Sterlco SGBD Series Batch Gravimetric Blenders - Manual (Page 61)

BLN1-600 Chapter 4: Operation 61 of 110
hopper and can be corrected by simply cleaning out the weigh hopper. If this does not correct
the problem, then the scale calibration should be checked by maintenance.
Figure 43: Typical “Calibration Error” Alarm Screen
Power Interruption while metering a Batch: This alarm indicates that the blender’s power
was turned off while the blender was making a batch. The batch accuracy is not affected as
long as the blender is configured for “AutoStart.” The blender will finish the last batch
accurately even if the material was dumped into the mixer when the power was turned off.
Figure 44: Typical “Power Interruption” Alarm Screen
PLC Battery Low: PLC battery is low and may cause the blender to lose both the program
and the blender configuration. Notify Maintenance immediately.
Figure 45: Typical “PLC Battery Low” Alarm Screen
PLC Module Loaded: This alarm occurs after a software upgrade to the PLC. The alarm
instructs you to turn off power to the blender, remove the Memory Module, turn on power,
and then reconfigure the blender parameters.
Figure 46: Typical “PLC Module Loaded” Alarm Screen
Blender Powered On/Off: These are only logged in the Alarm Log and does not cause a
pop-up message or audible alarm. Each time the blender is powered on or off, the time and
day is logged to the Alarm Log.
CALIBRATION
ERROR
POWER
INTERRUPTION
While metering a
Batch
PLC BATTERY LOW
PLC MODULE
LOADED