How to Connect a Motor to MK111 Timer Relay Terminals J2?

Click For Summary
SUMMARY

The discussion focuses on connecting a motor to the MK111 timer relay, specifically addressing the J2 terminals labeled NO, NC, and COM. The user aims to power an electric motor for 2 seconds, followed by a 5-second pause, utilizing the relay's functionality. The recommended wiring involves connecting the +12V from the battery to the COM terminal, the motor to the NO terminal, and the other motor terminal to -12V. This configuration ensures the motor activates when the relay is energized, with an alternative setup using the NC terminal for reverse operation.

PREREQUISITES
  • Understanding of MK111 timer relay functionality
  • Basic knowledge of relay wiring and operation
  • Familiarity with electric motor specifications, particularly 12V ratings
  • Ability to interpret circuit diagrams
NEXT STEPS
  • Research wiring configurations for relay connections in motor control
  • Learn about relay types and their applications in automation
  • Explore troubleshooting techniques for electric motor circuits
  • Study the MK111 timer relay manual for advanced features and settings
USEFUL FOR

Electronics enthusiasts, hobbyists working on robotics projects, and university students involved in engineering or automation studies will benefit from this discussion.

rc flyer uk
Messages
11
Reaction score
0
I hae built a MK111 variable interval timer http://www.maplin.co.uk/Module.aspx?ModuleNo=25224&criteria=TIMER%20KITS&doy=6m1"

and intend to use it for a free-flight glider which is a university project!

I wish for the timer to power an electric motor for 2sec and then pause for a desired time peroid such as 5sec before having another 2 sec of power to the motor! Which is exactley what the circuit is for!

My question is regarding the conections on J2 which are NO, NC and COM these are from the relay.

I can curently get the motor to run through the circuit but cannont get it to interrupt the motor as required!

How should the motor be wired to the conections on J2? ie the motor and the battery??

The instructions/ circuit diagram can be found here:

http://www.vellemanusa.com/downloads/0/manual_mk111.pdf"

any help would be much aprciated!
 
Last edited by a moderator:
Engineering news on Phys.org
I'm not for sure exactly how your relay is connected on the PCB, but I'm assuming your motor is rated for 12V (check this!). You would probably want to connect +12V (from the battery) to the relay's COM (common) and then hook your motor up to the NO (Normally Open) terminal. Your other motor terminal would then connect to your -12V (from the battery). This way the motor would turn on when the relay was energized. You could reverse this operation by hooking your motor between the NC (Normally Closed) and -12V.