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Gates tripped
#1
My gates have been tripping every few days but now they can't be reset, I have a CAME ZA3 control box with an added vehicle loop reset box.

The two sensors work at the back of the gates as waving a hand in front of them causes a light to flash on the PCB board, I have disconnected the wires going to the loop in front of the gates just to check if it's a loop fault but I still can't do a reset, I have had the PCB board off to check for slugs etc at the back, I have changed the motor caps and the three fuses are ok.

I have 240v going into the PCB

Any ideas would be greatly appreciated.

My wiring pic 2

   

   
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#2
I’ve just checked the sensors, one is getting 24v the other 0, I’ve checked the wiring from the PCB board to the sensor for any breaks and it’s ok, however, the powered sensor has power from terminal 10 the dead one from 2 and with a green return, the wiring hasn’t been changed, I’m guessing that the two sensors should have constant power?
If so, does this mean that the PCB board has fails, any help please.
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#3
Hi,

Thank you for your enquiry.

Yes that is correct you should have constant voltage at both of the photocells as one will be the receiver and one be the transmitter if either of these are not powered, the system will not function.

Usually when the gates trip the RCD there is a short between live and earth, this could potentially be a motor issue. I have had the issue before where a motor is causing the same type of fault, I would recommend testing the motor individually in the board first and seeing if you can get the fault to reoccur with one of the motors.

Many thanks

Ben
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#4
Thanks for your reply, I have done a motor test, with the test wire to, if I remember right terminal 3 and both motors work ok, I have 24v on the terminal going to one sensor, the power to sensor 2 is from a different terminal and there's no voltage.
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#5
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