Omega RD8800 User Manual page 78

Chapter 5 Programming
c. Low Alarm Type
Low Alarms become active when the input is lower than the set point.
To set the Alarm Type as Low:
Use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button to highlight Type=low and press the ENTER button. You will
be prompted with "low XX.XX ". Use the numeric keypad to enter the Low Alarm value and press
the ENTER button. You will be prompted with "contact #? X". This is the contact output that will
respond to this alarm provided the relay option is fitted. If no contact output is required, select
contact # 0. Use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button to select the desired contact number (0 to 6) and
press the ENTER button. The display will return to the Alarm Type menu. Press the EXIT button
to return to the Alarms Setup menu.
d. Rate Alarm Type
Rate Alarms become active when the input changes more than the set amount within the set time
frame. In other words, the rate of change of the input exceeds the set point. The Rate Alarm
requires the user to enter a value and a time.
To set the Alarm Type to Rate:
Use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button to highlight Type=rate and press the ENTER button. You will
be prompted with "rate XX.XX ". This is the value of change per time. Use the numeric keypad
to enter the Rate Alarm value and press the ENTER button. You will be prompted with "seconds XX "
where XX is 1 by default for a new alarm. Use the numeric keypad to enter the time period for
evaluating the rate change, up to a maximum of 600 seconds (ten minutes), and press the ENTER
button. You will be prompted with "contact #? X". This is the contact output that will respond to this
alarm provided the relay option is fitted. If no contact output is required, select contact # 0. Use the
UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button to select the desired contact number (0 to 6) and press the ENTER
button. The display will return to the Alarm Type menu. Press the EXIT button to return to the
Alarms Setup menu.
e. Abnormal Alarm Type
An Abnormal Alarm is a condition that exceeds any of the bounds of normal operation. This
includes overflow and underflow errors, invalid data and TCBO (ThermoCouple Burn Out).
To set an Abnormal Alarm:
Use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button to highlight Type=abnorm and press the ENTER button. You
will be prompted with "contact #? X". This is the contact output that will respond to this alarm provided
the relay option is fitted. If no contact output is required, select contact # 0. Use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN
(↓ ↓ ↓ ↓ ↓ ) button to select the desired contact number (0 to 6) and press the ENTER button. The display will
return to the Alarm Type menu. Press the EXIT button to return to the Alarms Setup menu.
f. Open or Closed Alarm Types
NOTE: Open and Close Alarm Types are available for the Linear, Dry Contact Point type ONLY.
Open and Closed Alarms become active when an input is Open or Closed respectively. No set
point is required.
To set an Open or Closed Alarm Type:
Use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button to highlight Type=open or Type=closed as desired and
press the ENTER button. You will be prompted with "contact #? X". This is the contact output that
will respond to this alarm provided the relay option is fitted. If no contact output is required, select
contact # 0. Use the UP (↑ ↑ ↑ ↑ ↑ ) or DOWN (↓ ↓ ↓ ↓ ↓ ) button to select the desired contact number (0 to 6) and
press the ENTER button. The display will return to the Alarm Type menu. Press the EXIT button
to return to the Alarms Setup menu.
Page 5-16
Artisan Scientific - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisan-scientific.com