Industrial Electronics Repair At ACS Industrial
Reliable Electronic Repairs For Industrial Equipment
Home Page Free Quote Services Pricing Warranty FAQ About Us Contact Us Reviews Line Card top menu right
Visit Our Blog
Dealer and Integrator Inquires Welcome
Free Repair Guide
ACS Industrial Services, Inc., Electronic Equipment & Suppliers  Service & Repair, Hunt Valley, MD
ACS Industrial Services, Inc. is not affiliated with nor an authorized distributor or representative of any manufacturer, brand or product listed. Designated trademarks, brand names and brands appearing herein are the property of their respective owners.

Home > Services > Technical Documents > How To Check A Yaskawa CACR**** Servpack

How To Check A Yaskawa CACR**** Servopack

Page:   < prev   1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17   next > PDF Version

16. Regen Transistor

When the servomotor is turned off, there is still a voltage present across the main bus of the servo. The regen transistor acts as a switch with closes when the servo is turned off to allow this voltage through to the Y3 and Y4 terminals. Here it is dissipated across resistors 1 and 2. When checking the regen transistor, you are making sure it hasn’t been shorted across the emitter and collector.

Regen Transistor

17. Regen Transistor Check

Test Equipment – Digital Multimeter

Step # Multimeter Positive Lead Multimeter Negative Lead Expected Reading (Diode Check)
1 Base Collector Approximately 0.5 Volts.
2 Emitter Collector Approximately 0.4 Volts.
3 Emitter Base Approximately 0.7 Volts.

Page:   < prev   1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17   next > PDF Version

ACS Industrial Services
9 Schilling Road, Suite 210
Hunt Vally, MD 21031
If you need to send your servo pack in for repair, please contact us (see info on right) to get an RMA number, shipping address, and instruction on how to send it to us for a free evaluation. For Servo Pack repair:
call: 800-605-6419
click: ACS Repair Form
footer border

Copyright © 2001-2017 ACS Industrial. All Rights Reserved.
Phone: 800-605-6419, 410-771-1152
Fax: 443-836-9171, 855-252-5363
Hunt Valley, MD 21031
09/26/2017 17:42 -0400 DX v170912.0