30
Operating Instructions – AC Motors DR / DV / DT / DTE / DVE / Asynchrounos Servo Motors CT / CV
6
Altering the blocking direction on motors with a backstop
Startup
Do not start up the motor in the blocking direction (note the phase angle when
connecting). Note the direction of rotation of the output shaft and the number of stages
when mounting the motor on a gear unit. The backstop can be operated once in the
blocking direction at half the motor voltage for checking purposes.
1. Isolate the motor from the supply, safeguarding it against unintentional power-
up.
2. Remove fan guard [1] and fan [2], unscrew hexagon socket head cap screws [3]
3. Remove the V-ring [4] and sealing flange with felt ring [5]. (Collect the grease for
subsequent use.)
4. Remove the circlip [6] (not for DT71/80); for DV132M-160M, also remove the
equalizing rings [10].
5. Pull the carrier [8] and wedge element train [9] completely off the threaded holes [7],
turn them by 180° and press them back on.
6. Refill the grease.
7. Important: Do not exert pressure on or hit the wedge element train – danger of
damaging the material!
8. During the press-in operation – shortly before the wedge element penetrates the
locking collar – slowly turn the rotor shaft by hand in the direction of rotation. This
allows the wedge element to slide into the locking collar more easily.
9. Install the remaining parts of the backstop by following steps 4. to 2. in reverse order.
Note the installation dimension "x" for the V-ring [4].
0
0
I