Hi
We are company in egypt, our activity is to build home automation system, to control house devices, and to collect sensors reading, we have an amazing SW but we build that SW upon K8000 Kit, but its in Parallel port and only 4 kits supported unlike k8061 up to 8 Kits, and its USB controlled
Now my question is
Do k8061 is the best choice in such application?
Let this be my first question…
The main difference between the K8000 and the K8061 is that in the K8000 all the digital inputs and outputs are optically isolated. In case of the K8061 those have common GND. The card is optically isolated from the computer. - So there is also isolation between the different K8061 cards connected to the PC.
Some more differences:
K8061:
8 analogue 10 bit resolution inputs: 0…5 or 10VDC
8 analogue 8 bit resolution outputs: 0…5V or 10VDC
K8000:
4 analogue inputs AD1 to AD4, resolution: 256 steps (8 bits)
8 outputs DAC1 to DAC8, resolution: 64 steps (6 bits)
If you do not need the optical isolation between all the digital inputs and outputs then the K8061 will do the job.
Well K8000 was optically isolated, but i used to understand that if we input high voltage signal to input channel this will not damage the PC, but K8000, isn’t this the case in k8061?, i mean what optically isolated mean in K8000 in K8061?
Also, if its the right choice,
Can you help me by telling me what components needed to control power cords, i mean, we need to either allow electricity to reach power cords in wall or not through PC,
So we provide 5V in digital channel, this will turn relay on, so we pass the 220 from the relay to power cord attached in wall, but in case if relay stop or somthing we need another alternative,
I mean if our automation system fail, then user have the option to direct the power to cords manually without pc control
hope anyone understand my point
THANKS alot.
It will not damage the PC. Both cards, K8000 and K8061 are isolated from the PC.
To your other question: Maybe you have to add manually operated switches to turn the relays on in case the PC based control system is not working.
Really thanks,
Now is there is any alternative to the relays, as you know relay are physical contact switch, so it may damage after while, so is there another alternative to pass high voltage without using relays?
Thanks
Maybe you can use a solid state power relay.