6F8A0917

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%.

- 101 -

Page 102
Image 102
Toshiba L5232 manual Flow Rate High/Low limit Alarm, High/low limit alarm On/Off, High/low limit value, 101