AR absolute battery install with OPX-2A

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AR absolute battery install with OPX-2A

Post by om_tech_support_MD » Fri Mar 29, 2019 10:19 am

To make the AR series absolute, you need to connect the battery to store the position. As an absolute system it will store the electrical home position even after power is removed. With an absolute system, you may not need a home or limit sensor. Without the battery, when you turn on the driver, your current position becomes your new electrical home position. In the case without a battery, you need to add a home sensor to find the home position in the event of power removal.

Just a few notes on connecting the battery to make installation easier. The battery needs 32 hours to fully charge (step 2 of 6). The battery can store the position for approximately 15 days when fully charged.

Reference 1, page 48
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Reference 2 is steps 1-6 on how to set the absolute system with the battery.

Reference 2, page 166
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First complete step 1 by turning off all the power to the driver and connecting the battery. The battery is connected to the CN10 port on the bottom of the driver. Use reference 3 and 4 as a guide to connect the battery.

Reference 3, page 24
system configuration.png
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Reference 4, page 38
battery install.png
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Then, complete step 2 by turning the power back on. Make sure to wait 32 hours for the battery to fully charge before moving on to step 3.

The following instructions are for step 3 of how to set the absolute-position backup system using the OPX-2A digital controller

Using reference 5, change the common parameter "absolute back-up system" from disable to effective using the OPX-2A. You start by hitting the MODE/ESC button 3 times until you get to the PAR mode. When you first plug in the OPX-2 you will be in the monitor mode. The light will be ON for MON. By hitting the MODE/ESC button 3 times the light will come on for PAR.

Hit the SET button

This will take you to a screen to change the ID parameters. The screen will read "ID 0000"

You need to change ID parameter 482 from 0 the factor setting to 1. Hit the up arrow 2 times. The screen will now read "ID 0002". Hit the left arrow one time. Then hit the up arrow 8 times. The parameter will now read "ID 0082". Hit the left arrow one time. Hit the up arrow 4 times. You are now at the correct parameter ID It should read "ID 0482.

Hit the SET button

The screen will now be blinking 0. Hit the up arrow one time. The screen will now be blinking 1.

Hit the set button.

Reference 5, page 128
par example.png
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Step 4. Power cycle the driver for 1 minute.

Step 5 using reference 6, follow the instructions below to clear the absolute position alarm.

Reference 6, page 126
alarm clear.png
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Follow step 6 to change the home position. First move the stepper to the location you want to be the new home position. Do not power cycle the driver until after you use the position preset, P-PRESET, or you will have to start all over. After hitting the absolute position error Reset, jog/move to the location you want to make your home position. When you select P-PRESET, it will change your current location to your electrical home position ( 0 steps). Use reference 7 for the P-PRESET.

Reference 7, page
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Now you can power cycle the driver and your electrical home position will be stored after power is removed.

Some final notes on properly handling the battery

Reference 8, page 16
handling the battery.png
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Should you have any further questions please contact us at [email protected] or call at 1-800-GO VEXTA.

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