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Signal converter SK 20.2
33
E 5 Power supply U
1
not connected (pin 25/45).
E 10 Power supply U
2
not connected (pin 15/35).
E 11 Current loop cut off or load resistance too big.
Ready signal is not switched off!
Figure 14: Error messages 5 - 11
5.2 Replacing the SK20.2
If replacement of the signal converter is necessary in the case of service,
the following procedure is recommended:
1. Check whether the replacement converter corresponds to the
replacement. All parts of the type designation must be identical. If there
are differences, contact your dealer.
2. Make a note of all DIP switch settings and cable assignment, if not
already done. This will be needed later for the new signal converter.
3. Switch off power supplies U1 and U2 and secure against being
switched on again.
4. Disconnect the cables.
5. Disassemble defective signal converter.
6. Set the DIP switch settings on the new signal converter.
7. Mount new signal converter. In doing so, observe the notes from
chapter 3.1.
8. Reattach the earth connection.
9. Reconnect all cables.
10. Connect voltages U1 and U2 to the new signal converter.
11. Further commissioning of the new signal converter as described in
Chapter 4. Observe safety instructions.
12. Send the defective signal converter back to the dealer.
off
off
off
off
off
on
8026616/2021-03-11 • Subject to change without notice • SICK AG • Waldkirch • Germany • www.sick.com