8 System information ZETADYN 1DV
1.3
Requirements
Ziehl-Abegg provides you with an optimally tuned D.C. drive with asynchronous motor, digital speed
transmitter and controller
ZETADYN 1DV
.
If you only purchase the controller - for example when retrofitting an old installation - please observe the
following.
Motorselection:
Suitable devices are all pole-changing elevator
motors having a pole ratio of 4/16.
Pole pair ratios of 4/24 and 6/24 are partly
suitable. For these motors, the course of the
characteristic line for the d.c. injection brake
(low-speed winding) in the range of speed 0 is a
bit more unfavourable and there can be a small
stopping jerk in the direction "EMPTY UP".
Additional balance weights are to be removed, if
necessary. An existing massive handwheel
should be exchanged against a plastic
handwheel. Besides the energy saving,
additional reserves are liberated for the speed
regulation.
Prior to the retrofitting (projecting phase) it is
necessary to check whether the motor works
properly in the pole-changing areas in all
operating states. The motor as well as the gear
have to work calm, i.e. without out-of-balance
and clearance. Mechanical weaknesses cannot
be improved by a control but can possibly make
a controlled operation impossible.
Controllerselection:
The rated current of the controller has to be
higher or equal to the rated current of the high-
speed motor winding.
Installation of a encoder:
Provided that no sleeve shaft encoder (e.g.
Ziehl-Abegg -ET3R-1024) can be installed, there
are three possibilities:
1.
Installation of a encoder linked to the motor
shaft by means of a toothed belt.
Documentation: LEM6.06.385 and
LEM6.06.815. "Installation of an encoder
G58H-1024"
2.
In case of gauges provided for the
installation of an analog tacho with Euro-
flange, it is possible to use an incremental
encoder of the same construction
G71-xx/30. The tacho can be supplied with
a shaft diameter (XX) of 07 and 11 mm.
3.
It is also possible to install an incremental
encoder direct to same gears.
Note:
In case of own constructions, you have to pay
attention to the fact that the encoder is mounted
to the motor (gear) without any clearance,
without any axial offset and solid as to the
mechanical link.
Preferably you have to choose an encoder with
a resolution of 1024 increments/track.
ZIEHL-ABEGG can be asked for documentation
concerning the connection possibilities of
encoders of external manufacturers.
