Operating instructions

Rexroth IndraDrive Introducing the Products 1-17
DOK-INDRV*-FU*********-IB01-EN-P
Requirements on the Encoder of the Third-Party Motor
Motor Encoder of Asynchronous Third-Party Motor
Asynchronous motors can also be controlled by IndraDrive controllers in
"open-loop" operation (without motor encoder). In "closed-loop" operation
(with motor encoder) a relative measuring system is sufficient for
asynchronous motors.
Motor Encoder of Synchronous Third-Party Motor
For fail-safe drives with synchronous third-party motors at IndraDrive
controllers the following possible combinations or restrictions have to be
taken into account when selecting the measuring system:
Drive range Motor measuring system Synchronous third-
party motor
absolute +
IndraDrive
relative o
+ … advantageous combination
o … Combination is possible (restrictions specific to application),
commissioning may be more complicated!
Fig. 1-14: Possible combinations of synchronous third-party motor and motor
measuring system
Note: The control section integrated in the controller can evaluate
measuring systems as a motor encoder if they are contained
in P-0-0074, Encoder type 1 (motor encoder) (see also
Project Planning Manual of the IndraDrive control sections).
For information on absolute and relative measuring systems
see section "Measuring Systems" of Functional Description of
firmware!
Notes on Selection and Commissioning
Selecting the Controller as Regards Continuous Current
The controller required for the respective motor and the supply unit are
determined by comparing the motor data to the data of these devices (see
documentation for HMS/HMD and HMV or HCS).
Note: The continuous current of the controller should be greater than
that of the motor, the continuous power of the supply must be
greater than the sum of all average powers of the axes of the
drive system!
Selecting the Connection Technique
The available power and encoder cables are described in the
documentation "Connection Cables; Selection Data" (DOK-CONNEC-
CABLE*STAND-AU...).
Notes on Commissioning
Note: For further information, notes on commissioning and
supporting documents (e.g. forms for entering the required
data) see Functional Description of firmware.