Page 209 - Gas Detection Systems Training Manual

By choosing one of the relay latch mode text boxes (low, mid, high or fault) touching the associated current value, the new value can be selected using the popup keypad. You may continue to change the other relay latch modes as long as you remain on this screen. If you wish to cancel the changes, simply press the “Alarm Levels” button to navigate back to the “Alarm Levels” Screen.
This setting changes the behavior of the SEC 3100 relays, as follows (for version 2.1.0095+);
1. Normal Mode- as an Alarm level is triggered, its relay is activated and remains activated until the Gas level drops below the Alarm trigger (threshold) level.
2. Latching Mode- as an Alarm Level is triggered, its relay is activated and remains activated regardless of the Gas Level until the relay latch is reset.
3. Audible Mode- as an Alarm Level is triggered, its relay is activated and remains activated until either the Gas Level drops below the Alarm threshold, or the user “Silences” the alarm. Once “silenced” it will not reactivate until the gas level has fallen below the Alarm threshold and again rises above the Alarm threshold.
For SEC 3100 versions < 2.1.0095, the screen appears as shown on the following page:
Sensor Electronics Corporation 5500 Lincoln Drive Minneapolis, Minnesota 55436 September 29th, 2006
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952-938-9486
SEC 3500 OI Supervisor Operator’s Manual Version 2.1.0095