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A lot will depend on the gate controller rather than the intercom. They usually have various logic modes that are set according to how you need to operate it - automatic, semi-automatic, manual, dead man operation. All work differently according to whether the gate is closed, opening, open, closing. For instance:Hello, can I just please ask you guys a question…
I’m in the middle of getting sliding gates made, and have an electric motor to open/close it. We have also purchased the hikvision IP modular intercom system, I believe I can connect the hikvision intercom to my electric gate motor using hikvision NO1 and COM. This will open the gates using the hikvision app/ screen. However my concern is will it be able to close the gates? I’ll be turning the auto close off on the gates as we wish to set a timer which I believe we can on iVMS (open at say, 8am and close at 4pm), so ideally we would like to manually open and close the gate.
Will we have a button to ‘close’ gates on the hikvision intercom screen? And should this close the gates or do we have to add some sort of relay to power the close?
I thought I had it all sorted until now!!
Thanks in advance guys
Automatic - Shorting a common normally open pair opens the gate, after a pause time it closes automatically. Another pulse while closing reverses direction (opens again). Holding the connection shorted while open will keep the gate open.
Semi Automatic - Shorting the pair will - open if closed, close if open. If shorted while opening it would stop immediately and the next operation would close. If shorted while closing it would stop and the next operation would open. This is probably what you'd want as it could be opened and closed from one pair of wires.
Dead man operation - short the connection (hold a button) to keep the gate opening - releasing the button, it would stop. A separate pair would be used to do the same for close.
It's been an age since I've installed gates but I used to do a lot of gates, barriers etc and the above information regarding logic is based on FAAC control boards, though it would be similar for other equipment.
I've not used the Hikvision intercom. If it provides a volt free changeover or common/normally open output nothing else would be needed. However if it supplies a voltage (intended for a maglock or electric strike, you'd need a relay with a coil matching that output in order to provider a volt free contact to the gate controller terminals.