Rockwell Automation Publication 450L-UM001F-EN-P - March 2022
11
Chapter
1
Product Overview
General Description
The 450L GuardShield™ safety light curtain family consists of general-purpose
presence sensing devices that are designed for use on hazardous machinery
for both Perimeter Access Control (PAC) and Point of Operation Control (POC)
applications. The product family is certified as Type 4 electro-sensitive
protective equipment (ESPE) (as defined by EN 61496-1 and IEC 61496-2). This
certification allows this product to be used in applications that require PLe
category 4 according to EN ISO 13849-1.
The 450L PAC safety light curtains are based on the 450L-E POC safety light
curtain models and are offered in single-beam (Area Access Control [AAC]), 2-
beam, 3-beam, and 4-beam options and range in length from 150…1050 mm
(5.91…41.34 in.).
The 450L POC safety light curtains are offered in multiple lengths from
150…1950 mm (5.9…76.77 in.) in increments of 150 mm (5.9 in.). Each length is
available in finger (14 mm [0.56 in.]) or hand (30 mm [1.19 in.]) resolution with a
basic set of sensing functions.
The 450L POC safety light curtain family consists of two product lines:
•
450L-B (Basic)
•
450L-E (Enhanced)
The 450L-B safety light curtain is suitable for basic ON/OFF applications,
whereas the 450L-E safety light curtain provides enhanced features for more
sophisticated applications.
provides an overview of the differences
between the two product versions:
Table 1 - Differences Between 450L-B and 450L-E/450L PAC Safety Light Curtain Systems
Description
450L-B
450L-E and 450L PAC
Alignment aid
Two zone indicator light-emitting
diode (LED)
Integrated laser alignment and two zone indicator
LED
Operation range finger
resolution, min…max
0.5…4 m (1.6…13.12 ft)
0.5…9.0 m (1.64…29.53 ft)
(1)
(1)
Not applicable for 450L PAC, which is based on 450L-E hand resolution.
Operation range hand
resolution, min…max
0.9…7.0 m (2.95…22.97 ft)
0.9…16.2 m (2.95…53.15 ft)
Functionality
Start modes
External device monitoring (EDM)
Operation range
Start modes
EDM
Operation range
Beam coding
Blanking
(2)
Muting
Cascading
(2) Blanking is not available on 450L PAC safety light curtain models.
CIP Safety™
functionality
(3)
(3) Only with appropriate plug-in and module. CIP safety is not available on 450L PAC models
Yes
Yes
