Product Description; Special Features; Operating Principles Of The Device - SICK L 4000 Manual De Instrucciones

Operating Instructions
L 4000 system
3

Product description

8010009/TI69/2009-11-26
Product description
This chapter provides information on the special features and proper-
ties, the operating principle, the structure and the function as well as
the various operating modes of the L 4000 system.
Please read this chapter before mounting, installing and commis-
sioning the L 4000 system.
3.1

Special features

Protection with either internal or external (realised on the machine)
restart interlock,
Optional external device monitoring (EDM),
Connection of up to 8 sensor pairs (standard: 4, cascading: 8),
Diagnostics with 7-segment display.
3.2

Operating principles of the device

The L 4000 system comprises the safety evaluation device UE 401
to which up to 4 L 4000/L 400 sensors (sender/receiver combina-
tions) can be connected as individual pairs, or up 8 sensors can be
connected in cascade.
The safety evaluation device UE 401 represents the connecting ele-
ment between sensors and machine controller.
The L 4000 system provides the following operating modes
With restart interlock/with external device monitoring
With restart interlock/without external device monitoring
Without restart interlock/with external device monitoring
Without restart interlock/without external device monitoring
The status as delivered is
With restart interlock/with external device monitoring.
Setting the operating mode is described in chapter 5 "Electrical in-
stallation".
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Chapter 3
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