Sterlco SGBD Series Batch Gravimetric Blenders - Manual (Page 105)

BLN1-600A Chapter 7: Appendix 105 of 116
Advanced Alarm Options
OUT OF MATERIAL RETRY LIMIT FOR ALARM: the number of retries before an out of
material alarm is given. The blender also uses the gain in weight to determine this, but in the
case where the weight change wasn’t enough this is used to catch the Out of Material
condition. Low Level prox switches can also be used to give the earliest indication.
SURGE EMPTY DELAY: the number of seconds before triggering a Surge Hopper Empty
Alarm. This is an optional feature and doesn’t necessarily represent the blender’s surge
hopper. Typically this can be used to indicate the take off box below the blender is empty.
UNABLE TO MAKE RATE DELAY: if the high level prox hasn’t been covered after this
amount of time then an alarm is given indicating that the blender cannot keep up.
OVERFEED BATCH DELAY: the number of batches allowed upon starting the blender
before examining for an overfeed condition.
OVERFEED COUNT LIMIT: the number of overfeeds that must occur before an alarm.
RUN/STOP ON ALARM BUTTONS: determines if the blender should continue running or
should stop when these alarms occur. If the blender is stopped due to an alarm condition then
the alarm will stay active until the operator silences it.
IO Options
This page is used to configure optional alarm inputs. The options are HOP6 low level or
Mixer instant close feature (used with metal separator). HOP7 low level or Surge Hopper
Empty Feature (used to detect a low level anywhere). HOP8 low level or Mixer Failure Prox
(used to detect a mixer that has stopped turning).