Checking The Motors For Suitability - Berker Standard RolloTec Mode D'emploi

GB

4. Checking the motors for suitability

Often, it is not known whether the motor installed is equipped with mechanical
or electronic limit switches.
Carry out the following measurement using a voltmeter:
• Measure the actual mains voltage U
• Go to the measured mains voltage on the left side of the diagram opposite.
• Draw a straight line from the value found through the center M to the
• Measure the motor voltage U
28
Therefore: Check the motor first for suitability.
Some motors with mechanical limit switches tend to build up a
high motor voltage in operation which may irreparably damage the
RolloTec ® 'Standard' insert without neutral conductor. Checking is
therefore effected with a commercial mechanical shutter switch
(possibly still installed) and not with the 'Standard' insert without
neutral conductor.
.
N
righthand axis. The intersection of the line and the right axis is the maximum
permissible motor voltage U .
M
in the UP and DOWN direction on the
M
installed mechanical shutter switch. The maximum value as determined
above must not be exceeded when the measurements are made.
GB
Example
Example:
The measured mains voltage U
the left through the center of the diagram (M) to the right side with motor
voltage U . The the maximum permissible motor voltage in this case is 404 V.
M
The voltages measured for the UP and DOWN directions must therefore be
below 404 V.
Approximate values for typical maximum motor voltages U
U max. U
n m
the mains voltage U
207 V 380 V
215 V 393 V
220 V 403 V
225 V 412 V
230 V 420 V
235 V 429 V
240 V 438 V
245 V 447 V
253 V 460 V
is 221 V. Draw a straight line from 221 V on
N
as a function of
M
are set out in the table opposite.
N
29