Hikvision DS-KD8003 PoE

Dacmoreira

Dacmoreira

n3wb
Aug 13, 2024
3
0
Portugal
I have a DS-KD8003, and apparently everything is working fine on the inside display and camera.
But when I press the button for the electric lock, the gate opens but the external device turns off, and restarts.

What could it be?
 
Does the voltage being supplied to the "external device" drop significantly when the button is pressed?
Is the electric lock the correct one for the applied voltage?
Is there a diode clamp installed across the coil of the electric lock?
 
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TonyR said:
Does the voltage being supplied to the "external device" drop significantly when the button is pressed?
Is the electric lock the correct one for the applied voltage?
Is there a diode clamp installed across the coil of the electric lock?
Click to expand...

Question 1: I have one Ubiquiti PoE+
Question 2: i think so.
Question 3: what it is?
 
Dacmoreira said:
Question 1: I have one Ubiquiti PoE+
Question 2: i think so.
Question 3: what it is?
Click to expand...
1. I ask because it sounds like the voltage dips enough when the electric lock is energized to cause a restart of the other device.
2. Just to be sure I would check ratings for the device from a label or part number.
3. When an energized coil is de-energized it can generate a big and backward voltage spike that can damage a semiconductor output. The diode is placed across the coil with its cathode (the white band) to the positive side of the DC coil to clamp that voltage and protect the output driver. It can also be incorporated inside the device where it's not visible.

It's likely that the manufacturer took this into consideration and the output is protected. It may also be a "dry" relay closure output which can negate the need for a diode clamp. I cannot say for sure, not having the installation instructions / user manual.

Does the manual have info regarding the electric strike, such as its operating voltage and if it requires an external 12VDC or 24VAC power supply to operate the lock / strike?
 
TonyR said:
1. I ask because it sounds like the voltage dips enough when the electric lock is energized to cause a restart of the other device.
2. Just to be sure I would check ratings for the device from a label or part number.
3. When an energized coil is de-energized it can generate a big and backward voltage spike that can damage a semiconductor output. The diode is placed across the coil with its cathode (the white band) to the positive side of the DC coil to clamp that voltage and protect the output driver. It can also be incorporated inside the device where it's not visible.

It's likely that the manufacturer took this into consideration and the output is protected. It may also be a "dry" relay closure output which can negate the need for a diode clamp. I cannot say for sure, not having the installation instructions / user manual.

Does the manual have info regarding the electric strike, such as its operating voltage and if it requires an external 12VDC or 24VAC power supply to operate the lock / strike?
Click to expand...


This is the electronic lock!
 
Your PS output from 8003 is not optimal for classic e-locks, it has to be low current DC elock, otherwise lock eats too much power and restarts device. Ive seen that with at least 20 or 30 customer cases. Either run external PS for lock or go with low current dc lock
 
Sorry to hijack this thread but just preparing the wiring before I buy the intercoms ! Door supplier says strike is 1w/24dc - what does that mean ? Should I run a power supply (I assume will have to set up low voltage power )to the electric strike and a cat cable from the strike to the doorbell? Or have I got it all muddled up ?
 
you need 24 volts as the strike is

PS - to 1 side of strike
PS + to COM

NO/NC to other side of strike.

Depends if its normal open or normal close you will either use NO or NC
 
Thank you . What type of wire? I have so many spare 1.5mm twin flex and earth cable - can I use that ?
 
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