Fault states
This page describes typical fault states during practical operation of the Vanbase 6R and the measures to be derived from them.
Typical fault states
| Situation | Possible cause | Expected consequence / required measure |
|---|---|---|
| The fuse of an output trips | Overload, short circuit, defective load, faulty wiring | Determine the cause. Only replace the fuse when de-energised and only with the same type and rating. |
| The upstream fuse of the supply cable trips | Fault in the supply cable, incorrect fuse protection, wiring error | Switch off the power supply. Check the wiring and the dimensioning of the supply cable in full. |
| Unusual heating at terminals or cables | Loose terminal connection, cable cross-section too small, load too high | Take the device out of service and inspect the installation. Check contact resistances and cable dimensioning. |
| A load does not switch as expected | Incorrect assignment of input and output, configuration error, wiring error | Check the inputs and outputs as well as the configuration. Then carry out a complete function test. |
| No output switches any more | System fuse defective; it also supplies the relays of the outputs | Switch off the power supply. Check the SYS system fuse and replace it if necessary. The system fuse must not exceed 2 A. |
| Recurring malfunction at an output | Recurring overload, defective load or unsuitable installation | Do not ignore the fault by repeatedly switching back on. Check the affected circuit in full. |
| Incorrect behaviour in networked systems | Unsuitable CAN connection, particularly in isolated system layouts | Check the CAN system layout. In isolated systems, use only suitable adapters and exclusively the intended CAN lines. |
| CAN bus connection error | CAN bus terminating resistor not plugged in | Plug in the CAN bus terminating resistor. Then check the connection and the system function again. |
| Visible damage, burning smell or scorch mark | Thermal overload, material defect or mechanical damage | De-energise the device immediately and do not continue to operate it. Inspection by qualified personnel is required. |
Principles for safe return to service
- The cause of the fault must be unambiguously eliminated before switching on again.
- Simply changing a fuse without investigating the cause is not permitted.
- A complete function test must be carried out after every repair, change to the wiring or change to the configuration.
- If abnormalities recur, support must be contacted.