Marathon Computer UNIPRO V3.5 - Manual (Page 77)

MMI Product Documentation
Unipro 3.5 Process Control 1 Aug. 1997
D This is
DIRECT
operation for
alarm actuation
(i.e. the contact is
normally open
until it reaches the
trigger limit
specified in the
ALARM VALUE
then the contact
closes).
Notes: continued
Variable Description
R REVERSE operation (opposite of
NORMAL) for ALARM actuation (i.e. the
alarm contact is normally closed until it
reaches the trigger limit specified in the
ALARM VALUE then the contact opens).
IN B Alarm actuation is based on the
analog signal at Input B inputs exceeding the
limit in the Alarm Value. Input B inputs is
physically located at TBD-4, TBD-5, and
TBD-6 on the unit's rear connectors.
AUX Alarm actuation is based on the analog signal
at Input C exceeding the limit in the
ALARM VALUE. Input C is physically
located at TBD-7, TBD-8, and TBD-9 on
the unit's rear conductors.
BND Alarm actuation uses BAND WIDTH
control above and below a programmed
setpoint limit. (i.e. If the band is set by the
ALARM VALUE to 0.10 and the