20
Replacing and disposing of the logic unit
For the disposal of the equipment observe the pertinent legal regulations concerning waste disposal.
Replacing the logic unit
1. Switch off supply voltage.
2. Undo cover screws
8
and remove cover for terminal block
7
.
(Fig. 2)
3. Unplug control cables from terminal strip
d
and pull cables out of the cable gland.
4. Detach connecting cables for limit switches.
5. Remove the logic unit.
6. Install and connect new logic unit.
7. Attach connecting cables for limit switches.
8. Switch on supply voltage
9. Initiate first purging process.
Disposal
If faults occur that are not listed above or cannot be corrected, please contact our service centre or
authorized agency in your country.
Indication, diagnosis & remedy
- continued -
Troubleshooting
- continued -
Fault in program sequence, safety circuit in level switch interrupted
Error
Remedy
Display & adjustor pad signals “Limit switch defective”.
Replace defective limit switch.
Failure of voltage supply during purging time, standby
input deactivated and safety circuit interrupted
(NRS 1-5X).
Apply supply voltage, continue purging process.
Содержание SRL 6-50
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