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Alarm Messages and
Troubleshooting
TrueBlend
™
112
Edition: February 2007
Alarm Message
Possible Cause
Solution
OK:
Batch is stopped after confir-
mation and unit is stopped.
Alarm message is sent.
•
Tare wrong
-
The range that can
normally be com-
pensated is -50 to
100 g. If the tare
value is outside this
range it will alarm
When the unit starts a new
batch check the operation of
the weigh bin.
•
Make sure the bin is
empty.
•
Perform a zero calibra-
tion.
•
Make sure the material
sensor is adjusted cor-
rectly (see Section 9.6).
Alarm message "Tare wrong"
Meaning of alarm
Correction
•
The weigh bin is still full of material.
•
The weigh bin is mechanically jammed.
•
The plunger was not correctly installed and is
pressed into the weigh bin.
•
"No slave" error occurred first, therefore the scale
value remains at the last valid value.
•
The operating air pressure is too low –-> weigh bin
closes too slowly.
•
Choke check valve for closing the weigh bin is in-
correctly adjusted –-> weigh bin closes too slowly.
Î
Check why material is not
discharged (cone, weigh
bin).
Î
Check CAN connection
(see No slave).
Î
Check operating pressure
and if necessary adjust
(min. 6 bar).
Î
Adjust choke check valve
correctly.
Summary of Contents for TrueBlend TB500-4
Page 2: ......
Page 138: ...Appendix TrueBlend 136 Edition February 2007 11 1 2 Menu overview dosing unit...
Page 139: ...TrueBlend Appendix Edition February 2007 137 11 1 3 Menu overview conveying Optional...
Page 140: ...Appendix TrueBlend 138 Edition February 2007 11 1 4 System settings menu...
Page 141: ...TrueBlend Appendix Edition February 2007 139 11 1 5 Unit settings menu...
Page 142: ...Appendix TrueBlend 140 Edition February 2007 11 1 6 Conveyor settings menu...