Nicotra Gebhardt DDMP 10/10, Руководство по эксплуатации

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Rev. 0 - 05/11/2020
OPERATING MANUAL OPERATING MANUAL
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11. OTHER FEATURES
This feature is useful when the speed of the fan is not directly set by the user as fans set in Constant Airflow Asynchronous Emu -
lation or PID mode.
The alarm is active when a speed threshold is overtaken (5V or 10V depending on the fan model).
11.1 Filter alarm
To activate this feature, the Holding Register 46 must be set at value 2 and the required Speed Threshold value must be set into
the Holding Register 55 . The digital output of the driver changes its status (see above figure).
The digital output of the driver is high when the low limit of the speed threshold is overtaken, and it returns low when the high
limit of the speed threshold is overtaken.
11.2 Out of functioning range alarm (for 1-phase - 1.05 kW only)
To activate this feature, the Holding Register 46 must be set at value 3 and the low value of the Speed Threshold must be set into
the Holding Register 16 .
While the high value of the Speed Threshold must be set into the Holding Register 55 . The digital output of the driver changes
its status following the behavior of the above figure (a hysteresis of 50 rpm is present to avoid several output changes of status).
The algorithm can catch the position of the rotor after changing the target speed to 0 and to a new value in short time. If too long
time passed and the fan runs at very low speed, it is not possible to catch the speed: the fan brakes and restarts.
11.3 Flying start (for 3-phase only)
The algorithm can catch the position of the rotor after powering OFF and then ON the fan. If too long time passed and the fan runs
at very low speed it is not possible to catch the speed and the fan brakes and restarts.
11.4 Regeneration (for 3-phase only)