Converter Failure Alarm - Toshiba LF620 Instruction Manual

10.8 Converter Failure Alarm

If any one of the following errors occurs in a self-diagnosis sequence, the converter issues an alarm
using a contact output.
●Self-diagnosis errors
ROM ERROR
RAM ERROR
PARAMETER
FAILURE
EXC CUR
OPEN
EXC CUR
ERROR
ADC ERROR
INVALID
TOTAL
Note: A self-diagnosis error message appears on the Display 2 measured value screen. If this
If you want to use a converter alarm output, set Digital Output 1 (DO1) or Digital Output 2
(DO2) for converter alarm output (CONV ALM) following 8.2.18, "Digital Output."
In addition, set the alarm output condition to normally open (NormOPEN) or normally
closed (NormCLOSE) status.
●Contact output condition
NormOpen;
NormClose;
Note: Alarm output contact is open when converter power is off.
Self-diagnosis errors (LCD display)
happens, the measurement item specified on the Display 2 screen cannot be displayed
unless the error is removed. However, if OFF is set to 8.2.25, "Self Diagnosis
Function Setting," an error does not appears even if an error occurs.
In case an error occurs, contact is closed.
In case an error occurs, contact is open.
− 128 −
Error items
ROM error
RAM error
System parameter error
Excitation circuit not connected or open
Excitation current error, excitation circuit error
ADC error
Invalid totalizer counts
6 F 8 A 0 9 2 7