Toshiba Tohsiba Electromagnetic Flowmeter Converter L5232 - Manual (Page 102)

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8.2.17 Flow Rate High/Low limit Alarm
The flow rate high/low limit alarm is the function to generate an alarm when the instantaneous flow
rate exceeds a preset high limit value (or low limit value).
When an alarm is generated, an alarm message is displayed and a signal can be output through DO.
Two outputs are provided each for high limit value and low limit value (4 outputs in total of high limit,
high-high limit, low limit and low-low limit) and an alarm output can be sent out separately.
The following parameters can be set here:
(1) High limit alarm On/Off
(2) High limit value
(3) Low limit alarm On/Off
(4) Low limit value
(5) High-high limit alarm On/Off
(6) High-high limit value
(7) Low-low limit alarm value On/Off
(8) Low-low limit value
Note
• To output a high/low limit alarm through DO, it is necessary to set the DO function for output.
For how to set the DO function, see 8.2.14 “Digital I/O Function.”
High/low limit alarm On/Off
Whether the high/low limit alarm is used or not can be selected
Selection Alarm operation
1: ON Alarm function provided
If the flow rate exceeds a selected high limit value (or low limit value),
an alarm is generated.
2: OFF Alarm function not provided
The selected alarm will not be generated.
High/low limit value
A flow rate value (high/low limit value) to generate an alarm is set in percent of the maximum
range (Range 1) flow rate value.
The high/low limit alarm value can be set within the range of
−10% to 110% in increments of 0.5%.