Toshiba Tohsiba Electromagnetic Flowmeter Converter L5232 - Manual (Page 142)

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10.5 Fluid Empty Alarm Output
Proceed as follows to use the fluid empty alarm.
(Note: In the case of LF232*F; Fluid empty alarm function is not usable. Set this function 'OFF'.)
Alarm Output Setting
• Follow the procedure in 8.2.18 “Fluid Empty Alarm” and set the fluid alarm setting
to ON (NORMAL, SENTITIVE or SENSITIVE-H).
DO Setting
• Follow the procedure in 8.2.14 “Digital I/O Function” and set the Digital Output
(DO) for fluid empty alarm output.
In addition, for alarm output state, select Normally Open or Normally Closed.
If only the fluid empty detection function is used and external contact output is not
used, DO setting is not needed.
Output when an alarm is generated
• 4 to 20mA output: 4mA (standard)
* Current output value when an alarm is generated can be set by
referring to 8.2.11 “Current Output Setting Used When an Alarm
Occurs.”
• Totalizer, pulse output: Totalizing operation and pulse output stopped
• Measured value display: Instantaneous flow rate is zero.
• Contact output:
When an alarm occurs, output contact closes (standard).
* Contact operation when an alarm occurs can be set according to the
alarm output state described in 8.2.14 “Digital I/O Function”
Note: When the power supply of the converter is turned off, the contact is open.
* For how to use the fluid empty alarm, see Precautionary notes in 12. “Diagnosis and Alarms.”