Table of Contents
Advertisement
ManDown Sensor
4.3. Detection mode
Detection by the ManDown Sensor can be decomposed into two periods of time.
1) Tilt Detection
When the sensor detects a tilt of more than 60 degrees, it will start its internal chronometer
for approximately ten seconds.
If the sensor comes back to a vertical position within these ten seconds, the chronometer is
reset.
2) Pre-Alarm
If the sensor does not come back to a vertical position within ten seconds, a pre-alarm starts
accompanied by a beeping sound. This period of time is factory-set and lasts approximately
thirty seconds. The pre-alarm is cancelled if the sensor comes back to a vertical position or
if the help call button is pressed.
This pre-alarm may be suppressed by making a solder bridge. See Fig.2. Interior view of a
ManDown Sensor.
4.4. Repeating the alarm
After a fall, as long as the sensor detects a horizontal position, the alarm will repeat itself
after an average period of time of two minutes and thirty seconds.
4.5. Deactivating the help call button and the pre-alarm
Making a solder bridge allows to deactivate the help call button or to suppress the pre-alarm.
In this case, during the automatic tilt alarm, the sensor remains silent. During all help calls
made by pressing the button, the sensor will always issue a beeping sound.
Fig. 2. Interior view of a ManDown Sensor
User Manual
953.64c
Bosch Security Systems
No bridge: with pre-alarm
Bridged: without pre-alarm
No bridge: help call button activated
Bridged: help call button deactivated
Page 7
Advertisement
Table of Contents
