Flowserve NRS1-41 - Manual (Page 14)

14
System Malfunctions
Faulty installation and/or configuration of CAN bus components, excessive
temperatures in the devices, defective electronic component parts or electromagnetic
interferences of the supply system can result in system malfunctions.
There are four system malfunctions that might occur in the level electrode and the
switching controller:
■ Max. admissible temperature in electrode terminal box exceeded
■ No or faulty communication between controller and electrode
■ Fault in CAN bus
■ Failure of 24 V power supply unit built in switching controller NRS 1-41
The malfunction information is updated with every self-test (switching controller:
every 3 sec., level electrode: every 10 sec.) If no faults have occurred the malfunction
information will be deleted automatically. If faults persist the malfunction information
remains stored.
As part of the automatic self-testing routine of the switching controller, the switching
off of the output relays every 6 hrs is checked, too. If a fault is detected the signal
output (terminals 7 and 8) will be opened and closed as a function of time.
The terminal strip of the NRS 1-41 is live during operation.
This presents the danger of electric shock.
Cut off power supply before mounting or removing the equipment.
Danger