16 Mini Maestro User Guide
www.controltechniques.com Issue Number: 5
3.4 Motor connections
Normally the motor should be connected directly to the connector on the installation kit.
When any of the following conditions apply, a choke should be connected to each drive
output as shown in Figure 3-6.
• The motor inductance is less than 1mH
• During emergencies, the user short-circuits the motor connections
• High frequency switching noise is troublesome
• The motor overheats (irrespective of motor inductance)
Figure 3-6 Motor and choke connections
The two cables between the drive and the choke are a source of noise. The cables
should be kept as short as possible (300mm is recommended).
Terminal 3 of the choke should be connected to the + terminal of the motor.
Terminal 5 should be connected to the – terminal on the motor.
Terminal 4 should be connected to the grounding bar (only applies to L12).
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