WHAT IS GENERATOR AUTO START?

A generator auto start module starts the engine by driving relays connected to the start-stop (or ON-OFF) key-switch of the generator. It additionally provides safeguards to protect the engine and generator. A user-friendly auto-start module offers a display and a suitable number of LED indicators.

 

Here is an example of a cost-effective generator auto start module

 

 99€ Cost-Effective Generator Auto Start Module

This tutorial is about automatic generator start/stop and transfer switch (ats), automatic generator start and stop wiring diagram, portable generator auto start kit, 2 wire auto start generator, generator self start kit, low battery autostart generator, and automatic start generator for home.

 


Can portable generator start automatically?

No, this is not possible especially if it is about a gasoline engine. If your portable generator is diesel-driven and features an electric start, you can connect two relays as explained in the wiring diagram.

 

You can use a portable generator to power your house during power outages by following our instructions.

 


How do I remote start my generator?

If it is about a diesel engine it is really easy. If it's about a gasoline engine you may require a mechanism to activate the choke when the engine is cold.  The Be1 features suitable outputs for this task. If your engine is based only on a key start, you may connect pilot relays to drive the fuel solenoid and start the solenoid. When the engine is running you may energize a relay connection as a way to terminate the crank. You can simply use a Be24 auto-start module combined key to start and auto start module.

BE24 AUTOSTART VIDEO TUTORIAL

 


How does electric start work on a generator?

The principle is similar to your car. A fuel solenoid is energized to allow the fuel to flow. At the same time, the crank motor starts the engine. You release the key when the engine is running. If it is about an auto start module, a special circuit described in this page will automatically disconnect the starter motor.

 


Do electric start generators have a battery?

Yes, this is mandatory. You are required to carry out the best maintenance you can. This will help you avoid frustrating experiences during a power outage.


LOW BATTERY AUTO START RELAY

WHEN YOUR PURPOSE IS KEEPING YOUR BATTERIES FULLY CHARGED YOU REQUIRE A BE48 LOW BATTERY GENERATOR AUTO START MONITORING RELAY.

You can purchase the relay and connect it to your Auto Start Module. If your generator does not feature an auto start module, you can use the embedded relays included in the Be148. You will build a cost-effective, reliable, low battery auto start module

BATTERY MONITORING WITH AUTO START


ALL ABOUT NORMALLY CLOSED OR NORMALLY OPEN CONTACTS IN DRIVING YOUR GENERATOR AUTO START MODULE INPUT

A normally open switch (N.O.) is a switch that is in its open position when you do need to start the generator. When you close the switch, the auto start controller will instruct the engine to start (immediately or after a delay if allowed by the auto start controller). When you open the contact the engine will stop (immediately or after a delay if allowed by the auto start controller).

THIS IS THE NOTATION OF A N.O. SWITCH


A normally closed switch (N.C.) is a switch that is in its closed position when you do need to start the generator. When you open the switch, the auto start controller will instruct the engine to start (immediately or after a delay if allowed by the auto start controller). When you close the contact the engine will stop (immediately or after a delay if allowed by the auto start controller).

THIS IS THE NOTATION OF A N.C. SWITCH

WHY AND WHEN TO USE N.C. OR N.O. CONTACTS

This is only about safety. In other words, you have to consider what would happen in the worst scenario: a broken switch, open connection, or short circuit. You have to consider all issues. If you use a normally open switch and the cable is disconnected, you will be not able to start the engine. This could be a serious issue in the case of fire protection systems. On the other hand, in the case of open circuits, you will not be able to stop the generator. So final decision can be made after analyzing all aspects. For normal operations, the N.O. option is the most common choice. Top-level Bernini design generator auto start controllers feature programmable options N.O./N.C. and generator turn-on/turn-off timings up to 24 hours.

 

UNDERSTANDING CRANK TERMINATION

'Crank Termination' is an adjustable engine speed setting or condition, if you will,  that shuts down the starter motor when the engine is firing. The cranking must be terminated correctly. This is the most complex function carried out by a generator auto start controller. The output of the generator auto start controller drives a pilot relay. The pilot relay will de-energize in order to stop the current flow to the starter motor circuit when the engine crank termination setting is reached. The starter motor pinion gear will then disengage from the engine flywheel ring gear. The theory is not so complex. Unfortunately, there are many ‘volatile’ parameters involved when you crank an engine: status of the battery, aging of the starter motor, ambient temperature, difficulties in starting the engine due to mechanical problems, unstable connections, and so on. When it is about the manual switch start, you will find soon or later the problem and finally, you will start the engine. The hard job of the generator auto start controller is to analyze all sources of information in a way to start the engine automatically. As a matter of fact, it monitors the charger alternator voltage (V), the charger alternator frequency (Hz), the generator alternator voltage (V), the generator alternator frequency (Hz), and the rotational speed of the engine (RPM). For each parameter, the generator auto start controller features programmable settings that include the option 'OFF' (in other words the controller does not take into consideration a parameter set to ‘OFF).

It is obvious that the most accurate rotational speed (RPM) information is provided by a pickup. Unfortunately, not all engines have this device. It is about a permanent magnet generator with a single pole. Wire coils are wound around a permanent magnet pole piece. When the teeth of the flywheel ring gear move through the magnetic lines of force that are around the magnetic pickup pole an AC voltage is generated. Engine speed is measured by the frequency of the signal generated by the pickup. You can program the number of teeth of the ring gear in a way to get the correct rotational speed). When the generator auto start controller starts the engine, a software routine continuously compares in real-time the settings with the parameters (voltages, frequencies, etc). Once at least two signals are recognized as ‘true’, the controller terminates the crank. The following diagram helps to understand how 'crank termination' works.


BERNINI DESIGN SRL SALE TERMS

Industrial Park

46035 OSTIGLIA ITALY

BERNINI@BERNINI-DESIGN.COM

SUPPORT

0039 335 70 77 148