Watlow CAS200 - Manual (Page 76)

Chapter 4: Setup CAS200 User’s Guide
64 Watlow Anafaze
Alarm Deadband
This menu lets you set an alarm deadband. This deadband
value applies to the high process, low process, high
deviation, and low deviation alarms for the channel you are
editing.
The alarm deadband sets the hysteresis of the alarm action
which is used to avoid intermittent alarms as the PV
returns to a normal state.
Selectable values: 0 to 255, 25.5, 2.55, .255, or .0255,
depending on your input menu setup.
Alarm Delay
This menu sets a channel alarm delay. There are two types
of alarm delay: the startup alarm delay and channel alarm
delay. Startup alarm delay (which you can set in the Setup
Global Parameters main menu) delays process alarms
(but not failed sensor alarms) for all channels for a specified
time after the CAS200 powers up.
The channel alarm delay, in contrast, is set separately for
each channel. It delays failed sensor and process alarms
until the alarm condition has been continuously present for
longer than the alarm delay time. (Failed sensor alarms are
not subject to the startup alarm delay, but they are affected
by the channel's alarm delay during the startup alarm
delay period.)
Selectable values: 0 to 255 seconds
CHANNEL PROCESS UNITS
CHANNEL NAME ALARM STATUS
01 ALARM DEAD
BAND ? 2˚ C
CHANNEL PROCESS UNITS
CHANNEL NAME ALARM STATUS
01 ALARM DELAY ?
0 SECONDS