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11.. . APPENDIX A: MASTER ICON REFERENCE
USING THE OMP-MODL 11-15
THERMISTOR INPUT ICON (MLIM-4)
FUNCTION:
RTD, resistance, and thermistor signal inputs can all be handled with the MLIM-4. With
the MLIM-4 installed in a OMP-MODL, these respective function icons become available
for use in Program Nets.
As a thermistor input, the icon samples the resistance of the connected thermistor,
converts it to temperature and passes it along to the next icon. As thermistors have high
ohm/C ratios, lead wire error is negligible and only the 2-wire configuration is supported.
This channel/icon can be changed to an RTD or resistance input channel by selecting the
Change button.
INPUTS:
Hardware: No signal input shown on icon for Program Net connections.
Update: The input is sampled every time an Update command is received on the
Update input and the Enable terminal is True.
Enable: Processing of the icon is allowed when Enable pin is unconnected or
connected and the Enable signal is TRUE.
OUTPUTS:
Output Signal: Data type signal. The Units of the output are degrees C or F,
selectable from the icon configuration dialog box.
ICON CONFIGURATION DIALOG BOX: