[This question has been completely re-written since originally asked.]
shares its power supply with a motor connected to CN1 NC relay contact. On power-on the motor runs for about 0.5 s until the circuit energises the relay and disconnects the motor. How can I prevent this brief motor operation on power-on?
DC motor specification:
12 V, 200 mA but under load it will draw up to 1 A.