Despatch MIC1462 Controller Manual User Manual

Page 6

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1.2 Displays


Each instrument is provided with two main displays, a message display, and status
indicators as shown in Figure 1 -1. The upper main display shows the value of the
process variable. The lower main display shows the setpoint value. The message
display shows parameter tag names and mode list items during various modes of
operation.

1.3 Control


The instrument can be programmed for on-off, time proportioning, or current
proportioning control implementations depending on the model number. A second
control output is an available option. Proportional control implementations are provided
with fully programmable PID parameters. In addition, setpoint programming is available
to step the controller through ramp and soak segments.

1.4 Alarms


Alarm indication is standard on all instruments. Up to two alarm outputs are possible.
Alarm type may be set as Process Direct or Reverse (high or low), Deviation Direct or
Reverse (above or below setpoint), Deviation Band Type (closed or open within band),
or Loop Reverse or Direct. Alarm status is indicated by LED. An Alarm Inhibit is
provided to prevent, when activated, unwanted alarms during power-up.

1.5 Re-Transmission (Analog) Output


If the instrument is specified with this option, the process variable or setpoint value can
be scaled over any desired range and re-transmitted

1.6 Remote Inputs


The optional remote inputs allow for external selection of a profile; profile start; hold; or
reset; and for selection of profile timebase.

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