Siemens Stober CombiDrive CM400/3 - Manual (Page 6)

English 2. Installation
© STÖBER plc 1998
05.02.01 4
2.2 Mechanical Installation
Figures 1 and 2 show dimensional information for all CombiDrive ® variants.
Note: ‘Case size’ refers to the type of inverter box mounted on the motor. ‘Motor frame’ refers to the motor
frame size only.
Remove or tighten down screw-in lifting eyes prior to using the CombiDrive ® .
Stable foundations or mounting conditions, exact alignment of the motors and a well-balanced transmission
element are essential for quiet, vibration-free running. If necessary, insert shims under the motor's feet to
prevent strain, or balance the whole rotor and transmission element.
Always use the correct tools for fitting and removing transmission elements (coupling halves, pulleys, pinions,
etc.).
The rotors are dynamically balanced with the full featherkey inserted as standard. Since 1991 the type of
balance has been marked on the drive end of the shaft (shaft end face). F denotes balanced with full
featherkey; H denotes balanced with half featherkey. Bear in mind the type of balance used when fitting the
transmission element.
Poor running characteristics can arise in cases where the transmission elements have a length ratio of hub
length to length of shaft end < 0.8 and they run at speeds of > 1500 rpm. In such cases rebalancing may be
necessary, e.g. by reducing the distance by which the featherkey protrudes from the transmission element and
the shaft surface.
WARNING
Take suitable precautions to prevent transmission elements from being touched. If the
CombiDrive
® is started up without a transmission element attached, the featherkey must be
secured in position to prevent it from flying off while the shaft is rotating.
Please check the following prior to commissioning:
•
The rotor turns freely without rubbing.
•
The motor is assembled and aligned properly.
•
The transmission elements are adjusted correctly (e.g. belt tension) and the transmission element is
suitable for the given operating conditions.
•
All electrical connections, mounting screws and connecting elements are tightened and fitted correctly.
•
All protective conductors are installed properly.
•
Any auxiliary equipment that might be fitted (e.g. brakes) is in working order.
•
Protection guards are installed around all moving and live parts.
•
The maximum speed (see rating plate) is not exceeded. Note that the maximum speed is the highest
operating speed permitted for short periods. Remember that motor noise and vibration are worse at this
speed and bearing life is reduced.
The above list is not meant to be exhaustive - additional checks may also be required.