Specifications

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Appendix F
Procedure to Reset the EEprom to Factory Settings
The ICoT Positioner is a digital device. Positioner operation relies on data that is stored in the posi-
tioner’s EEprom chip. Calibration and configuration data that has been established during the posi-
tioner’s calibration is stored in the EEprom. Under abnormal conditions this stored information can
become corrupted. If this occurs it is necessary to reset the chip and re-calibrate the positioner.
1.) Remove power to the positioner. This can be done by removing the plug-in style terminal strip.
2.) Press and hold the CAL button while replacing the terminal strip (returning power). The LCD
will show ICoT Positioner-Rev ” for several seconds while holding down the CAL button.
3.) Continue to hold the CAL button until the LCD shows “reset EEprom values to Mfg values.
When this statement appears release the CAL button.
4.) After releasing the CAL button you will be prompted to enter 4.0 mA. Change your input to the
positioner to exactly 4.0 mA and press the CAL button. If your zero position signal is other than
exactly 4.0 mA then use the Up/Down arrow buttons to adjust the value shown on the posi-
tioner’s LCD to match the zero position mA and press the CAL button.
5.) You will then be prompted to enter 20 mA. Change your input to the positioner to exactly 20.0
mA and press the CAL button. If your full-scale position signal is other then exactly 20.0 mA
then use the Up/Down arrow buttons to adjust the value shown on the positioner’s LCD to match
the full-scale position mA and press the CAL button.
6.) The positioner will automatically return to normal operating mode.
7.) If desired, follow the normal calibration procedure as described in the manual.