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.
