Monarch Instrument DC 2000 - Manual (Page 81)

Page 5-15
Chapter 5 Programming
5.6.5.9 Eng Unit
A maximum five-character alphanumeric engineering units message may be assigned for voltage and
current inputs to identify the point, e.g. PSI or mA.
Programming Engineering Units - Use the UP (
↑) or DOWN (↓) Arrow Keys to scroll through the menu
items in the Point Setup Menu to highlight “Eng units”. Press ENTER and the display reads “units ÎXXXXXÍ”.
Use the alphanumeric keypad to enter up to five characters for desired Engineering Units then press
ENTER to return to the Point Setup Menu.
5.6.5.10 Alarms
A total of five alarms can be set for each point programmed. These alarms can be any mixture of the
following alarm types:
None no alarm set
High set high alarms (up to five). Alarm will occur if input is greater than the Alarm set point.
Low set low alarms (up to five). Alarm will occurs if input is less than the Alarm set point.
Rate set rate alarms (up to five). Alarm will occur if the input changes by more than the set
point value in the specified time.
Abnormal set alarms for abnormal conditions (TCBO, Overflow, invalid etc.)
In the case of Linear Dry Contact Inputs the choice is:
None no alarm set
Open set Alarm on open contact
Close set Alarm on closed contact
In the case of Conditional Inputs the choice is:
None no alarm set
True set Alarm if condition is true as defined
False set Alarm if condition is false as defined
If you try to program an alarm with an illegal condition, for example, setting a Linear Voltage input alarm to
“type=close”, you will get an ILLOGICAL error.
Alarms programming also allows the user to program an Alarm Deadband and Alarm Delay for each alarm
set. The Alarm Deadband is the hysteresis.
Programming Parameters - Alarms programming requires setting parameters for:
Alarm Limits
Alarm Deadband
Alarm Delay
5.6.5.10.1 Alarm Limits
Five alarms can be set for each point programmed. These five alarms can be any combination of
Alarm Types except Open, Closed, True, and False, for any input other than Linear Dry Contact or
Conditional point types. Open and Closed and Abnormal Alarm Types are used for Linear - Dry Contacts
only, and True, False and abnormal Alarm Types are used for Conditional Point Types only. Actual
Alarm values are entered in the same Engineering Units to which the point is programmed.