sc2-2. Pepperl+Fuchs, sc2-2. Datasheet - Page 8

• Manufacturer Part Number: sc2-2.
• Description: Factory Automation
• Manufacturer: Pepperl+Fuchs

2
2.1
2.2
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Subject to reasonable modifications due to technical advances.
Pepperl+Fuchs Group • Tel.: Germany (06 21) 7 76-0 • USA (330) 4 25 35 55 • Singapore 67 79 90 91 • Internet http://www.pepperl-fuchs.com
The SC2-2 control unit
Product description
With its light barriers of Type SL, the SC2-2 control unit represents a one or two-beam photoelectric protec-
tive device. It consists of 2 modules,
- the OSSD Module with a 2-channel relay output (OSSD) and
- the light barrier module.
Working principle
Two protective beams are generated by the two light barriers that can be connected to the light barrier mo-
dule. Depending on the type of light barriers, the detection range of the protective beams may be 10 m,
30 m or 65 m. Interruptions in a light beam are determined by the light barrier module.The OSSDs and the
OSSD message output in the OSSD Module are turned off. Downstream equipment in the machine control
system responds by turning off the dangerous motion.
The startup / restart lock and monitoring of EDM feedback (relay monitor) can be turned on or off as required
with switches on the SC2-2.
Internal tests ensure functional safety even if no external tests are performed. In addition, there is a test
input that the operator can use to initiate the test externally. The OSSDs are turned off when this happens.
If no errors are detected during the test, the OSSDs switch back on after 150 ms. If the start/restart interlock
is activated on the control unit, the "Restart" (Start) function is turned on after the test has been successfully
completed.
If an error is detected by the test, the OSSDs remain in the Off state. In addition, a flashing signal is gene-
rated on the "Readiness for startup" output (flashes at a rate of once per second) and the two error LEDs
on the SC2-2 display the error that was detected.
Copyright Pepperl+Fuchs, Printed in Germany
The SC2-2 control unit
SC2-2 control unit