evening all...
a job im on at the moment involves fire alarm, gas interlock and 2 speed controllers for air intake and extract...
I want the fire alarm to shut down the speed controllers..
The speed controllers have a thermal protection link which when removed means the controllers dont work..
we have a fire alarm interface with com,nc or no..
it is as simple as taking a t&e into the interface connecting brown to com and blue with brown sleeving to nc
then connecting the other end of the t&e's brown to a 230v supply (spur) and the blue sleeved brown to a1 on the coil (neutral from the spur to a2) and then simply extending the link from the controller through the contactor..
so 230 v onto the interface nc >230 down to a1 energise the coil making contactor go NC completing the circuit back through the controller ???
a job im on at the moment involves fire alarm, gas interlock and 2 speed controllers for air intake and extract...
I want the fire alarm to shut down the speed controllers..
The speed controllers have a thermal protection link which when removed means the controllers dont work..
we have a fire alarm interface with com,nc or no..
it is as simple as taking a t&e into the interface connecting brown to com and blue with brown sleeving to nc
then connecting the other end of the t&e's brown to a 230v supply (spur) and the blue sleeved brown to a1 on the coil (neutral from the spur to a2) and then simply extending the link from the controller through the contactor..
so 230 v onto the interface nc >230 down to a1 energise the coil making contactor go NC completing the circuit back through the controller ???