Parker Hannifin 
Chapter 1  Introduction   21 
Assumptions of Technical Experience 
To install and troubleshoot the ACR90x0 Stand-Alone Controller, you should 
have a fundamental understanding of the following: 
•  Electronic concepts such as voltage, current, and switches. 
•  Mechanical motion control concepts such as inertia, torque, velocity, 
distance, and force. 
 
Technical Support 
For solutions to your questions about implementing the ACR90x0 Stand-
Alone Controllers, refer to the following documents: 
•  ACR9000 Series Hardware Installation Guide (this document) 
•  ACR Command Language Reference (formerly the ACR User’s Guide) 
(Online Help System in the ACR-View software) 
If you cannot find the answer in these documents, contact your local 
Automation Technology Center (ATC) or distributor for assistance. 
If you need to talk to our in-house Application Engineers, please contact us 
at the numbers listed in “Technical Assistance” section on page 3. 
 
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