1756sc-IF8U Alarm Configuration

Use this tab to configure the Spectrum Controls 1756sc-IF8U analog module channel alarms.

On this tab, you can:

select the channel you want to configure

enter process alarms

choose to enable all alarms

choose to latch process alarms

enable the latch rate alarm

enter a deadband value

enter rate alarms

Tip
: The module’s configuration information is stored in the controller and the controller configures the module.

Note
: The 1756sc-IF8u Owner’s Guide, which is available online by following the hyperlink on the Vendor tab, provides additional configuration information for some of the parameters discussed in this help file.

Channel

Click one of the channel buttons to display its information on this tab.

Enable All Alarms checkbox

Check this box to enable all alarms for a channel.

Latch Process Alarms checkbox

Check this box to maintain an alarm triggered condition for all of the process alarms (low, low low, high, high high) even after the condition ceases. The alarm will only unlatch with an explicit message acknowledging the alarm (unlatch service).

Latch Rate Alarm checkbox

When you enable this alarm, a Rate Alarm indication will remain set even when the alarm condition goes away. This latch allows you to maintain the alarm even after the condition ceases. The alarm will only unlatch with an explicit message acknowledging the alarm (unlatch service).

Process Alarms

Note
: Process Alarms are set in engineering units.

High High Alarm

Set the level of input to a channel that will cause the module to set the High High alarm. The alarm will remain until the input returns below this level, unless it is within the deadband, or as long as the alarm is latched.

High Alarm

Set the level of input to a channel that will cause the module to trigger the High alarm. The alarm will remain until the input returns below this level, unless it is within the deadband, or as long as the alarm is latched.

Low Alarm

Set the level of input on a channel that will cause the module to enable the low alarm. The alarm will remain until the input returns above this level, unless it is within the deadband, or as long as the alarm is latched.

Low Low Alarm

Set the level of input to a channel that will cause the module to indicate a low low alarm. The alarm remains until input returns above this level, unless it is within the deadband, or as long as the alarm is latched.

Rate Alarm

Enter an alarm value, in native units per second, to trigger when the rate of change between input samples exceeds the setpoint.

Alarm Deadband

Enter a value, in engineering units, where an alarm, once set, will not disable as long as the input value remains within the deadband range of the alarm trigger point. (This value in combination with the process alarms creates the range.)

Click this button to accept your edits on any tab and close the dialog.

Cancel

Click this button to cancel your edits on any tab and close the dialog.

Apply

Click this button to apply your edits on any tab and continue editing.

If:

you are online in Program, Remote Program or Remote Run mode and,

this controller is the owner controller and,

you have changed the module’s configuration in the software, when you click the Apply or the OK button, the information is automatically sent to the controller. The controller tries to send the information to the module (if the module’s connection is not inhibited). If you don’t click Apply, your changes are not sent to the controller.

Help

Click this button for help on this tab.