Glossary - JUMO 202550 Operating Instructions Manual

Term Parameter Explanation
Actuator time tt
Alarm contact
Alarm delay AL2
Alarm tolerance AL1
Parameters which apply to both output K1 and K2 (e.g. tAb1 or
tAb2) are only explained once.
The value for this parameter must be taken from the specific
data for the actuator device (e.g. an motorized valve).
With limit control, the active time of the outputs K1 or K2 can be
monitored (dosing monitoring). If the active time exceeds an
adjustable value (Alarm delay AL2), then the alarm contact is
activated.
With pulse width or pulse frequency control, the size of the
control deviation is monitored. If the control deviation exceeds
the adjustable Alarm tolerance AL1, and remains outside this
tolerance for longer than the Alarm delay AL2, then the alarm
contact is activated.
If the control deviation exceeds the adjustable Alarm tolerance
AL1, and remains outside this tolerance for longer than the
adjustable Alarm delay AL2, then the alarm contact is activated.
If the process value goes above or below the value of setpoint
plus/minus alarm tolerance (x > SPr..+AL1 or x < SPr..-AL1) and
remains outside these limits for longer than the Alarm delay,
then the alarm contact is activated.
The alarm tolerance is only active if pulse width or pulse
frequency control has been configured,
Chapter 26.4 "Controller options - C211", page 76.
If limit control is configured, then the values for the
alarm tolerance will be ignored.

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