Mounting the speed encoder
1. Removing the coupling at the DE.
2. Screw a suitable lever into the tapped hole on the face of the shaft extension. You can use
the centering hole at the end of the shaft for this purpose.
3. Rotate the rotor using the lever. The required torque is approximately 200 Nm.
Measure the radial runout of the shaft journal. The radial runout must be less than 0.1 mm
when the rotor turns.
4. If the height of the shaft journal is more than 0.1 mm, dismantle the contact guard with the
outer bearing cover. Adjust the shaft journal using the three grub screws in such a way that
the height of the shaft journal is less than 0.1 mm when rotating the rotor. Install the outer
bearing cover with contact guard.
5. Mount the new speed encoder.
6. Mount the torque arm of the speed encoder.
7. Insert the connector into the socket.
8. Press the cable into the holder provided for it.
9. Screw on the speed encoder cover. Take care that you do not catch the cable as you screw
it in.
Note
Identifying the position of the rotor
After replacing the speed encoder, perform a rotor position identification routine (automatic
encoder adjustment) using the converter Motor Module.
Maintenance
9.2 Corrective Maintenance
SIMOTICS HT Series HT-direct 1FW4...1......A
Operating Instructions 11/2018
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