TI-3100: In-Line Inductive Motor Power Filter Cable (10A max)

OVERVIEW
The purpose of this filter cable is to add induction to servo motors that do not have enough induction to satisfy the AMC analog amplifiers. When a motor does not have enough induction in the windings, noise from the AMC amplifier can become excessive and cause interference in the feedback signals, thereby causing a poor run.  We have documented this filter card clearing up noisy runs from motors with low inductance like certain Yaskawa and Sanyo Denki models, and when powering the drive with higher voltage (240 VAC). Please contact us at support if there are any questions about using this filter card. We may be able to identify if your specific motor model has naturally low inductance. 

This inductive cable should not be used at all times, only when a specific servo motor does not have enough induction to run cleanly. It is possible to have too much induction as well, so do not leave it connected at all times.

SPECIFICATIONS 
Our current AMC amplifier (model B30A40AC) specifies a minimum 600 μH of inductance on the motor windings, measured L-L, and a switching frequency of 20 KHz. Some motor manuals will list the inductive rating of the motor windings, but to actually test them requires a special inductive tester.  

A footnote indicates that the inductance can be less if the bus voltage is "...well below maximum." We often see the case where there is basically no electrical noise problem powering the B30 from 120 VAC, but we have to add inductance to make things work at 240 VAC. At 120 VAC, the DC bus voltage is at or below 50% max DC bus voltage. If possible, first consider lowering your AC power to the amp down to 120 VAC. 

From the AMC manual below, you can see that this BFC10010 filter card is adding 200 μH of inductance. This filter is intended for 10A continuous, and our standard B30A40AC amplifier can potentially output more than that. Do not use the filter card if load testing the motor or if you have a very large motor that may pull high current to get running. 


 
USAGE
As the above image shows, connect the 4 pin male connector of the TI-3100 filter card to the 4 pin receptacle of the TI-3007 motor power output. (This is normally where the motor power is connected directly.) Next, connect the motor windings to the the 4 pin receptacle of the TI-3100. Now power up the amplifier and perform the Debug and Test Run procedures as normal.