sc2-2. Pepperl+Fuchs, sc2-2. Datasheet - Page 18

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

16
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
Figure 3.3: Sample connection of relay monitor
Information
The work circuit of the external switching elements must be protected by a fuse with a nomi-
nal value of maximum 60 % of the load capacity of the contacts to prevent the contacts from
fusing. The external switching elements are monitored with a delay of 180 ms following the
switching process. If the new switching state is not assumed by the time the monitoring
period expires (180 ms), the SC2 switches into interlock state and shows the cause of the
error on the error LEDs (E1 and E2). This error should be acknowledged after the cause is
eliminated by a reset on SC2.
13 14 15 16
SC2
K1
K1K
7
8
Copyright Pepperl+Fuchs, Printed in Germany
SC2-2 control unit
Operating modes