Moore Industries SPA2 - Rate of Change Alarm Configuration

www.miinet.com Moore Industries-International, Inc.
- 50 -
User’s Manual
224-790-00K
May 2018
Programmable Limit Alarm Trips
SPA
2
SECTION 4
Rate of Change Alarm Configuration
Figure 4.16. gives an overview of the Rate of Change Alarm configuration menu.
If you wish to be notified when deviations outside of ranges you have set occur, use the Rate of
Change Alarm. The alarm will be set according to the rate of change of the process variable over a
set time period.
1. At the “CONFG ALARM” menu, press SELECT. Use the UP and DOWN buttons to toggle
between the alarms. When the desired alarm appears, press SELECT.
2. At the “ALARM TYPE” menu, press SELECT. From here you will choose your alarm type.
Use the UP and DOWN buttons to scroll through the selections. Press SELECT once
“ALARM ROC” is displayed.
3. At “TRIGR TYPE” press SELECT and use the UP and DOWN buttons to set your trigger type
either Fall, Rise, or Both. Press SELECT.
Rise – This setting triggers alarm when value rises at a rate that exceeds the set limits.
Fall – This setting triggers alarm when value falls at a rate that exceeds the set limits.
Both – This setting triggers alarm when value either rises or falls at a rate that exceeds the
set limits.
4. At “ENTER DELTA” press SELECT and use the UP and DOWN buttons to set your delta
value. Press SELECT.
DELTA– This is the amount by which the process variable must change.
5. At the “ENTER TIME” menu, press SELECT. Using the UP and DOWN buttons, set the time
and press SELECT.
TIME– The span (1-60sec) in which the delta must change before the alarm is set.
Note: To set the correct value for DELTA and TIME, you need to understand the input signal noise
and input averaging filter settings to prevent false trips.
Note: When configuring a Rate of Change alarm, “LATCH ON” must be selected in the “SET
LATCH’” menu.
6. At the “SET LATCH” display, press SELECT and choose “LATCH ON” using the UP and
DOWN buttons; press SELECT.
Refer to the “Trip Alarm Configuration” section for a description of latching alarms.
7. Press SELECT at “SET FSAFE” to enter the menu. Then use the UP and DOWN buttons to
switch from “ALARM FSAFE” to “ALARM NONFS”. Make your selection and press SELECT.
Refer to the “Trip Alarm Configuration” section for a description of fail safe and non fail safe
alarms.
8. “INPUT FAULT” appears. Select whether or not to enable the input failure alarm by using the
UP and DOWN buttons; press SELECT.
INPUT FAULT Alarm– If enabled, this alarm will notify the user upon a breakdown of input.
9. “RANGE ALARM” appears. Select whether or not to enable the range alarm by using the UP
and DOWN buttons; press SELECT. If enabled “LOWER POINT” appears, then use the UP
and DOWN buttons to set your lower point value, press SELECT. “UPPER POINT” appears,
then use the UP and DOWN buttons to set your upper point value, press SELECT. “EXIT
RANGE” appears. Press SELECT. “EXIT ALRM*” appears. If range alarm not enabled “EXIT
ALRM*” appears.