Prewarning Und Warning - MDT AMI series Technical Manual

Technical Manual Switch Actuators AMI/AMS
4.5.3 Prewarning und Warning
The following illustration shows the setting options at the ETS‐Software:
Figure 21: Warning timer & prewarning time
The warning function can be activated by adjusting the parameter "Prewarning" as active. Now, you
can adjust warning time and prewarning time.
The warning function is for warning that the staircase time ran almost out and the lights are switched
off soon. This warning happens trough a short turn off the lights. The duration of the turn off is
indicated by the warning time. A value of 1‐3s is advisable for this parameter. When the warning
time runs out, the lights will be switched on again for the adjusted prewarning time. Now you have
the opportunities to extend the staircase time, when this parameter was activated, or leave the
staircase. A dynamic programming is advisable for this time. So you can adapt this time to spatial
conditions (next switch, length of the staircase, etc.).
The whole duration of the switching process is the sum of the 3 times. The following diagram shall
make this clear:
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