GE Optica, Руководство оператора, Страница: 67 / 150

January 2006
4-8 Programming the VGA Optica
Alarms
For more information on using the alarms, see Alarm Outputs on
page 2-10.
The Upper and Lower limits set the alarm thresholds as described
below for each alarm type (see details on page 2-10):
•
SetPoint: alarm activates when parameter exceeds upper limit, and
deactivates when parameter is less than lower limit.
•
Inner Band: alarm activates when parameter is between upper and
lower limits.
•
Outer band: alarm activates when parameter is outside upper and
lower limits.
•
Control: alarm activates when Optica is actively controlling mirror
temperature.
•
Service: alarm activates when Service indicator is activated.
•
PACER: alarm activates when PACER balance is active.
Table 4-5: Alarm Options
Item Function Available Options
Alarm
Choose which alarm relay is being programmed. 1 and/or 2
Status Set whether or not the alarm is enabled. Enabled or Disabled
Parameter*
Set the parameter that can activate this alarm.
Humidity, Temperature,
Pressure or User Equation
Units*
Set the units for this parameter.
(See Table 4-1 on page 4-4
for parameter chosen.)
Type
Set the type of condition that will activate the alarm
SetPoint, Inner Band, Outer
Band, Control, Service, PACER
Upper* The upper side of the alarm band Enter a number.
Lower*
The lower side of the alarm band Enter a number.
* These fields ar ignored if the alarm is set to Control, Service, or PACER.