PLS GB
158
8 009 810/OA87/13-09-04 Operating Instruction
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PLS © SICK AG
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Industrial Safety Systems
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Germany
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All rights reserved
7. Diagnosis
7.1 Diagnostic elements
Three LEDs displaying the operation status of the PLS are located
on the top of the PLS housing.
The green and red LEDs are allocated to the safety output.
The yellow LED signals – depending on the setting of the PLS – an
object in the warning field and/or dirt contamination of the front
screen.
Should the device fail the self-test (system error), this is also dis-
played by the yellow LED.
Diagnosis with PLS LEDs:
Status green
yellow
red
Protective field clear
Object in protective field
Object in warning field
Dirt warning
*
1Hz
Dirt contamination *
Self-test failed **
4Hz
*
Dirt contamination of the PLS front screen:
see chapter 7.2 Maintenance!
** Self-test failed: see chapter 7.3 Service!
The LEDs give the first diagnosis of the system status. Authorized
personnel have, with the help of the user software supplied with the
unit, access to an extensive diagnostic system (see chapter User
Software in the PLS technical description).
Summary of Contents for PLS 10X-317
Page 340: ......
