Initial Start-Up
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10.3 Aligning the Emitter and Receiver
The signal strength is shown on the segment display for easy alignment of the emitter and receiver. This
feature is active automatically for 30 s after switch-on.
During parameters configuration, the display can be shown for a lengthy period of time (up through timeout)
(see
). The signal strength should be as high as possible to ensure safe operation
and avoid unnecessary process interruptions.
The signal strength display is divided into five levels:
Display
Meaning
Explanation
OSSD
RES
SIG LOW
ERROR
Too weak
• Receiver not detecting any emitter beams
• No synchronization possible
• OSSDs are not activated
Alignment must be improved to commission the ESPE.
OSSD
RES
SIG LOW
ERROR
Weak
• Signal strength is weak.
• Synchronization takes place (SYNC point)
• LED SIG LOW lights up
• OSSDs can be activated
Improve the alignment to avoid unintentional switching due to
contamination, for example.
OSSD
RES
SIG LOW
ERROR
Medium
• Signal strength is adequate with a small reserve for changes
(e.g. contamination, alignment)
• Synchronization takes place (SYNC point)
• OSSDs can be activated
If possible, improve the alignment further to achieve higher
process reliability.
OSSD
RES
SIG LOW
ERROR
Good
• Signal strength is good with a medium reserve for changes
(e.g. contamination, alignment)
• Synchronization takes place (SYNC point)
• OSSDs can be activated
If possible, improve the alignment further to achieve higher
process reliability.
OSSD
RES
SIG LOW
ERROR
Very good
• Signal strength is very good
• Synchronization takes place (SYNC point)
• OSSDs can be activated
The optimal alignment for high process reliability has been
achieved.
