Maintenance
9.2 Repair
Synchronous/induction motors 1PH813
76 Operating Instructions, 04/2009, 610.48000.22
9.2.5 Replacing the DRIVE-CLiQ interface (encoder module)
Only trained Siemens service engineers are authorized to replace the DRIVE-CLiQ interface
(Sensor Module).
CAUTION
Electrostatic discharge
Electronic modules contain components that can be destroyed by electrostatic discharge.
These modules can be easily destroyed if they are not handled properly.
To protect your equipment against damage, follow the instructions given in the chapter ESD
Guidelines.
WARNING
Motor-specific Sensor Module
The Sensor Module contains motor/sensor-specific data and an electronic nameplate.
If you operate a different Sensor Module on the motor, this can result in serious injury or
death, or cause considerable material damage.
Only operate the Sensor Module on the original motor. Do not install the Sensor Module on
other motors. Do not replace the Sensor Module with a Sensor Module from a different
motor.
9.2.6 Tightening torque for screwed connections
For screwed connections with metal contact surfaces (e.g. bearing end shields, active
bearing components, or terminal box parts screwed onto the stator housing), the following
tightening torques apply (depending on the thread size) with a tolerance of ±10 %, property
class 8.8 and 8 or higher, to DIN ISO 898.
Table 9- 3 Tightening torque for screwed connections
Thread diameter M4 M5 M6 M8 M10 M12 M16
Tightening torque [Nm] 3 5 9 24 42 70 165
Bolt locking devices
Nuts or bolts that are mounted together with locking, resilient and/or force-distributing
elements (e.g. safety plates, spring-lock washers, etc.) must be refitted together with
identical, fully functional elements.
Always renew keyed elements.
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