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Epilog Rotary Attachment Details

We make every effort to ensure the accuracy of this information but can’t guarantee it. Verify the data yourself.

Epilog Rotary Motor Part Number

The Epilog rim drive rotary motor has been identified as a Vexta PH-265M-33-C9 2-phase 6 wire stepper motor.
The manufacturer of this motor, Oriental Motor, has stated:

The PH265M-33-C9 is actually a proprietary custom motor that we designed and built for a machine manufacturer. We do not have any standard products that would be a direct replacement. For direct replacements, please contact the maker of your machine. Please see below for our closest standard motor and its spec link. You will have to compare your motor and our suggested motor to determine if it will work.

Possible Replacement Motor

Here is the motor they advised as the closest standard motor, Click the part number for more info:

PK264M-01A

About 6 Wire 2 Phase Stepper Motors

A 6 wire unipolar motor has 2 pairs of two coils. The two coils in a pair are internally wired in series and have 3 external wire connections: one for the end of one coil, a second for the opposite end of the other coil, and a third for the middle (common) connection. Wires for one pair of coils is usually black, yellow (common) and green, the other coil typically uses red, white (common) and blue.

Epilog Rotary Motor Connector Pinout

A picture of Epilog’s rotary connector is shown. It is a Molex 8 pin connector with 7 of the 8 connections used to couple into a 6 wire unipolar stepper. One pin is unused.

Connector Pinout

The color codes are standard 6 pin Color Code 1

PinColorDescription
1BlueC
2BlackD
3Gray (jumps to Pin 7) Device Detection
4White & YellowWhite: A/C Common, Yellow B/D Common
5GreenB
6RedA
7Gray (jumps to Pin 3)Device Detection
8N/AN/A

Troubleshooting Connections

Your colors may differ or the same colors might be used with different internal connections. Quickest way to find the right connection for your stepper is to hook it up and try it. The rotor should step the same direction each time the voltage changes, resulting in smooth rotation. If any of the motor wires are hooked up wrong, sequential voltage changes will sometimes cause the rotor to reverse direction and you’ll see it doesn’t turn smoothly.

No harm will be done to the motor or circuitry, but you’ll need to switch wires until the rotor turns smoothly in the right direction. Call the 4 coil wires M, N, O and P (you can pick them randomly, just stay consistent) and jumper them to the connector pins 1, 2, 5 and 6 . If the rotor doesn’t turn smoothly (one direction or the other), power down and switch the last pair (M, N, P, O), then try again.

Still not turning smoothly? Power down and switch the middle pair (M, P, N, O). When you get an arrangement that runs smoothly, note the direction the shaft is rotating. If the shaft is running the direction you want, you are done, but if it is running backwards, power down and switch ALL FOUR connections (ABCD -> DCBA).

We make every effort to ensure the accuracy of this information but can’t guarantee it. Verify the data yourself.

Tech Bravo

My name is Brian and I am a full time geek! Before being pulled in to a real estate firm as their digital marketing guru I was Operations Manager/Senior Network Engineer/Lead Color Digital Imaging Technician for a medium sized Copier/Printer/IT firm. I have been taking things apart since i was old enough to handle a screwdriver and, over the years, have figured out how to put stuff back together. My toys growing up were oscilloscopes, Z80 based microprocessors, tools, and the like and I am heavily addicted to all things technical. I look forward to bringing hi-tech to you! Feel free to contact me if you wish.

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