ControlMaster CM15 and CMF160
Universal process indicator
1
/8 DIN 7 Advanced Level
IM/CM/I–EN Rev. P 53
…Process Alarm / … Alarm 1 (8)
Hysteresis Hysteresis trip level in engineering units. Activated at the alarm trip level but deactivated only
when the process variable has moved into the safe region by an amount equal to the hysteresis
value – see Process Alarm examples on page 51.
Time Hysteresis If an alarm trip value is exceeded, the alarm does not become active until the Time Hysteresis
value has expired. If the signal goes out of the alarm condition before the Time Hysteresis has
expired, the hysteresis timer is reset.
Display Enable Enables an alarm to be used for control purposes without it appearing as an active alarm state in
the Operator level or Diagnostic view.
Acknowledge
Source
The source required to acknowledge all active alarms.
Acknowledge occurs on rising edge of the digital signal – see
Appendix A.1, page 94 for description of sources.
Enable Source The source required to enable alarms. If the source is None, alarms are always enabled –see
Appendix A, page 94 for description of sources.
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