4.8. Statuses

The MagnaLOAD electronic load has various statuses corresponding to its present state of operation. These statuses can be viewed on the front panel, programmatically by computer command, or using the 25-pin user I/O connector. The available statuses are as follows:

Enabled

The MagnaLOAD electronic load’s input is engaged and processing power.

Disabled

The MagnaLOAD electronic load’s input is disengaged and all systems are normal. The MagnaLOAD electronic load is awaiting a START command to engage its input. When in a Disabled state, there is an electrical disconnect between the product’s dissipative elements and the DC input terminals through a high speed switching device.

Soft Fault

The MagnaLOAD electronic load’s input is disengaged as a result of a soft fault that occurred. A soft fault occurs when an user-programmed limit is reached, such as a trip setting. A description of the soft fault is displayed on the message line. A soft fault can be cleared with the CLEAR function, placing the MagnaLOAD electronic load into a Disabled status. When in a Soft Fault state, there is an electrical disconnect between the product’s dissipative elements and the DC input terminals through a high speed switching device.

Hard Fault

The MagnaLOAD electronic load’s input is disengaged as a result of a hard fault that occurred. A hard fault is a system shutdown resulting from an operating condition that has the potential to damage the product, for example, exceeding the products specifications. A description of the hard fault is displayed on the message line. A hard fault fault can only be cleared by power cycling the product. When in a Hard Fault state, there is an electrical disconnect between the product’s dissipative elements and the DC input terminals through a high speed switching device.

Caution

Ignoring hard faults and repeatedly operating the MagnaLOAD electronic load in a manner that triggers a hard fault will eventually result in product damage.