Chapter 2. Troubleshooting
71
Commutation Test Mode
You can operate the APEX615n in commutation test mode to help identify and isolate
problems. When it runs in commutation test mode, the APEX615n does not use any motor
feedback information for commutation. It ignores the resolver or the Hall effect sensor input,
and commutates the motor in an open loop fashion at one revolution per second. The current it
sends to the motor will be proportional to the internal command voltage.
You can use commutation test mode to verify that your APEX615n is commutating properly,
and that the motor phases are wired correctly.
To operate in commutation test mode:
1. Turn off AC power to the APEX615n.
2. Turn DIP Switch#3, Position#3, ON.
3 Turn on AC power to the APEX615n.
4. The APEX615n should begin commutating the motor clockwise at the following
speeds:
• 1 rps (for 2-pole motors)
• 2/3 rps (for 3-pole motors)
5. Depending upon your application, you may need to remove the load from the motor, or
adjust the internal command voltage with the SOFFS command to get adequate motor
current. You may also need to set the servo gains to zero (SGPØ, SGIØ, SGVØ,
SGAFØ & SGVFØ)
Returning the APEX615n
Step 1
Record the serial number and the model number of the defective unit, and secure a purchase
order number to cover repair costs in the event the unit is determined by the manufacturers to
be out of warranty.
Step 2
Before you return the unit, have someone from your organization with a technical
understanding of the APEX615n system and its application include answers to the following
questions:
• What is the extent of the failure/reason for return?
• How long did it operate?
• Did any other items fail at the same time?
• What was happening when the unit failed (e.g., installing the unit, cycling power,
starting other equipment, etc.)?
• How was the product configured (in detail)?
• Which, if any, cables were modified and how?
• With what equipment is the unit interfaced?
• What was the application?
• What was the system environment (temperature, enclosure, spacing, contaminants,
etc.)?
• What upgrades, if any, are required (hardware, software, user guide)?
Step 3
Call for return authorization. Refer to the Technical Assistance phone numbers provided on
the inside front cover of this document. The support personnel will also provide shipping
guidelines.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
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