How do I clear memory on my HI 4000 series controller?

Corruptions in memory are normally a result of power surges, spikes, or dips, load cell line noise and/or static discharges. If the memory in your HI 4050 or HI 4060 gets corrupted you will have to clear the ram memory to clear the corruption. If this is an isolated case, then clearing ram will solve the problem. If the problem returns, then the cause of corruption should be found and resolved.

Possible solutions might be:

1. Ensure you are using a "computer clean" dedicated power source. This is probably the most common cause of a memory corruption.

2. Check all cable routing. Low voltage (less than 24 v dc) should be routed away from any higher voltage lines. This would also include keeping higher voltages away from close proximity to the unit itself.

3. Check for proper shielding and grounding of low voltage lines.

4. Check for proper grounding of the instrument, PLC, load cells and/or sensors. There should not be a difference of potential between the grounds of the different components of the system.

NOTE: Clearing memory on your HI 4050 will require you to re-enter all the parameter settings, option settings, set points, and calibration settings into your unit.

CLEARING MEMORY ON HI 4000 SERIES UNIT

When the memory is cleared in a unit all previously entered operator parameters are returned to the original factory default conditions. The system must be re calibrated and all set point and option parameters re-entered. It is strongly recommended that before clearing memory, all calibration, option, and set point values are recorded.

There are two methods of clearing memory on the HI 4000 units, which are:

CLEARING THE MEMORY FROM THE UNIT:

1. Remove the SD card from the unit.
2. Power the unit.
3. Insert the SD card in the unit with power on.
4. Enter into a menu and make a change.
5. Enter to accept the change and exit the menu.
6. At this time the memory in the SD card has been overwritten with default settings.

CLEARING THE MEMORY ON A COMPUTER:

1. Remove the SD card from the unit.
2. Place the SD card in a card reader and find the file "PARAMS.TXT".
3. Delete the file "PARAMS.TXT".
4. Replace the SD card into the unit and apply power.
5. The unit will be at factory default settings.

Now you will need to enter parameter settings, option settings, set points, and calibration settings into the unit.