One or three roads:
1, uninterruptible power supply (battery directly supplies power to ECM)
2. Switch the power supply through the key switch (whether to supply power to ECM is controlled by the key switch).
3. Ground wire from ECM to positive electrode * * * negative electrode
Secondly, uninterruptible power supply plays an important role in data storage of electronic countermeasures.
1, the uninterruptible power supply can only be disconnected after the ECM is powered off for 30 seconds, because the ECM is storing data at this time. If the uninterruptible power supply is disconnected at this time, the generator set cannot be started again, resulting in maintenance and affecting normal operation.
2. The switch has three positions.
Switch/Run (Ignition Preparation)/Start (Landing)