Creative DE5621 Manuale delle Istruzioni Scaricare il pdf (Pagina 20)

accQcomm Interface Module

Section 2 Installation and Operation

2-8

2.4 Alarms The accQcomm has eight programmable relays for triggering

alarms based on one or two user-defined conditions (i.e., flow

rate, level, velocity, etc.). To program alarms, click the Alarms

tab.

Define the conditions by using the pull-down menus to select the

instrument (flow meter), parameter (level, flow, etc.), comparator

(>, <, ==, >=,<=), and value (Figure 2-7). For a list of all available

alarm parameters, and their definitions, see Table 2-2.

To use two conditions to activate an alarm, use the pull-down

menu between Condition 1 and Condition 2 to select AND or OR.

To use only Condition 1, select N/A.

To set an alarm to remain activated regardless of changes in

data, check the “Latching when triggered” box. To clear an alarm,

select the alarm and click the Clear Selected button.

In the example in Figure 2-7, an alarm will be permanently trig-

gered if the flow reverses.

Figure 2-7 Alarms tab

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Creative DE5621 Manuale delle Istruzioni Pagina 20