Hardy Process Solutions HI 2160RC PLUS Operation And Installation Manual page 13

PLUS
HI 2160RC MANUAL
NOTE:
®
WAVERSAVER
ALARMS
1-2
up or slow down the driver of the feeding device thereby achieving the
desired flow rate. The user simply enters the flow parameters via the
key touch pad (See Fig. 1-1) or standard bi-directional serial port or
optional Interface and the HI 2160RC
matically calculates and adjusts the tuning parameters thereby main-
taining the desired flow rate. The analog to digital converter in the rate
controller is capable of greater than 1,000,000 counts of resolution,
detecting the smallest fluctuations in rate of flow.
Manual adjustment of the tuning parameters is typically not necessary, but can be
done.
Typically, mechanical noise (from the feeders and plant environment)
is always present and much larger when compared with the detection
and control of small changes in weight. The HI 2160RC
®
with WAVERSAVER
present in all material flow applications. WAVERSAVER
rate controller to decipher actual weight data from mechanical noise
and blocks the mechanical noise transmitted from the load cell.
LUS
The HI 2160RC is fitted with two alarms to detect exceptions to the
desired flow rate. The Rate Tolerance Alarm is configured to monitor
a tight guard band around the desired flow rate. The guard band is user
selectable. The alarm is triggered when the desired flow rate exceeds
the selected guard band tolerance for a selected period of time. The
Rate Tolerance alarm is connected to a relay which can activate a visual
or sound alarm. This alarm is used for small changes in the desired flow
rates. The Rate Exception Control (REC) Alarm uses a broader
guard band tolerance then the Rate Tolerance Alarm. The alarm is trig-
gered by an out of tolerance flow rate. The controller in REC Alarm
state continues to control the flow rate while trying to bring the excep-
tional flow rate into tolerance. The REC is a user selectable alarm
which can display an "REC" at the bottom left corner of the controller
display and/or shut down the feeder system.
PLUS rate control algorithm auto-
technology which ignores mechanical noise
PLUS
is fitted
®
enables the