Lenze EDS4900U-REG - Manual (Page 289)

Selection aid
14-1
48XX/49XXSHB0399
14 Selection aid
14.1 Assignment of controller and motor
Lenze does not only offer controllers but also a complete motor programme with
surface ventilated and enclosed ventilated machines. These motors perfectly
match the controllers 48XX/49XX.
On request, these motors can be equipped with the following:
( Gearbox
( Clutches/brakes
( Analog tachos
( Resolvers
( Incremental encoder
More information about installation, commissioning and maintenance of Lenze
DC motors can be obtained from the Operating Instructions ”DC motors”.
14.1.1 Selection criteria
The electrical rated data (armature current, armature voltage) of the controller
should be more or less the same as for the driving motor to ensure optimum
operating features of the whole drive (controller and motor, see chapter 3.3).
Since the motor provides overcurrent reserves from 12.5% to up to 80% over a
short period of time, the compensated drive motor generated a torque increased
by this factor when constantly excited.
For unadapted motors we distinguish between the following:
1. Rated armature voltage of the motor > rated armature voltage
of the controller
(= max. permissible controller output voltage).
The motor cannot be fully driven at this speed. The armature voltage is
proportional to the speed at constant excitation.
2. Rated armature voltage of the motor < rated aramture voltage of the
controller (= max. permissible controller output voltage)
The controller output voltage is to be limited to the motor voltage by
setting the parameters accordingly (C011 = n
max
). Check, whether the
motor can be used with this control mode (insulation, commutation
voltage). In general, this control mode is possible with deviations up to
approx. 20%.
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