Brooks Instrument SLA5800 Series - Manual (Page 40)

3-8
Brooks ® Digital MFC's & MFM's
Section 3 Operation
Installation and Operation Manual
X-TMF-SLA5800-MFC-eng
Part Number: 541B027AAG
April, 2013
Device type dependant function block are available representing the
different device functions:
·
Current Flow Value (Mass Flow device only)
· Current Pressure Value (Pressure device only)
· Current Device Temperature (Mass Flow device only)
· Current Valve position (Controller Only)
· Setpoint Control (Controller Only)
· Direct Valve Control (Controller Only)
· Actuator Override (Controller Only)
· Ultra-fast (8ms) PID function block for Cascade control (all devices)
3-6 Alarms and Warnings (Analog versions only)
This section outlines alarms and warnings associated with the Analog
versions of the Brooks Digital Series.
For information describing alarms and warnings for Brooks DeviceNet
TM
units, reference the Brooks DeviceNet TM Supplemental Manual.
3-6 -1 Alarms and Warnings (Analog versions only)
Connector Pin 3, on the 15 pin D-Connector provides an open collector
TTL output that will close depending on the alarm/warning situation and the
alarm settings.
Alarms and Warnings are a user configurable feature. This feature may be
adjusted via the Service Port using a special software application available
from Brooks. Reference the Brooks Service Suite User Manual for more
information about the Service Port and Service Tool software applications.
Each alarm has the following common user configurable traits:
Severity - The options are Off, Warning and Alarm. When set to Off, the
conditions are not monitored and no actions will be taken. When set to
Warning, the Alarm LED will flash Green when the monitored value
exceeds the specified conditions. (See Alarm Code attribute). When set to
Alarm, the Alarm LED will flash Red and the Analog Outputs will act based
on the assigned Output Alarm Behavior when the monitored value exceeds
the specified conditions.
Alarm Code - The alarm code specifies the code to be flashed on the LED
to indicate that an alarm/warning condition has occurred. When more than
one alarm/warning is active, then the LED will indicate the most severe
alarm with the highest Alarm Code. An Alarm is more severe than a
Warning. Alarm Codes do not have to be unique, i.e., more that one alarm/
warning type can use the same alarm code.