How do I set my older Hardy Instrument memory back to factory default?

My Hardy controller has drifting weight readings and the set point and calibration data has been lost. This happened after lightning hit our plant causing erratic performance on our older HI 2101 Proweigh and HI 2151/20WC and our newer HI 2110WI and HI 2151/30WC units. How can I recover from this problem?

Not all weight controllers have the ability to return the memory to factory default settings and may need to be returned to the factory for repair. For additional information on the cause of memory corruption search Web Tech for the following: Power surges, spikes, EMI, ESD, load cell line noise and/or static discharges.

Power surges, power spikes, load cell line noise and/or static discharges can corrupt your Hardy Instrument's memory, causing drifting weight readings, loss of SET POINTS and calibration data, or erratic performance. In some cases, rebooting the instrument will resolve the problem, but in other cases, the Random Access Memory (RAM) must be cleared and default parameters loaded back into memory. When this is performed the instrument must be re calibrated and all SET POINTS and OPTION data must be re-entered as if the unit was just being installed for the first time.

WARNING: This process returns the instrument to the factory default parameters.

WARNING: To prevent ESD damage, always observe proper grounding (including wearing a grounded wrist strap) when working on electronic instrumentation on your workbench.

The first thing you should do is to collect and record your current data using self-test. Press test-clear and the entries will scroll by. Press down arrow to pause and up arrow to continue.

SETTING INSTRUMENT MEMORY TO FACTORY DEFAULTS TO CORRECT ERRATIC SYSTEM PERFORMANCE FOR HI 2101, HI 2150, HI 2151, HI 2110WI, HI 2151/20WC AND THE HI 2151/30WC INSTRUMENTS:

NOTE: There are different methods of clearing Memory on the HI 2151/20WC units. The proper method to use is determined by the age of your weight controller. The older weight controllers (before C2®) have 6 pin load cell connectors (J 1). The newer weight controllers have an 8 pin (J 1) load cell connector. The software method depends on the software revision and may not work. Check the Test/Diagnostic read out for your firmware level.

SOFTWARE PROCEDURES: HI 2101, HI 2150, HI 2151 and the HI 2151/20WC (Revision 0650-0035 firmware and older)

1. Enter configuration.
2. Press the Up Arrow key until "Motion" is displayed.
3. Press the Enter key.
4. Press the -/Test/Clr key.
5. Press the numeric keys 7 3 2 1.
6. Press the Enter key.
7. Press the Up Arrow key until "End Cal" is displayed.
8. Press the Enter key.

HARDWARE PROCEDURES: HI 2101 Proweigh (OBSOLETE)

1. Using a small, flat-head screwdriver, gently pry up the U 6 chip separating it from the black IC socket on the board.
2. Short out each row of pins by touching the shaft of a screwdriver across all of the pins on each row.
3. Position the U 6 chip over the socket labeled "U 6" making sure the notch on the chip matches the diagram on the board & that the chip is placed flushed to the right.
4. Gently insert one row of pins partially into the socket to align the chip. Now, carefully work the other row of pins into place and gently press the chip into the socket.
5. Inspect the pins and verify that there are no bent or misaligned pins as a result of the installation.

HARDWARE PROCEDURES: HI 2151WC (OBSOLETE)

1. Remove power and disassemble unit.
2. Gently remove U 15 on the PWA-ANALOG/DIGITAL board.
3. Short out each row of pins by touching the shaft of a screwdriver across all of the pins on each row.
4. Gently insert U 15 into slot, one row at a time, positioning grooved side towards U 13.
5. Reassemble unit and begin calibration.

SOFTWARE PROCEDURES: (HI 2151/20WC units ONLY firmware 0650-056 and older) (OBSOLETE)

To save the configuration information using the 59 save feature, you can use the following procedures:

SAVE DATA PROCEDURE:

1. PRESS 5,9 ENTER SAVE
2. PRESS ENTER