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Rockwell Automation Publication 450L-UM001F-EN-P - March 2022
Chapter 4 Safety Function
Resolution with Blanking
shows resolution of a 450L-E safety light curtain for different blanking
mode combinations.
The borders between two adjacent blanking zones are especially critical for the
resolutions.
provides the largest resolution for a complete light curtain
system for different DIP switch settings.
For blanking if there is cascading, see
Cascading and Blanking on page 46
.
Muting
The cascading feature is only available for the 450L-E and 450L PAC safety light
curtain. To enable the muting functionality, the receiver plug-in 450L-APR-
MU-8 must be installed.
N+3
N+4
N+5
N+6
Status
OSSDs
ON
ON
ON
OFF
OFF
ON
ON
ON
ON
OFF
OFF
OFF
Table 8 - Status of OSSDs for Different Cases of Reduced Resolution in Combination with Fixed
Teach in Blanking
Case
1
2
3
4
5
6
7
8
9
10
11
12
ATTENTION:
Actuation of the reduced resolution mode changes the
resolution of the 450L-E safety light curtain.
Table 9 - Resolution
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.