Set Up The Discrete Inputs - Hach sc200 User Manual

Option
Set units
Set parameter
3. Push ENTER to save the selection or setting and return to the Calculation menu.

Set up the discrete inputs

Use these inputs to switch closure inputs or logic level voltage inputs.
1. Press the MENU key.
2. Select sc200 Setup and push ENTER.
3. Select Discrete Input Setup and push ENTER.
4. Select the desired channel (Input 1, Input 2 or Input 3) and push ENTER.
5. 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.
6. 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.
7. Select an output mode option and push ENTER.
Option Description
Active Output level continues to represent operating conditions.
Hold Output level is held static.
Transfer Output level moves to a pre-configured value.
8. Select the sensors that will have their outputs (analog and relay) affected when one of the
discrete inputs becomes active. Push ENTER.
9. Use the arrows to select the On Delay value (the duration time delay between the discrete input
activation and the configured response of the controller). Push ENTER.
10. Use the arrows to select the Off Delay value (the duration time delay between the discrete input
de-activation and the configured response of the controller). Push ENTER.
11. Repeat steps 4–10 for each desired channel.
12. If a discrete input needs to be changed after initially set up:
a. Repeat steps 1–4 and an Input Settings menu appears with the following options:
• Control Logic
• Set Warning
• Output Mode
• On Delay
• Off Delay
b. Select the desired option and push ENTER.
Description
Selects the units for the calculated reading
Selects the parameter for the calculated reading
English 41