Rockwell-automation DC3E Non-Regenerative DC Drive User Guide 1/4 - 2 Manuel d'utilisateur télécharger pdf (Page 30)

22 Installation

Using tachometer feedback improves speed regulation from

approximately 1% of motor base speed to approximately

0.1% of motor base speed. Use tachometers rated from 7

VDC per 1000 RPM to 50 VDC per 1000 RPM. Connect

the tachometer to terminals T1 and T2 of terminal block

502 (TB502). Place switch SW505 in the TACH position.

See Figure 6 for tachometer connections.

IMPORTANT: The TACH trimpot must be adjusted prior

to operating with tachometer feedback. Refer to the

Calibration section (pg 48) for instructions on calibrating

the TACH trimpot.

ATTENTION: Applying the incorrect polarity to the

tachometer can cause an overspeed condition. Make

sure the positive (+) wire is connected to terminal T1

and the negative (-) wire is connect to terminal T2 when

the motor is running in the forward direction. Failure to

observe this precaution could result in bodily injury.



Tachometer feedback

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Rockwell-automation DC3E Non-Regenerative DC Drive User Guide 1/4 - 2 Manuel d'utilisateur Page 30