Xephias
Newbie level 2
Hi, (sorry if this has been covered - i did search)
I'm trying to build a motion failure alarm.
There are quite a few on the market, but mostly for rotational motion, and large applications. This is a small application and the movment is linear - back and forth. My initial thoughts are to use a photoelectric motion sensor, and a control unit which will sound an alarm if motion isn't detected after 5 seconds or so.
I've got various options. But i'm currently considering an SSR timer relay - which does all the processing for me. It switches if no pulse is detected for a certain time.
Here's my current question. The input for the relay is based on a switch - it detects a pulse if the 2 input contacts are connected. Most of the motion sensors that I can find send a voltage to an output. I'd rather not use another relay. There are some with 'open collector' outputs, which (if i'm correct) connect the collector to ground when tripped.
Can I connect one of the relay terminals to ground and the other to the collector output of this sensor?
I'm trying to build a motion failure alarm.
There are quite a few on the market, but mostly for rotational motion, and large applications. This is a small application and the movment is linear - back and forth. My initial thoughts are to use a photoelectric motion sensor, and a control unit which will sound an alarm if motion isn't detected after 5 seconds or so.
I've got various options. But i'm currently considering an SSR timer relay - which does all the processing for me. It switches if no pulse is detected for a certain time.
Here's my current question. The input for the relay is based on a switch - it detects a pulse if the 2 input contacts are connected. Most of the motion sensors that I can find send a voltage to an output. I'd rather not use another relay. There are some with 'open collector' outputs, which (if i'm correct) connect the collector to ground when tripped.
Can I connect one of the relay terminals to ground and the other to the collector output of this sensor?