Digital Multiplexer
Chapter 7. Occurrence and handling of alarm, loss, motion
1. Alarm occurrence conditions
The following events occur if alarm occurs since the sensor is connected to the alarm input terminal on the backside:
1)Warning sounds (if buzzer turns “ON”).
2)Alarm information (date and time when alarm occurs) is recorded on the alarm list.
3)“RESET” LED blinks.
4)The alarm output (HOT, COLD) signal is active for the alarm hold time.
5)The record times of the channel that alarm occurs increase.
6)Display character of “ALARM” or “A” appears (if the alarm information turns “ON”).
7)Alarm continues for the alarm hold time that is set in the program mode.
✴ Alarm holds time: Time performing alarm operation after recognizing alarm.
2.Alarm release
The alarm status is released if pressing the “RESET” button when alarm occurs or the alarm holds time set- ting passes.
3. Alarm record
Perform the alarm weight value record in the chapter 6.
4. Alarm signal standard
You can view record output when alarm occurs during record.
For example, if record status have the following conditions:
•Currently perform record in the TLV mode on the time lapse VCR.
•Set the “REC TYPE” to “NOR” in the “5. ALARM SET” of the “program mode”.
The record output until release after the alarm occurs is as follows:
VCR TRIG
Record output operation
ALARM/MOTION OUT Output
ALARM RESET
Output
TRIG override
TLV operation | NOR operation |
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More than 150ms
Alarm occurrence | Alarm reset |