West Control Solutions 8700+ - Manual (Page 141)

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Glossary 59305, Issue 7 – March 2014
Alarm Inhibit Type: General Parameter
Inhibits an alarm at power-up or when the controller Setpoint is switched, until that alarm
goes inactive. The alarm operates normally from that point onwards.
Also refer to Alarm Operation.
Annunciator Type: Limit Controller Definition
A special type of alarm output that is linked to a Limit Controllers main Limit Output. An
Annunciator output will activate when an Exceed condition occurs, and will remain active until
a reset instruction is received, or the Exceed condition has passed. Unlike the Limit Output,
an Annunciator can be reset even if the Exceed condition is present
Also refer to Exceed Condition, Latching Relay, Limit Controller, Limit Hysteresis and Limit
Setpoint
Automatic Reset (Integral) Type: Controller Tuning Parameter
Used to automatically bias the proportional output(s) to compensate for process load
variations. It is adjustable in the range 1 seconds to 99 minutes 59 seconds per repeat and
OFF (value greater than 99 minutes 59 seconds - display shows

). Decreasing the time
increases the Integral action. This parameter is not available if the primary output is set to
On-Off.
Display code =

, default value = five minutes and zero seconds (
 . 
).
Also refer to Primary Proportional Band, Secondary Proportional Band, Rate, PID, and
Tuning.
Auto Pre-Tune Type: Controller Tuning Parameter
Determines whether the Auto Pre-Tune feature is activated on power up (

= disabled,

= enabled). Auto Pre-Tune is useful when the process to be controlled varies
significantly each time it is run. Auto Pre-Tune ensures that tuning occurs at the start of the
process. Self-Tune may also be engaged to fine tune the controller.
Display code =

, default setting =
.
Also refer to Pre-Tune, Self-Tune and Tuning.
Auxiliary Input Type: General Definition
A secondary linear input option module. It can be used as a Remote Setpoint input or for
Valve Position Indication. Signals can be mA, mV, VDC or Potentiometer.
Also refer to Remote Setpoint, and Valve Position Indication.
Band Alarm 1 Value Type: General Parameter
This parameter is applicable only if Alarm 1 is selected to be a Band Alarm. It defines a band
of process variable values, centred on the current actual setpoint value. If the process
variable value is outside this band, the alarm will be active. This parameter may be adjusted
from 1 to full span from the setpoint.
Display code =

, default value = 5.
Also refer to Alarm Operation, Band Alarm 2 Value and Input Span.
Band Alarm 2 Value Type: General Parameter
This parameter, is similar to the Band Alarm 1 Value. It is applicable only if Alarm 2 is
selected to be a Band Alarm.
Display code =

, default value = 5.
Also refer to Alarm Operation, Band Alarm 1 Value and Input Span.