtain is tested using an
appropriate test piece.