● Test the rotor to see if it is running smoothly. The permissible rotor deviation on the
commutator is 0.2 mm.
● Mount the entire speed-sensor stator.
9.2.6.3 Speed sensor for construction type IM B5
Removal
The speed encoder is designed for mounting, corresponding to type of construction IM B5. It
is driven through a jaw clutch (Rotex).
If a different design is used, the installation and operating instructions of the speed encoder
manufacturer apply.
Note
Damage to the speed encoder
The speed encoder can be damaged when removing the machine. Remove the speed encoder
before removing the motor.
1. Completely unscrew the speed encoder and move it away, axially. This separates the
coupling halves axially.
2. The shaft journals or half-couplings mounted on or in the machine shaft extension must be
removed and replaced if they are damaged.
– When replacing damaged parts, such as the tolerance ring, please ensure they are
correctly arranged.
– Use LOCTITE that can be removed and suitable tools to assemble parts.
3. Release or tighten the screwed-in coupling part at the hexagon socket head screw (Allen
screw, 8mm)
Table 9-6 Recommended torques for tightening the coupling
Thread size Torque [Nm]
M16 20
M20 30
M24 40
Installation
Firmly reattach the speed encoder that was removed. If a different design is used, the
installation and operating instructions of the speed encoder manufacturer apply.
The legend numbers in the following illustration are explained in chapter Spare parts / Speed
encoder (Page 112).
Maintenance
9.2 Repair
SIMOTICS DC 1GG5
100 Operating Instructions 02/2016
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