ET500 gate motor problem

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peterhundermark

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Hi,

I've searched the existing threads and could not find help for my problem, so am writing this new post.

I have a dual gate system with two ET500 motors. One recently would not close properly. I checked for rolling resistance manually (with pinion disengaged), but could feel anything or detect a difference between the two. I noticed the battery negative terminal and connector were very corroded. In removing the connector, I managed to break the negative terminal right off the battery. Now with a brand new battery bought today, plus a new connector properly crimped onto the black wire, I tried again.

Now this gate will not operate at all (no difference whether on AC or battery). The system accepts the command from the remote (also from the manual activation button on the PC board with all the normal beeps (different on AC vs DC) and I can hear a relay engage (a soft click), but the motor just does not operate. I can spin the motor manually by turning the exposed wheel at the top, so it is not seized. In this state if I operate the button or remote again I get a continuous beep for as long as the button is pressed. The manual troubleshooting sections says this is case "E: maximum closing collisions detected". I have checked and rechecked the gate for easy running and I have set the load setting to maximum (5 beeps). I have even swapped batteries between the two units just in case. Resetting by powering off AC and opening/closing the manual override several times has not helped.

Can it be that the PC board is faulty? Is there something else I can check or do before I call in the repairman?

Thanks for any help!
 
I've just done a little more sleuthing:
After I reset the system (by opening and closing the manual release) the system gives its normal 1-5 beeps (depending on load setting). If I press the "test" button or the remote button, the relay closes (visible through the clear plastic cover) and the green "st" LED flashes. If I repeat this enough times (5, I think) then I start getting the continuous beep ("maximum collisions detected" error). I have also tried varying the load setting by turning the potentiometer. I have tried to re-program the system by bridging the "prog" jumpers and the system yells at me with a sequence of 10 (I think) beeps but the motor does not operate. I've also checked that the gate limit settings (lo and lc) are working correctly.
No new behaviour, just maybe more information.
 
Can be pc or motor. If you have a voltmeter, you can check the voltage to the motor. Are your motor fuse okay.[on the pc]
 
Can someone assist me with this issue:
10 second video: https://photos.app.goo.gl/PSqYnMeLzo3LMDbo9

The beeping doesn't translate to anything in the manual.
When I connect the 12V battery directly to the 12v motor it goes op / close depending on the polarity.

Rail is clean, track is clean, gears are clean. I'm out of ideas.
 
jeevadotnet said:
Can someone assist me with this issue:
10 second video: https://photos.app.goo.gl/PSqYnMeLzo3LMDbo9

The beeping doesn't translate to anything in the manual.
When I connect the 12V battery directly to the 12v motor it goes op / close depending on the polarity.

Rail is clean, track is clean, gears are clean. I'm out of ideas.
Click to expand...

have you tried to reset limits?
checked and cleaned all fuses?
 
Steamy Tom said:
have you tried to reset limits?
checked and cleaned all fuses?
Click to expand...
Hi. I will have to check this "reset limits" that you're talking about. I had a look at the fuses before and they were all in good condition.
 
jeevadotnet said:
Hi. I will have to check this "reset limits" that you're talking about. I had a look at the fuses before and they were all in good condition.
Click to expand...

Would recommend ohm testing them or cleaning the end caps also, they can look fine but not carry enough current
 
I recently helped somebody out with a similar problem. We discovered that the pc board had quite a bit of corrosion in certain spots. Used liquid flux and a toothbrush to clean it out, and resoldered the affected areas. Worked fine since.
Worth a check before spending too much!
 
Senor said:
I recently helped somebody out with a similar problem. We discovered that the pc board had quite a bit of corrosion in certain spots. Used liquid flux and a toothbrush to clean it out, and resoldered the affected areas. Worked fine since.
Worth a check before spending too much!
Click to expand...
Great will try that. My parents been struggling with this gate for over two years now. I gave up on gate repair companies, because nobody comes out when they said they will.

But got everything in my tinker room to give it a go.
 
Last edited:
If you not hands on, you have two solutions:
1. Replace the entire gate motor
2. Take out pcb board and have it professionally assessed.
 
I'm one hand on, one hand off! 😅

But yeah... Just keen to know if there's a quick fix or if this is something that needs to get assessed by an electronics specialist. I've reached out to an automation professional, so just waiting to hear back from him now...
 
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