Self Diagnosis And Alarms; Self-Diagnosis - Toshiba LF620 Instruction Manual

12. Self Diagnosis and Alarms

12.1 Self-Diagnosis

The converter has a self-diagnosis function to detect errors, such as setting error, I/O error or converter
hardware failure, and shows the resulting error or alarm messages on Display 2 of the screen or on the
hand-held terminal (HHT) through communications.
The diagnosis messages and their corrective actions are described below.
●Setting error
If you try to set a value or a measuring unit outside of the specified range in the setting mode,
one of the following error messages appears to prevent erroneous setting.
LCD display
HIGH OVER
SPEC
LOW OVER
SPEC
HIGH OVER
CNT RATE
LOW OVER
CNT RATE
MULTI RNG
ERROR
Description
Setting value exceeds the allowable high limit.
Setting value goes below the allowable low limit.
Count rate exceeds the allowable high limit.
Count rate goes below the allowable low limit.
Span is not appropriate for multi-range configuration.
− 137 −
6 F 8 A 0 9 2 7
Corrective action
Try to set a value within the
specified range.
Try to set the span as specified.