Toshiba Tohsiba Electromagnetic Flowmeter Converter L5232 - Manual (Page 149)

6F8A0917
- 148 -
10.9 Converter Error Alarm Output
If one or more of the following errors occur in a self-diagnosis sequence, an alarm signal will be
output using contact signals.
List of Alarm Output Factors
Diagnosis error alarm output (DO)
Diagnosis error item
WITHOUT EMP WITH EMP
RAM error
ROM error
Exciting current value error
Exciting current wire broken
ADC error (error of flow measurement circuit)
Parameter error
Fluid empty alarm −
○ : If an error is detected, DO diagnosis error alarm is output.
− : Even if an error is detected, DO diagnosis error alarm will not be output.
(Alarm message is displayed)
Self-Diagnosis Function Setting
• Follow the procedure in 8.2.19 “Self-Diagnosis Function” and set whether the
self-diagnosis function is On or Off and set the alarm output factors.
For alarm output factors, set whether the fluid empty alarm should be included
(WITH EMP) or not included (WITHOUT EMP) for alarm output.
DO Setting
To use the converter error alarm output, follow the procedure in 8.2.14 “Digital
I/O Function” and set the Digital Output (DO) for converter error alarm output.
In addition, for alarm output state, select Normally Open or Normally Closed.
If the self-diagnosis function only is used and external contact output is not used,
DO setting is not needed.
• Contact output operation
NORMAL OPEN : If an error occurs, contact closes
NORMAL CLOSE : If an error occurs, contact opens
Note: When power supply is turned off, the contact is OFF (contact opens).