Hach sc200 User Manual page 33

Option
Frequency control
Warning
6. From the Relay Setup menu, select Set Transfer and choose Active or Inactive.
7. From the Relay Setup menu, select Fail Safe and choose Yes or No.
8. From the Relay Setup menu, select Activation.
The activation options for the selected function appear. Use the information in the table below
each function to update the options.
9. Test the relay function to make sure it is properly energizing the connected device. To do relay
testing, go to the Setting menu, then select Test/Maint>Test Relay.
• Scheduler Function (refer to
Option Description
Hold outputs Holds outputs in the present ON or OFF state
Run days Sets the weekday(s) that the relay operates. Options: Sunday, Monday, Tuesday.,
Wednesday, Thursday, Friday, Saturday
Start time Sets the start time.
Interval Sets the time between activation cycles (Default value: 5 min).
Duration Sets the period of time the relay is energized (Default value: 30 sec).
Off delay Sets the time for additional hold/output time after the relay has been turned off.
Figure 17 Scheduler function
1 Duration
2 OFF delay
• Alarm Function (refer to
Option Description
Low alarm Sets the value where the relay will turn on in response to decreasing measured value. For
example, if the low alarm is set for 1.0 and the measured value drops to 0.9, the relay
activates.
High alarm Sets the value where the relay will turn on in response to increasing measured value. For
example, if the high alarm is set for 1.0 and the measured value increases to 1.1, the relay
activates.
Description
Relay switches with a frequency depending on a process value
Relay indicates warning and error conditions in probes
Figure 17)
3 Interval
4 Time (x-axis)
Figure 18)
English 31