Set Up The Discrete Inputs - Hach Polymetron 9500 User Manual

Figure 24 Frequency control function
1 High limit
2 Deadband
3 Setpoint
• Warning function
Option Description
WARNING Sets the level for warning activation. Refer to the sensor manual for the numbers for individual
warning messages.

Set up the discrete inputs

Use these inputs to switch closure inputs or logic level voltage inputs.
1. Push the menu key and select Polymetron 9500 SETUP>DISCRETE INPUT SETUP.
2. Select the desired channel (INPUT 1, INPUT 2 or INPUT 3) and push enter.
3. Select a control logic option and push enter.
Option Description
DISABLE This channel is disabled and not used.
ON/HIGH This channel is active when either the switch input is On (or closed), or the logic level voltage
input is at a High level.
OFF/LOW This channel is active when either the switch input is Off (or opened), or the logic level voltage
input is at a Low level.
4. Select a warning option and push enter.
Option Description
OFF An active discrete input does not trigger a device warning.
ON An active discrete input triggers a device warning.
36 English
4 Low limit
5 Cycle duration
6 Time (x-axis)
7 Selected source (y-axis)